id
int32 0
32.5k
| code
stringlengths 95
8.4k
| label
stringclasses 65
values |
|---|---|---|
13,100 |
int main()
{
int n,m;
double a,b,c,x,y,p,q,disc;
scanf("%d",&n);
for(m=1;m<=n;m++)
{
scanf("%lf %lf %lf",&a,&b,&c);
disc=b*b-4*a*c;
p=-b;
p=p/2;
p=p/a;
if (disc>0)
{
q=sqrt(disc);
q=q/2.0;
q=q/a;
x=p+q;y=p-q;
printf("x1=%.5f;x2=%.5f",x,y);
printf("\n");
}
else if (disc==0)
{
printf("x1=x2=%.5f",p);
printf("\n");
}
else
{
disc=-disc;
q=sqrt(disc);
q=q/2.0;
q=q/a;
if(p==-0) p=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",p,q,p,q);
printf("\n");
}
}
return 0;
}
|
27
|
13,101 |
int main()
{
int n,k;
float a,b,c;
double x1,x2,t,i;
cin>>n;
for(k=0;k<n;k=k+1)//circulating
{
cin>>a>>b>>c;
t=b*b-4*a*c;
if(t==0)
{
x1=(-b + sqrt(t))/(2*a);
x2=(-b - sqrt(t))/(2*a);
cout<<fixed<<setprecision(5)<<"x1"<<"="<<"x2"<<"="<<fixed<<setprecision(5)<<x1<<endl;
}
if(t>0)
{
x1=(-b + sqrt(t))/(2*a);
x2=(-b - sqrt(t))/(2*a);
cout<<"x1"<<"="<<fixed<<setprecision(5)<<x1<<";"<<"x2"<<"="<<fixed<<setprecision(5)<<x2<<endl;
}
if(t<0)
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
i=sqrt(-t)/(2*a);
if (x1>=-0.000001 && x1<=0.0000001) x1=x2=0.00;//if x is a number which approximately approach 0(set the range of its presicion!), we can output 0 instead of x.
cout<<"x1"<<"="<<fixed<<setprecision(5)<<x1<<"+"<<i<<"i"<<";"<<"x2"<<"="<<fixed<<setprecision(5)<<x2<<"-"<<i<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,102 |
main (){
int n,i;
double delta,p,q,x1,x2;
float a[100],b[100],c[100];
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%f%f%f",&a[i],&b[i],&c[i]);
delta=b[i]*b[i]-4*a[i]*c[i];
p=-(b[i]/(2*a[i]));
q=sqrt(fabs(delta))/(2*a[i]);
if(delta==0)
{
printf("x1=x2=%.5f\n",p);}
else if(delta>0)
{
x1=p+q;
x2=p-q;
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{
printf("x1=%.5f+%.5fi;",p,q);
printf("x2=%.5f-%.5fi\n",p,q);
}
}
return 0;
}
|
27
|
13,103 |
int main()
{
float a,b,c,d,p,q;
double x1,x2;
int i,n,k;
scanf("%d",&n);
for (i=1;i<=n;++i)
{
scanf("%f%f%f",&a,&b,&c);
d=sqrt(b*b-4*a*c);
if(d>0)
{
x1 = (-b + d)/(2*a);
x2 = (-b - d)/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(d==0)
{
x1 = (-b + d)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
d=sqrt(4*a*c-b*b);
if(b==0)
{
x1=b/(2*a);
x2=b/(2*a);
p=d/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,p,x2,p);
}
else
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
p=d/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,p,x2,p);
}
}
}
scanf("%d",&k);
return(0);
}
|
27
|
13,104 |
int main()
{
int n,i;
double a,b,c,x1,x2,d,r;
cin >>n;
for (i=1;i<=n;i++)
{
cin >>a>>b>>c;
d=b*b-4*a*c;
if (d>0)
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
cout <<"x1=";
printf("%.5f",x1);
cout <<";x2=";
printf("%.5f",x2);
cout <<endl;
}
else if (d<0)
{
r=-b/(2*a);
d=abs(d);
x1=sqrt(d)/(2*a);
cout <<"x1=";
if (r==0)
cout <<"0.00000";
else
printf("%.5f",r);
cout <<"+";
printf("%.5f",x1);
cout <<"i;x2=";
if (r==0)
cout <<"0.00000";
else
printf("%.5f",r);
cout <<"-";
printf("%.5f",x1);
cout <<"i"<<endl;
}
else
{
x1=-b/(2*a);
cout <<"x1=x2=";
printf("%.5f",x1);
cout <<endl;
}
}
return 0;
}
|
27
|
13,105 |
int main(int argc, char* argv[])
{
int n,j;
char i='i';
scanf("%d",&n);
for(j=0;j<n;j++){
float a,b,c;
scanf("%f%f%f",&a,&b,&c);
double e,f,m,n;
if((b*b-4*a*c)>0){
e=((-b)+sqrt(b*b-4*a*c))/(2*a);
f=((-b)-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",e,f);
}
else if((b*b-4*a*c)==0){
e=f=(-b)/(2*a);
printf("x1=x2=%.5f\n",e);
}
else{
m=(-b)/(2*a);
n=sqrt(4*a*c-b*b)/(2*a);
if(b==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",n,n);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",m,n,m,n);
}
}
}
|
27
|
13,106 |
int main()
{
int n ;
cin >> n ;
double a[101] , b[101] , c[101] , d[101] ;
for (int i = 1 ; i <= n ; i++)
{
cin >> a[i] >> b[i] >> c[i] ;
d[i] = b[i] * b[i] - 4 * a[i] * c[i];
}
for (int j = 1 ; j <= n ; j++)
{
if(b[j]==0)
{
if (d[j]==0)
cout << fixed << setprecision(5) << "x1=x2=" << b[j]/(2.0 * a[j]) << endl ;
else
{
if(d[j]>0)
cout << fixed << setprecision(5) << "x1=" << (-b[j] + sqrt(d[j]))/(2.0 * a[j]) << ";x2=" << (-b[j] - sqrt(d[j]))/(2.0 * a[j]) <<endl;
else
cout << fixed << setprecision(5) << "x1=" << b[j]/(2.0 * a[j]) << "+" << sqrt(-d[j])/(2.0 * a[j]) << "i;x2=" << b[j]/(2.0 * a[j]) << "-" << sqrt(-d[j])/(2.0 * a[j]) << "i" <<endl ;
}
}
else
{
if (d[j]==0)
cout << fixed << setprecision(5) << "x1=x2=" << -b[j]/(2.0 * a[j]) << endl ;
else
{
if(d[j]>0)
cout << fixed << setprecision(5) << "x1=" << (-b[j] + sqrt(d[j]))/(2.0 * a[j]) << ";x2=" << (-b[j] - sqrt(d[j]))/(2.0 * a[j]) <<endl;
else
cout << fixed << setprecision(5) << "x1=" << -b[j]/(2.0 * a[j]) << "+" << sqrt(-d[j])/(2.0 * a[j]) << "i;x2=" << -b[j]/(2.0 * a[j]) << "-" << sqrt(-d[j])/(2.0 * a[j]) << "i" <<endl ;
}
}
}
return 0;
}
|
27
|
13,107 |
int main()
{
int n;
cin>>n;
double a,b,c;
for(int i=1;i<=n;i++)
{
cin>>a>>b>>c;
double d=b*b-4*a*c;
if(d>0)
{
double x1=(-b + sqrt(d))/(2*a);
double x2=(-b - sqrt(d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
if(d==0)
{
double x=(-b)/(2*a);
cout<<"x1=x2="<<fixed<<setprecision(5)<<x<<endl;
}
if(d<0)
{
double m;
if(b==0)m=0;
if(b!=0)m=(-b)/(2*a);
double n=(sqrt(-d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<m<<"+"<<n<<"i;x2="<<m<<"-"<<n<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,108 |
//****************************************
//*?? ????????? **
//*?????? 1100013020 **
//*???2011.9.23 **
//****************************************
int main()
{
int i,n,j;
double a[100],b[100],c[100],x1[100],x2[100],k[100],l[100],p[100]; //???????????
i=1;
j=1;
cin>>n;
for (;i<=n;)
{
cin>>a[i]>>b[i]>>c[i];
if (b[i]*b[i]-4*a[i]*c[i]>=0)
{
x1[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if (x1[i]<0 || x1[i]>0)
x1[i]=x1[i];
else
x1[i]=0.00000;
if (x2[i]<0 || x2[i]>0)
x2[i]=x2[i];
else
x2[i]=0.00000;
}
else
{
k[i]=-b[i]/(2*a[i]);
l[i]=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
p[i]=i;
if (k[i]<0 || k[i]>0)
k[i]=k[i];
else
k[i]=0.00000;
if (l[i]<0 || l[i]>0)
l[i]=l[i];
else
l[i]=0.00000;
}
i=i+1;
}
i=1;
for (;i<=n;)
{
if (i<p[i] || i>p[i])
{
if (x1[i]<x2[i]||x1[i]>x2[i])
{
cout<<fixed<<setprecision(5)<<"x1="<<x1[i]<<";x2="<<x2[i]<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1[i]<<endl;
}
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<k[i]<<"+"<<l[i]<<"i"<<";x2="<<k[i]<<"-"<<l[i]<<"i"<<endl;
j=j+1;
}
i=i+1;
}
return 0;
}
|
27
|
13,109 |
int main()
{
int n,k;
float a,b,c;
double x1,x2,t,Re,Im;
cin >> n;
for (k = 1; k <= n; k++)
{
cin >> a >> b >> c;
t = b * b - 4 * a * c;
Re = -b / (2 * a);
Im = sqrt(fabs(t)) / (2 * a);
if (t > 0)
{
x1 = Re + Im;
x2 = Re - Im;
if (fabs(x1) <= 1e-5)
{
x1 = 0;
}
else if (fabs(x2) <= 1e-5)
{
x2 = 0;
}
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else if (t == 0)
{
if (fabs(Re) <= 1e-5)
{
x1 = 0;
}
else
{
x1 = Re;
}
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
if (fabs(Re) <= 1e-5)
{
Re = 0;
}
cout << fixed << setprecision(5) << "x1=" << Re << "+" << Im << "i;x2=" << Re << "-" << Im << "i" << endl;
}
}
return 0;
}
|
27
|
13,110 |
void main()
{
int n,d;
double a,b,c,p,x1,x2,o,q;
scanf("%d",&n);
for(d=0;d<n;d++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=b*b-4*a*c;
o=sqrt(-p)/(2*a);
q=-b/(2*a);
if(p<-ESSP)
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",q,o,q,-o);
else if(p>ESSP)
{
x1=(-b+sqrt(p))/(2*a);
x2=(-b-sqrt(p))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
}
|
27
|
13,111 |
void main ()
{
int n,i;
double a,b,c,x1,x2,p=0.000001;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if (b*b-4*a*c<-p)
{
x1=-b/(2*a);x2=sqrt(-b*b+4*a*c)/(2*a);
if (x1>-p&&x1<p) x1=0;
if (x2>-p&&x2<p) x2=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
else
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if (x1>-p&&x1<p) x1=0;
if (x2>-p&&x2<p) x2=0;
if (b*b-4*a*c<p&&b*b-4*a*c>-p)
printf("x1=x2=%.5f\n",x1);
else
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
}
}
|
27
|
13,112 |
int main()
{
float a,b,c,n,i,j,x,y;
scanf("%f",&n);
for(i=1;i<=n;i=i+1)
{
scanf("%f %f %f",&a,&b,&c);
j=b*b-4*a*c;
if(j>0)
{printf("x1=%.5f;x2=%.5f\n",((-b+sqrt(j))/(2*a))+0.000001,(-b-sqrt(j))/(2*a))+0;}
else
if(j==0)
{printf("x1=x2=%.5f\n",(-b)/(2*a))+0;}
else
{printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a)+0,sqrt(-j)/2/a+0,(-b)/(2*a)+0,sqrt(-j)/2/a)+0;}
}
}
|
27
|
13,113 |
int main()
{
double a,b,c;
double x1,x2;
int n;
cin>>n;
for (int i=1;i<=n;i++)
{
cin>>a>>b>>c;
if (b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else if (b*b-4*a*c==0)
{
x1 = (-b)/(2*a);
x2 = (-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
if (b==0)
{
cout<<fixed<<setprecision(5)<<"x1="<<(0)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<";"<<"x2="<<(0)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<";"<<"x2="<<(-b)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,114 |
int main(){
int n; //????
cin>>n; //????
for (int i=0;i<n;i++){ //????
double a,b,c; //????
cin>>a>>b>>c; //????
double delta=b*b-4*a*c;//???????
if (delta>0){ //????
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt(delta))/(a*2),(-b-sqrt(delta))/(a*2));
}
if (delta==0){
printf("x1=x2=%.5f\n",(-b)/(a*2));
}
if (delta<0){
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(a*2)+1.0-1.0,sqrt(-delta)/(a*2),(-b)/(a*2)+1.0-1.0,sqrt(-delta)/(a*2));
}
}
return 0; //???????????????????
}
|
27
|
13,115 |
int main(int argc, char* argv[])
{
double a,b,c,disc,x1,x2,p,q,N,m;
scanf("%lf",&N);
for(m=1;m<=N;m++){
scanf("%lf%lf%lf",&a,&b,&c);
disc=b*b-4*a*c;
if(disc>0){
p=-b/(2*a);
q=sqrt(disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(disc==0){
p=-b/(2*a);
x1=p;
printf("x1=x2=%.5lf\n",x1);
}
else if(disc<0,b/(2*a)==0){
p=b/(2*a);
q=sqrt(-disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
else{
p=-b/(2*a);
q=sqrt(-disc)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13,116 |
main()
{
int n,i;
double a[999],b[999],c[999],x1,x2,d;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
{
for(i=1;i<=n;i++)
{ if (b[i]!=0)
{d=b[i]*b[i]-4*a[i]*c[i];
if(d>0)
{ x1=(-b[i] + sqrt(d))/(2*a[i]);
x2=(-b[i] - sqrt(d))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{ x1=-b[i]/(2*a[i]);
x2=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
if(d<0)
{ x1=-b[i]/(2*a[i]);
x2=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
if (b[i]==0)
{
d=b[i]*b[i]-4*a[i]*c[i];
if(d>0)
{ x1=(-b[i] + sqrt(d))/(2*a[i]);
x2=(-b[i] - sqrt(d))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{ x1=(fabs)(-b[i]/(2*a[i]));
x2=(fabs)(-b[i]/(2*a[i]));
printf("x1=x2=%.5lf\n",x1);
}
if(d<0)
{ x1=(fabs)(-b[i]/(2*a[i]));
x2=(fabs)(sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]));
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
}
}
}
|
27
|
13,117 |
int main(int argc, char* argv[])
{int n,i;
double a,b,c,d,x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
d=-4*a*c+b*b;
if(d>0)
{x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
else if(d==0)
{x1=(-b+sqrt(d))/(2*a);
printf("x1=x2=%.5lf\n",x1);}
else
{printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",(-b)/(2*a),
sqrt(-d)/(2*a),(-b)/(2*a),sqrt(-d)/(2*a));}}
return 0;
}
|
27
|
13,118 |
int main(){
int n;
cin >> n;
double a,b,c,delta;
for (int i=1; i<=n ;++i){
cin >> a >> b >> c;
delta = b*b - 4*a*c;
if (delta == 0){
cout << "x1=x2=";
printf("%.5f", (-b)/(2*a));
}
if (delta > 0 ){
cout << "x1=";
printf("%.5f", (-b + sqrt(b*b-4*a*c))/(2*a));
cout << ";x2=";
printf("%.5f", (-b - sqrt(b*b-4*a*c))/(2*a));
}
if (delta < 0){
delta = -delta;
double shi,xu;
shi = (-b)/(2*a); xu = (sqrt(delta))/(2*a);
if (shi == 0) shi=0;
cout << "x1=";
printf("%.5f", shi);
cout << "+";
printf("%.5f", xu);
cout << "i;";
cout << "x2=";
printf("%.5f", shi);
cout << "-";
printf("%.5f", xu);
cout << "i" ;
}
cout << endl;
}
return 0;
}
|
27
|
13,119 |
int main()
{
double a,b,c;
double x1,x2,delta;
double root;
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
delta=b*b-4*a*c;
if(delta<0)
{
delta=-delta;
root=(-b)/(2*a);
if(root==0) root=-root;
printf("x1=%.5f",root);
printf("+");
printf("%.5f",sqrt(delta)/(2*a));
printf("i");
printf(";");
printf("x2=%.5f",root);
printf("-");
printf("%.5f",sqrt(delta)/(2*a));
printf("i");
printf("\n");
}
else
{
x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
if(x1==x2)
{
printf("x1=x2=%.5f",x1);
printf("\n");
}
else
{
printf("x1=%.5f",x1);
printf(";");
printf("x2=%.5f",x2);
printf("\n");
}
}
}
return 0;
}
|
27
|
13,120 |
void main()
{
int n;
int i;
double a[100],b[100],c[100];
double x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
for(i=0;i<n;i++)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1 = (-b[i] + sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2 = (-b[i] - sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b[i]*b[i]-4*a[i]*c[i]<0)
{
x1 =sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
x2 = sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b[i]/(2*a[i]),x1,-b[i]/(2*a[i]),x2);
}
else
{
x1= -b[i]/(2*a[i]);
printf("x1=x2=%.5f\n",x1);
}
}
}
|
27
|
13,121 |
int main()
{
int n,h=1;
double a,b,c,e;
double x1,x2,y;
scanf("%d",&n);
for(h=1;h<=n;h++)
{
scanf("%lf %lf %lf",&a,&b,&c);
y=b*b-4*a*c;
if(y>0)
{
x1=(-b+sqrt(y))/(2*a);
x2=(-b-sqrt(y))/(2*a);
if(c==0)
printf("x1=0.00000;x2=%.5f\n",x2);
else
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
if(y==0)
{
x1=x2=(-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
e=(sqrt(-y))/(2*a);
if(b==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",0.00000,e,0.00000,e);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a),e,(-b)/(2*a),e);
}
}
getchar();
getchar();
getchar();
}
|
27
|
13,122 |
void main()
{
int i=1,n;
double x1,x2,m,t,a,b,c;
scanf("%d\n",&n);
while(i<=n)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
if(b*b==a*c*4)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
if(b*b>4*a*c)
{
x1=(0-b + sqrt(b*b-4*a*c))/(2*a) ;
x2=(0-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
else
{
m=sqrt(0-b*b+4*a*c)/(2*a);
t=-b/(2*a);
if(t==0)
{
t=-t;
printf("x1=%.5lf+%.5lfi;",t,m);
printf("x2=%.5lf-%.5lfi\n",t,m);
}
else
{
printf("x1=%.5lf+%.5lfi;",t,m);
printf("x2=%.5lf-%.5lfi\n",t,m);
}
}
}
i=i+1;
}
}
|
27
|
13,123 |
int main ()
{
int n;
double a , b , c , d , x1 , x2 , i;
scanf ( "%d" , &n );
for ( ; n > 0 ; n -- )
{
scanf ( "%lf%lf%lf" , &a , &b , &c );
d = b*b-4*a*c;
if ( d > 0 )
{
x1 = (-b + sqrt(d))/(2*a);
x2 = (-b - sqrt(d))/(2*a);
if ( x1 == 0 ) x1 = 0;
if ( x2 == 0 ) x2 = 0;
printf ( "x1=%.5lf;x2=%.5lf\n" , x1 , x2 );
}
else if ( d == 0 )
{
x1 = -b/(2*a);
if ( x1 == 0 ) x1 = 0;
printf ( "x1=x2=%.5lf\n" , x1);
}
else
{
x1 = -b/(2*a);
x2 = sqrt(-d)/(2*a);
if ( x1 == 0 ) x1 = 0;
if ( x2 == 0 ) x2 = 0;
if ( x2 < 0 ) x2 = -x2;
printf ( "x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n" , x1 , x2 , x1 , x2);
}
}
// getchar (); getchar ();
return 0;
}
|
27
|
13,124 |
int main(int argc, char* argv[])
{
int n;
scanf("%d/n",&n);
double a=0,b=0,c=0;
for(;n>0;n--){
scanf("%lf %lf %lf",&a,&b,&c);
double x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
double x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if((b*b-4*a*c)>0){
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else if((b*b-4*a*c)==0){
printf("x1=x2=%.5f\n",x2);}
else if((b*b-4*a*c)<0){
if(b!=0){
double c1,d1,d2;
c1=(-b/(a*2.0));
d1=sqrt(4*a*c-b*b)/(2*a);
d2=-d1;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",c1,d1,c1,d2);
}
else if(b==0){
double c2,d3,d4;
c2=0;
d3=sqrt(4*a*c-b*b)/(2*a);
d4=-d3;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",c2,d3,c2,d4);
}
}
};
return 0;
}
|
27
|
13,125 |
int main()
{
int i, n;
double *p, a,b,c, dt, x1, x2;
scanf("%d",&n);
p=malloc(sizeof(double)*3*n);
for(i=0; i<n; i++)
{
scanf("%lf %lf %lf", p+i*3, p+i*3+1, p+i*3+2);
}
for(i=0; i<n; i++)
{
a=*(p+i*3);
b=*(p+i*3+1);
c=*(p+i*3+2);
dt=b*b-4*a*c;
if(dt>0)
{
x1 = (-b + sqrt(dt))/(2*a);
x2 = (-b - sqrt(dt))/(2*a);
printf("x1=%.5f;x2=%.5f\n", x1, x2);
}
else if(fabs(dt)<0.00001)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n", x1);
}
else
{
x1 = (-b)/(2*a);
if(fabs(x1)<0.00001)
x1=0;
x2 = sqrt(-dt)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", x1, x2, x1, x2);
}
}
}
|
27
|
13,126 |
int main()
{
int n,k,j;
double a[100],b[100],c[100],p=0.00,q=0.00,m=0.00;
scanf("%d",&n);
for(k=0;k<n;k++)
{scanf("%lf%lf%lf/n",&a[k],&b[k],&c[k]);}
for(j=0;j<n;j++)
{
m=b[j]*b[j]-4*a[j]*c[j];
p=-b[j]/(2*a[j]);
if(p==-0)
p=0.00000;
if(m<0){
q=sqrt(-m)/(2*a[j]);
printf("x1=%.5lf+%.5lfi;x2=%.5f-%.5fi\n",p,q,p,q);}
if(m==0){
printf("x1=x2=%.5f\n",p);}
if(m>0){
q=sqrt(m)/(2*a[j]);
printf("x1=%.5f;x2=%.5f\n",p+q,p-q);}
}
return 0;
}
|
27
|
13,127 |
/*
*???????(8.3) ????????? (1051)
*??????
*???2012?10?15? 18:15:34
*?????????? ax2 + bx + c = 0 ?????a???0?
*/
int main(){
float a=0.0,b=0.0,c=0.0;
double x1=0.0,x2=0.0,x3=0.0,x4=0.0,D=0.0;
int n=0;
cin>>n;
while(n--){
cin>>a>>b>>c;
D=b*b-4*a*c;
if(D>=0){
x1=(-b+sqrt(D))/(2*a) ;
x2 =(-b-sqrt(D))/(2*a);
}
else{
x3=(-b)/(2*a);
x4=sqrt(-D)/(2*a);
}
if(x1==0){
x1=0.0;
}
if(x2==0){
x2-0.0;
}
if(x3==0){
x3=0.0;
}
if(D>0){
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else if(D==0){
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else{
cout<<fixed<<setprecision(5)<<"x1="<<x3<<"+"<<x4<<"i;x2="<<x3<<"-"<<x4<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,128 |
int main()
{
double a , b , c , x1 , x2 ;
int n;
cin >> n;
for(int i = 0; i < n; i++)
{
cin >> a >> b >> c ;
if( b * b - 4 * a * c > 0 )
{
x1 = ( -b + sqrt(b*b-4*a*c) )/( 2*a ) ;
x2 = ( -b - sqrt(b*b-4*a*c) )/( 2*a ) ;
if( x1 == 0 )
x1 = 0;
if( x2 == 0)
x2 = 0;
cout << "x1=" ;
printf("%.5lf", x1 );
cout<< ";" << "x2=" ;
printf("%.5lf\n", x2 );
}
else if( b * b - 4 * a * c == 0)
{
x1 = - b / ( 2*a );
if( x1 == 0 )
x1 = 0;
cout<<"x1=x2=";
printf("%.5lf\n",x1);
}
else
{
double m,n;
m = sqrt( 4 * a * c - b * b )/( 2*a );
n = - b / ( 2*a );
if( b == 0)
n = 0;
cout << "x1=";
printf( "%.5lf", n );
cout << "+";
printf( "%.5lf", m );
cout << "i" << ";" << "x2=" ;
printf( "%.5lf", n );
cout << "-" ;
printf( "%.5lf", m );
cout << "i" << endl;
}
}
return 0;
}
|
27
|
13,129 |
int main()
{
int i,n;
double x1,x2,a,b,c;
scanf("%d",&n);
double m[n],y[n],z[n];
for(i=1;i<=n;i++){
scanf("%lf %lf %lf",&m[i],&y[i],&z[i]);
}
for(i=1;i<=n;i++){
a=m[i];b=y[i];c=z[i];
if((b*b-4*a*c)<0){
x1=-b/(2*a);
x2=sqrt(-b*b+4*a*c)/(2*a);
if(x1==-0)
{x1=0;
}
if(x2==-0)
{x2=0;
}
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
else{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
if(x1==x2){
printf("x1=x2=%.5f\n",x1);
}
else{
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
}
}
}
|
27
|
13,130 |
int main()
{
double a,b,c,x1,x2,d;
int n;
scanf("%d",&n);
int i;
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4.0*a*c;
if(d>0)
{
x1=(-b+sqrt(d))/(2.0*a);
x2=(-b-sqrt(d))/(2.0*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(d==0)
{
printf("x1=x2=%.5lf\n",-b/(2.0*a));
}
else
{
double p=sqrt(-d)/(2.0*a);
if(b/(2*a)!=0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2.0*a),p,-b/(2.0*a),p);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",b/(2.0*a),p,b/(2.0*a),p);}
}
return 0;
}
|
27
|
13,131 |
int main()
{
int n,i;
double a,b,c,x1,x2,d;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
d=sqrt(4*a*c-b*b)/(2*a);
printf("x1=-%.5lf+%.5lfi;x2=-%.5lf-%.5lfi\n",b/(2*a),d,b/(2*a),d);
}
}
return 0;
}
|
27
|
13,132 |
int main()
{
float a,b,c,n,p,q,l;
scanf("%f",&n);
float i=1;
while (i<=n)
{
scanf ("%f %f %f\n",&a,&b,&c);
l=b*b-4*a*c;
if (b!=0)
p=-b/(2*a);
else
p=b/(2*a);
if (l<0)
{
q=sqrt(-l)/(2*a);
printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
else
{
q=sqrt(l)/(2*a);
if (p+q==p-q)
printf ("x1=x2=%.5f\n",p);
else
printf ("x1=%.5f;x2=%.5f\n",(p+q),(p-q));
}
i++;
}
}
|
27
|
13,133 |
void main()
{
int n,i;
double a,b,c,x1,x2;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if((b*b-4*a*c)>0)
{ x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if((b*b-4*a*c)==0)
{
x1 = -b /(2*a);
x2 = -b /(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if((b*b-4*a*c)<0)
{
x1 =-b /(2*a);
x2=sqrt(-b*b+4*a*c)/(2*a);
if(x1==0)
{
x1=b/(2*a);
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13,134 |
int main()
{
int n;
float a,b,c;
scanf("%d",&n);
while(n--){
scanf("%f %f %f",&a,&b,&c);
if((b*b-4*a*c)==0)
printf("x1=x2=%.5f\n",-b/(2*a));
if((b*b-4*a*c)>0)
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt((b*b-4*a*c)))/(2*a),(-b-sqrt((b*b-4*a*c)))/(2*a));
if((b*b-4*a*c)<0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),(sqrt((-b*b+4*a*c))/(2*a)),-b/(2*a),(sqrt((-b*b+4*a*c))/(2*a)));
}
return 0;
}
|
27
|
13,135 |
int main()
{
int n,i;
double a,b,c,x1,x2;
scanf("%d", &n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf", &a, &b, &c);
if(b*b - 4*a*c > 0)
{
x1 = (-b + sqrt(b*b - 4*a*c))/(2*a);
x2 = (-b - sqrt(b*b - 4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(b*b - 4*a*c == 0)
{
x1 = x2 = -b/(2*a);
printf("x1=x2=%.5lf\n", x1);
}
else
{
printf("x1=%.5lf+%.5lfi;x2=%.5f-%.5lfi\n", (0-b)/(2*a), sqrt((4*a*c - b*b))/(2*a), (0-b)/(2*a), sqrt((4*a*c - b*b))/(2*a));
}
}
return 0;
}
|
27
|
13,136 |
double x1, x2;
void cal(double a, double b, double c)
{
double deta = b * b - 4 * a * c;
if (deta > 0)
{
x1 = (- b + sqrt(deta)) / (2 * a);
x2 = (- b - sqrt(deta)) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << ";x2=" << x2 << endl;
}
else
{
if (deta == 0)
{
if(b == 0)
x1 = 0;
else
x1 = - b / (2 * a);
cout <<fixed << setprecision(5)<< "x1=x2=" << x1 << endl;
}
else
{
x1 = sqrt(-deta) / (2 * a);
if(b == 0)
x2 = 0;
else
x2 = - b / (2 * a);
cout <<fixed << setprecision(5)<< "x1=" << x2 <<"+" << x1 << "i;x2=" <<x2
<<"-"<<x1<<"i" << endl;
}
}
}
int main()
{
int n, i;
double a, b, c;
cin >> n;
for(i = 0; i < n; i++)
{
cin >> a >> b >> c;
cal(a,b,c);
}
return 0;
}
|
27
|
13,137 |
int main()
{
int x,n;
double a,b,c,x1,x2,disc,p,q;
double w[99][3];
scanf("%d\n",&n);
for(x=0;x<n;x++)
{
scanf("%lf %lf %lf\n",&a,&b,&c);
w[x][0]=a;
w[x][1]=b;
w[x][2]=c;
}
for(x=0;x<n;x++)
{
a=w[x][0];
b=w[x][1];
c=w[x][2];
disc=b*b-4*a*c;
if(fabs(disc)<1e-6)
printf("x1=x2=%.5f\n",-b/2/a);
else
if(disc>1e-6)
{
x1=(-b+sqrt(disc))/2/a;
x2=(-b-sqrt(disc))/2/a;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(disc<-(1e-6))
{
p=-b/2/a;
q=sqrt(-disc)/2/a;
if(fabs(b)<1e-6) p=fabs(p);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
}
}
|
27
|
13,138 |
int main()
{
int n;
double a,b,c,x1,x2,k;
int i;
scanf ("%d\n",&n);
for (i=0;i<n;i++)
{scanf ("%lf %lf %lf",&a,&b,&c);
k = b * b - 4 * a * c ;
if (k>0){
printf ("x1=%.5f;x2=%.5f\n",(-b+sqrt(k))/(2*a),(-b-sqrt(k))/(2*a));
}
if (k==0){
printf ("x1=x2=%.5f\n",(-b+sqrt(k))/(2*a));
}
if (k<0){
if (b==0) printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",0.0,sqrt(-k)/(2*a),0.0,sqrt(-k)/(2*a));
else printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a),sqrt(-k)/(2*a),(-b)/(2*a),sqrt(-k)/(2*a));
}
}
return 0;
}
|
27
|
13,139 |
int main()
{
double a,b,c,d,e,f,g,x1,x2;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>0)
{
if(b==0)
{
x1=(b+sqrt(d))/(2*a);
x2=(b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
}
else if(d==0)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
if(b==0)
{
e=-d;
f=sqrt(e)/(2*a);
g=(-b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",g,f,g,f);
}
else
{
e=-d;
f=sqrt(e)/(2*a);
g=(-b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",g,f,g,f);
}
}
}
return 0;
}
|
27
|
13,140 |
int main()
{
int n,i;
double a,b,c;
double s,t,m,k,u;
scanf("%d",&n);
for(i=1;i<=n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0)
{s=-(b/(2*a))+sqrt(b*b-4*a*c)/(2*a);
t=-(b/(2*a))-sqrt(b*b-4*a*c)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",s,t);
}
else if(b*b-4*a*c==0)
{
k=(-b)/(2*a);
printf("x1=x2=%.5lf\n",k);
}
else
{m=-b/(2*a);
u=sqrt(-(b*b-4*a*c))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,u,m,u);}
}
return 0;
}
|
27
|
13,141 |
int main()
{
int n,i,e;
double a[50][3],x1,x2,s1,s2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
for(e=0;e<3;e++)
{
scanf("%lf",&a[i][e]);
}
}
for(i=0;i<n;i++)
{
if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]>=0)
{
x1=(-a[i][1]+sqrt(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]))/(2*a[i][0]);
x2=(-a[i][1]-sqrt(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]))/(2*a[i][0]);
if(x1!=x2)
{
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
printf("x1=x2=%.5lf\n",x1);
}
}
else
{
s1=-a[i][1]/(2*a[i][0]);
s2=sqrt(4*a[i][0]*a[i][2]-a[i][1]*a[i][1])/(2*a[i][0]);
if(s1==0)
{
s1=-s1;
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",s1,s2,s1,s2);
}
}
return 0;
}
|
27
|
13,142 |
//********************************
//*???????????? **
//*?????? 1300012972 **
//*???2013.10.11 **
//********************************
int main()
{
int n;
// ??????a,b,c???????x1,x2??????D?????d,e??????
double a, b, c, x1, x2, D, d, e;
cin >> n;
for (int k=1; k<=n; k++)
{
cin >> a >> b >> c;
if (b * b-4 * a * c > 0) // ????????????
{
x1=(-b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2=(-b - sqrt(b * b - 4 * a * c)) / (2 * a); //????
if (fabs(x1) < 1e-4)
x1=0;
if (fabs(x2) < 1e-4) //????
x2=0;
cout << fixed << setprecision(5) << "x1=" << x1
<< ";" << "x2=" << x2 << endl; // ???
}
else if (b * b - 4 * a * c == 0) // ?????????
{
x1=(-b) / (2 * a);
if (fabs(x1)<1e-4)
x1=0;
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl; //????
}
else
{
d=(-b) / (2 * a); // ?????
e=sqrt(4 * a * c - b * b) / (2 * a); //?????
if (fabs(d) < 1e-4)
d=0;
cout << fixed << setprecision(5) << "x1=" << d << "+" << e << "i"
<< ";" << "x2=" << d << "-" << e << "i" << endl;
}
}
return 0;
}
|
27
|
13,143 |
int main()
{
double a,b,c,x1,x2,m,y;int n,i;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if (b*b-4*a*c>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if (b*b-4*a*c==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if (b*b-4*a*c<0)
{
m=-b/(2*a);
y=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;",m,y);
printf("x2=%.5lf-%.5lfi\n",m,y);
}
}
return 0;
}
|
27
|
13,144 |
int main()
{
int i,n;
double a,b,c,x1,x2,dert,d,e;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
dert=b*b-4*a*c;
if(dert>0)
{
x1=(-b+sqrt(dert))/(2*a);
x2=(-b-sqrt(dert))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(dert==0)
{
x1=(-b+sqrt(dert))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if(dert<0)
{
dert=-dert;
d=(-b)/(2*a);
d=(d==-0)?(0):(d);
e=sqrt(dert)/(2*a);
e=(e>=0)?(e):(-e);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d,e,d,e); }
}
return 0;
}
|
27
|
13,145 |
int main()
{
int i,n;
cin>>n;
for(i=1;i<=n;i++)
{
double a=0,b=0,c=0;
cin>>a>>b>>c;
if(b*b-4*a*c==0)
{
cout<<"x1=x2="<<fixed<<setprecision(5)<<-b/(2*a)<<endl;
continue;
}
if(b*b-4*a*c>0)
{
cout<<"x1="<<fixed<<setprecision(5)<<(-b + sqrt(b*b-4*a*c))/(2*a)
<<";x2="<<(-b - sqrt(b*b-4*a*c))/(2*a)<<endl;
continue;
}
if(b*b-4*a*c<0)
{
if(b/(2*a)==0)
cout<<fixed<<setprecision(5)<<"x1="<<b/(2*a)<<"+"<<sqrt(-(b*b-4*a*c))/(2*a)
<<"i;x2="<<b/(2*a)<<"-"<<sqrt(-(b*b-4*a*c))/(2*a)<<"i"<<endl;
else
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)<<"+"<<sqrt(-(b*b-4*a*c))/(2*a)
<<"i;x2="<<-b/(2*a)<<"-"<<sqrt(-(b*b-4*a*c))/(2*a)<<"i"<<endl;
continue;
}
}
return 0;
}
|
27
|
13,146 |
void main()
{
int k,n;
double a[100],b[100],c[100],x1[100],x2[100],p[100],q[100],d[100];
char i='i';
scanf("%d\n",&n);
for(k=1;k<=n;k++)
{
scanf("%lf%lf%lf\n",&a[k],&b[k],&c[k]);
}
for(k=1;k<=n;k++)
{
d[k]=b[k]*b[k]-4*a[k]*c[k];
if(b[k]!=0)
{
if(d[k]>=0)
{
if(d[k]>0)
{
x1[k]=(-b[k]+sqrt(d[k]))/(2*a[k]);
x2[k]=(-b[k]-sqrt(d[k]))/(2*a[k]);
printf("x1=%.5lf;x2=%.5lf\n",x1[k],x2[k]);
}
else
{
x1[k]=x2[k]=-b[k]/(2*a[k]);
printf("x1=x2=%.5lf\n",x1[k],x2[k]);
}
}
else
{
p[k]=(-b[k])/(2*a[k]);
q[k]=sqrt(-d[k])/(2*a[k]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p[k],q[k],p[k],q[k]);
}
}
else
{
if(d[k]>=0)
{
if(d[k]>0)
{
x1[k]=(sqrt(d[k]))/(2*a[k]);
x2[k]=(sqrt(d[k]))/(2*a[k]);
printf("x1=%.5lf;x2=%.5lf\n",x1[k],x2[k]);
}
else
{
x1[k]=0;
x2[k]=0;
printf("x1=x2=%.5lf\n",x1[k],x2[k]);
}
}
else
{
q[k]=(sqrt(-d[k]))/(2*a[k]);
p[k]=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p[k],q[k],p[k],q[k]);
}
}
}
}
|
27
|
13,147 |
main()
{
int n,q;
scanf("%d",&n);
double p[n][3];
int j;
for(j=0;j<n;j++)
{
scanf("%lf %lf %lf",&p[j][0],&p[j][1],&p[j][2]);
}
for(q=0;q<n;q++)
{
double a,b,c,x1,x2,d,e;
a=p[q][0];b=p[q][1];c=p[q][2];
if(b*b-4*a*c>0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{if(b*b-4*a*c==0)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
d=0-b/(2*a);
e=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d,e,d,e);
}
}
}
}
|
27
|
13,148 |
int main()
{
double a,b,c,d,x,y;
int k;
cin>>k;
for(int i=1;i<=k;i++)
{cin>>a>>b>>c;
d=b*b-4*a*c;
if(d>=0)
{if(d<=0)
{y=-b/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<y<<endl;
}
else
{
d=sqrt(d);
x=(-b+d)/(2*a);
y=(-b-d)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x<<";x2="<<y<<endl;
}
}
else
{
d=sqrt(-d)/(2*a);
b=-b/(2*a);
if(b==0)
{
cout<<fixed;
cout<<setprecision(5)<<"x1=0.00000+"<<d<<"i"<<";x2=0.00000-"<<d<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<b<<"+"<<d<<"i"<<";x2="<<b<<"-"<<d<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,149 |
int main(){
double d[20][3];
int n,i;
scanf("%d", &n);
for(i=0;i<n;i++){
double a,b,c;
scanf("%lf %lf %lf" , &a,&b,&c);
d[i][0]=a;
d[i][1]=b;
d[i][2]=c;
}
for(i=0;i<n;i++){
double a,b,c;
double p;
a=d[i][0];
b=d[i][1];
c=d[i][2];
p=b*b-4*a*c;
if(p==0) {if (b==0) printf("x1=x2=%.5lf\n" ,abs((-b)/(2*a)));
else printf("x1=x2=%.5lf\n" ,(-b)/(2*a));
}
if(p>0) printf("x1=%.5lf;x2=%.5lf\n",(-b+sqrt(p))/(2*a),(-b-sqrt(p))/(2*a));
if(p<0) {if (b==0) printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n" , (b)/(2*a), sqrt(-p)/(2*a),(b)/(2*a),sqrt(-p)/(2*a));
else printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n" , (-b)/(2*a), sqrt(-p)/(2*a),(-b)/(2*a),sqrt(-p)/(2*a));
}
}
return 0;
}
|
27
|
13,150 |
/*
* 2.cpp
*
* Created on: 2012-9-29
* Author: 12162
* ????????
*/
int i,n;
double a, b, c,j;
double x[2];
int main()
{
cin>>n;//?????????
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;//????????
if(b==0)//??0???
{b=-b;}
j=b*b-4*a*c;
//???????
if(j>0)
{
x[0] = (-b + sqrt(b*b-4*a*c))/(2*a) ;
x[1] = (-b - sqrt(b*b-4*a*c))/(2*a) ;
cout<<"x1=";
printf("%.5f", x[0]);
cout<<";"<<"x2=";
printf("%.5f", x[1]);
cout<<endl;
}
if(j==0)
{
cout<<"x1=x2=";
printf("%.5f", -b/(2*a));
cout<<endl;
}
if(j<0)
{
cout<<"x1=";
printf("%.5f", -b/(2*a));
cout<<"+";
printf("%.5f",sqrt(4*a*c-b*b)/(2*a));
cout<<"i"<<";"<<"x2=";
printf("%.5f", -b/(2*a));
printf("%.5f",-sqrt(4*a*c-b*b)/(2*a));
cout<<"i";
cout<<endl;
}
}
return 0;
}
|
27
|
13,151 |
int main()
{
int n;
scanf("%d",&n);
int j;
float a[10],b[10],c[10];
for(j=0;j<n;j++)
{
scanf("%f %f %f",&a[j],&b[j],&c[j]);
double d;
d=b[j]*b[j]-4*a[j]*c[j];
if(d==0)
{
double e,f;
e=(-b[j])/(2*a[j]);
f=(sqrt(d))/(2*a[j]);
if(e==0)
e=0;
if(f==0)
f=0;
printf("x1=x2=%.5f\n",e);
}
else if(d>0)
{
double e,f;
e=(-b[j])/(2*a[j]);
f=(sqrt(d))/(2*a[j]);
if(e==0)
e=0;
if(f==0)
f=0;
printf("x1=%.5f;x2=%.5f\n",e+f,e-f);
}
else if(d<0)
{
double e,f;
e=(-b[j])/(2*a[j]);
f=(sqrt(-d))/(2*a[j]);
if(e==0)
e=0;
if(f==0)
f=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
return 0;
}
|
27
|
13,152 |
double a,b,c,x1,x2,d;
int n,i;
double test(double p)
{
if((p-0<0.000000001)&&(0-p<0.000000001)) return 0;
else return p;
}
void doit()
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
d=test(d);
if((d-0<0.000000001)&&(0-d<0.000000001))
{
x1=-b/(2*a);
x1=test(x1);
printf("x1=x2=%.5f\n",x1);
return ;
}
if(d>0)
{
x1=(-b+sqrt(d))/(2*a);
x1=test(x1);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
return ;
}
if(d<0)
{
x1=-b/(2*a);
x1=test(x1);
x2=sqrt(-d)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
return ;
}
}
int main()
{
scanf("%d",&n);
for(i=1;i<=n;i++)
doit();
return 0;
}
|
27
|
13,153 |
float derta(float x,float y,float z)
{
return(y*y-4*x*z);
}
void main()
{
float a,b,c;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f%f%f",&a,&b,&c);
if(a!=0)
{
if(derta(a,b,c)==0)
{
printf("x1=x2=%.5f\n",-b/(2*a));
}
else if(derta(a,b,c)>0)
{
printf("x1=%.5f;x2=%.5f\n",(-b+sqrt(derta(a,b,c)))/(2*a),(-b-sqrt(derta(a,b,c)))/(2*a));
}
else
{
if(-b/(2*a)==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",fabs(-b/(2*a)),sqrt(-derta(a,b,c))/(2*a),fabs(-b/(2*a)),sqrt(-derta(a,b,c))/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-derta(a,b,c))/(2*a),-b/(2*a),sqrt(-derta(a,b,c))/(2*a));
}
}
else printf("ERROR\n");
}
}
|
27
|
13,154 |
int main()
{double a,b,c,x1,x2,p,q;
int n,j;
char y='i';
scanf("%d",&n);
for(j=1;j<=n;j++)
{scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c<0)
{p = b/(-2*a);q= sqrt(-b*b+4*a*c)/(2*a);
if(p==-0){p=0;}
printf("x1=%.5lf+%.5lf%c;x2=%.5lf-%.5lf%c\n",p,q,y,p,q,y);}
if(b*b-4*a*c==0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);}
if(b*b-4*a*c>0)
{x1 = (-b + sqrt(b*b-4*a*c))/(2*a);x2 = (-b - sqrt(b*b-4*a*c))/(2*a) ;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);}
}
return 0;
}
|
27
|
13,155 |
int main ()
{
int n,i;
cin >>n;
float a[n][3];
double d,x,y;
i=1;
while (i<=n)
{
cin >>a[i][1]>>a[i][2]>>a[i][3];
i++;
}
i=1;
while (i<=n)
{
d=a[i][2]*a[i][2]-4*a[i][1]*a[i][3];
if (d==0)
{
x=-a[i][2]/(2*a[i][1]);
cout <<fixed<<setprecision(5)<<"x1=x2="<<x<<endl;
}
if (d>0)
{
x=(-a[i][2]+sqrt(d))/(2*a[i][1]);
y=(-a[i][2]-sqrt(d))/(2*a[i][1]);
cout <<fixed<<setprecision(5)<<"x1="<<x<<";x2="<<y<<endl;
}
if (d<0)
{
x=-a[i][2]/(2*a[i][1]);
y=sqrt(-d)/(2*a[i][1]);
if (x==-0)
{
x=0;
}
cout <<fixed<<setprecision(5)<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
i++;
}
return 0;
}
|
27
|
13,156 |
//****************************************
//*?? ????????? **
//*?????? 1100013020 **
//*???2011.9.23 **
//****************************************
int main()
{
int i,n;
double a[100],b[100],c[100],x1[100],x2[100],k[100],l[100],p[100]; //???????????
i=1;
cin>>n;
for (;i<=n;) //????
{
cin>>a[i]>>b[i]>>c[i];
if (b[i]*b[i]-4*a[i]*c[i]>=0) //??
{
x1[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if (x1[i]<0 || x1[i]>0)
x1[i]=x1[i];
else
x1[i]=0.00000;
if (x2[i]<0 || x2[i]>0)
x2[i]=x2[i];
else
x2[i]=0.00000;
}
else //???
{
k[i]=-b[i]/(2*a[i]);
l[i]=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
p[i]=i;
if (k[i]<0 || k[i]>0)
k[i]=k[i];
else
k[i]=0.00000; //??-0???
if (l[i]<0 || l[i]>0)
l[i]=l[i];
else
l[i]=0.00000; //??-0???
}
i=i+1; //??
}
i=1;
for (;i<=n;)
{
if (i<p[i] || i>p[i])
{
if (x1[i]<x2[i]||x1[i]>x2[i])
{
cout<<fixed<<setprecision(5)<<"x1="<<x1[i]<<";x2="<<x2[i]<<endl; //x1?x2??????????5???
}
else
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1[i]<<endl; //x1?x2????????5???
}
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<k[i]<<"+"<<l[i]<<"i"<<";x2="<<k[i]<<"-"<<l[i]<<"i"<<endl; //??
}
i=i+1;
}
return 0;
}
|
27
|
13,157 |
int main()
{
int n,j;
double x1,x2,m,p;
scanf("%d",&n);
double a,b,c;
for(j=1;j<=n;j++){
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0){
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(b*b-4*a*c==0){
x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else{
x1=-b/(2*a);
m=(sqrt(4*a*c-b*b)/(2*a));
x2=-b/(2*a);
p=(sqrt(4*a*c-b*b)/(2*a));
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,m,x2,p);}
}
return 0;
}
|
27
|
13,158 |
//?????????
int main()
{
int n = 0, i = 0;
cin >> n;
for (i = 1; i <= n; i++)
{
double a = 0, b = 0, c = 0;
cin >> a >> b >> c;
double d = b * b - 4 * a * c, x1 = 0, x2 = 0, r = 0,t = 0;
if (d >= 0)
{
x1 = (-b + sqrt(d)) / (2 * a);
x2 = (-b - sqrt(d)) / (2 * a);
if (x1 == x2)
cout << "x1=x2=" << fixed << setprecision(5) << x1 << endl;
else
cout << fixed << setprecision(5) << "x1=" << x1 << ";x2=" << x2 << endl;
}
else
{
d = - d;
r = - b / (2 * a);
if ( r == 0)
r = 0;
t = sqrt(d) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << r << "+" << t << "i" << ";x2=" << r << "-" << t << "i" << endl;
}
}
return 0;
}
|
27
|
13,159 |
int main ()
{
int n ,j;
cin >> n;
double cha , x1,x2;
float a[100], b[100], c[100];
for(j = 0 ; j < n; j++)
{
cin >> a[j] >> b[j] >> c[j];
cha =(double) b[j]* b[j] - 4 * a[j] * c[j];
if(cha > 0)
{
x1 = (-b[j] + sqrt(cha))/(2*a[j]);
x2 = (-b[j] - sqrt(cha))/(2*a[j]);
cout <<fixed << setprecision(5)<< "x1="<< x1 << ";" <<"x2="<< x2 << endl;
}
else if (cha == 0)
cout <<fixed << setprecision(5) <<"x1=x2="<<-b[j]/(2*a[j])<<endl;
else
{ double i = -b[j]/(2*a[j]);
cout << fixed << setprecision(5) <<"x1="<<i<<"+"<<sqrt(-cha)/(2*a[j])<<"i"<<";"<<"x2="<<i<<"-"<<sqrt(-cha)/(2*a[j])<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,160 |
main()
{
int n,i;
scanf("%d",&n);
double a,b,c,x,num1,num2,k1,k2;
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
x=b*b-4*a*c;
if(x>=0)
{
if(x==0)
{
num1=num2=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",num1);
}
else
{
num1= (-b + sqrt(b*b-4*a*c))/(2*a);
num2= (-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",num1,num2);
}
}
else
if(b!=0)
{
k1=-b/(2*a),k2=(sqrt(-b*b+4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",k1,k2,k1,k2);
}
else
{
k1=b/(2*a),k2=(sqrt(-b*b+4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",k1,k2,k1,k2);
}
}
}
|
27
|
13,161 |
double x1 ( double a , double b , double c ){
double x11 ;
double det = b*b-4*a*c ;
if ( det >= 0 ) x11 = (-b + sqrt(det))/(2*a);
else x11 = sqrt(-det)/(2*a);
return(x11);
}
double x2 ( double a , double b , double c ){
double x22;
double det = b*b-4*a*c ;
if(det >= 0) x22 = (-b - sqrt(det)) / (2*a);
else x22 = sqrt(-det)/(2*a);
return(x22);
}
int main(){
int n , i;
double det;
double a[100] , b[100] , c[100];
scanf("%d" , &n );
for( i = 1 ; i <= n ; i++ ){
scanf("%lf%lf%lf\n" , &a[i] , &b[i] , &c[i]);
}
for( i = 1 ; i <= n ; i++ ){
//printf("%.5f %.5f %.5f \n" , a[i] , b[i] , c[i]);
det = b[i] * b[i] - 4 * a[i] * c[i] ;
if( det >= 0 && x1( a[i] , b[i] , c[i] ) != x2( a[i] , b[i] , c[i] ) ) printf( "x1=%.5f;x2=%.5f\n" , x1( a[i] , b[i] , c[i] ) , x2( a[i] , b[i] , c[i]));
else if( det >= 0 ) printf( "x1=x2=%.5f\n" , x1( a[i] , b[i] , c[i] ) );
else if( b[i] != 0) printf( "x1=%.5f+%.5fi;x2=%.5f-%.5fi\n" , -b[i] / (2*a[i]) , x1( a[i] , b[i] , c[i]) , -b[i] / (2*a[i]) , x2( a[i] , b[i] , c[i] ) );
else printf( "x1=%.5f+%.5fi;x2=%.5f-%.5fi\n" , b[i] / (2*a[i]) , x1( a[i] , b[i] , c[i]) , b[i] / (2*a[i]) , x2( a[i] , b[i] , c[i] ) );
//printf("%.5f\n %.5f",b[i] / (2 * a[i]) , b[i] );
}
return(0);
}
|
27
|
13,162 |
int main(){
int n,d=1;
double a,b,c,x1,x2,y,p,q;
scanf("%d",&n);
for(d=1;d<=n;d++){
scanf("%lf %lf %lf",&a,&b,&c);
y=b*b-4*a*c;
if(y>0){
x1 = (-b + sqrt(y))/(2*a);
x2 = (-b - sqrt(y))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(y==0){
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else{
p=-b/(2*a);
q=sqrt(-y)/(2*a);
if(b==0){
p=-p;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
if(b!=0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
}
return 0;
}
|
27
|
13,163 |
/*
* ?????????????.cpp
* ?????
* ????: 2012-10-10
* ????????????
*/
int main(){ //?????
double a=0.0,b=0.0,c=0.0,x1=0.0,x2=0.0,x3=0.0; //????????a,b,c,x1,x2,x3,x4
int n=1,n1=1; //????n,n1
cin>>n; //??n
while (cin>>a>>b>>c,n1<=n) //????
{
if ((b*b-4*a*c)>0) //????
{
x1=(-1*b + sqrt(b*b-4*a*c))/(2*a); //??x1
x2=(-1*b - sqrt(b*b-4*a*c))/(2*a); //??x2
printf("x1=%.5f", x1); //?x1?????????
cout<<";"; //????
printf("x2=%.5f", x2); //?x2?????????
cout<<endl;
}
else if((b*b-4*a*c)==0.0) //????
{
if((-1*b)/(2*a)==0) //????
cout<<"x1=x2="<<0<<endl; //??0
else
{x1=(-1*b)/(2*a); //??x1?x2
printf("x1=x2=%.5f",x1); //??x1?x2
cout<<endl;}
}
else //????
{
x3=sqrt(-(b*b-4*a*c))/(2*a); //??x1?x2???
if((-1*b)/(2*a)==0) //????
{
x1=0.0;
printf("x1=%.5f",x1); //??x1???
printf("+%.5f",x3);
cout<<"i"<<";"; //??i
printf("x2=%.5f", x1); //??x2???
printf("-%.5f", x3);
cout<<"i"<<endl; //??i
}
else //????
{x1=(-1*b)/(2*a); //??x1,x2???
printf("x1=%.5f", x1); //??x1???
printf("+%.5f",x3); //??x???
cout<<"i"<<";"; //??i???
printf("x2=%.5f", x1); //??x2???
printf("-%.5f",x3); //??x2???
cout<<"i"<<endl;} //??i
}
n1++; //n1??
}
return 0;
} //?????
|
27
|
13,164 |
main()
{
float m[100][3];
double x1,x2,delt,a,b,c,s,t;
int n,i,j;
scanf("%d",&n);
for(i=0;i<=n-1;i++)
{
for(j=0;j<=2;j++)
{
scanf("%f",&m[i][j]);
}
}
for(i=0;i<=n-1;i++)
{
a=(double)m[i][0];
b=(double)m[i][1];
c=(double)m[i][2];
delt=(double)(b*b-4*a*c);
if(delt>0)
{
x1 = (-b+1+sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
x2 = (-b+1-sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if(delt==0)
{
x1 = (-b+1+sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
x2 = (-b+1-sqrt(b*b-4*a*c))/(2*a)-1/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if(delt<0)
{
s=((-b+1)/(2*a))-1/(2*a);
t=(sqrt(4*a*c-b*b)/(2*a));
printf("x1=%.5f+%.5fi;x2=%.5f%.5fi\n",s,t,s,-t);
}
}
}
|
27
|
13,165 |
// sqart.cpp : Defines the entry point for the console application.
//
int main(int argc, char* argv[])
{
int i,n;
scanf("%d",&n);
double a[100],b[100],d[100],x1,x2;
for(i=0;i<n;i++)
{scanf("%lf%lf%lf",&a[i],&b[i],&d[i]);}
for(i=0;i<n;i++)
{
if((b[i]*b[i]-4*a[i]*d[i])<0)
{ double m,n;
m=-b[i]/(2*a[i]);
n=sqrt(4*a[i]*d[i]-b[i]*b[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
else if((b[i]*b[i]-4*a[i]*d[i])>0)
{
x1=( -b[i]+ sqrt(b[i]*b[i]-4*a[i]*d[i]))/(2*a[i]);
x2=( -b[i]- sqrt(b[i]*b[i]-4*a[i]*d[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
double k;
k=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",k);
}
}
return 0;
}
|
27
|
13,166 |
int main(){
int n;
scanf("%d",&n);
int j;
for(j=1;j<=n;j++){
double a1,b1,c1,x1,x2,m;
scanf("%lf%lf%lf",&a1,&b1,&c1);
m=b1*b1-4*a1*c1;
if(m>0){
x1 = (-b1 + sqrt(b1*b1-4*a1*c1))/(2*a1);
x2 = (-b1 - sqrt(b1*b1-4*a1*c1))/(2*a1);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
if(m==0){
x1=(-b1)/(2*a1);
printf("x1=x2=%.5f\n",x1);}
if(m<0){
double y1,y2;
y1 = (-b1)/(2*a1);
y2 = (sqrt(-m))/(2*a1);
if(b1==0.00000){
printf("x1=%.5f+%.5fi;",-y1,y2);
printf("x2=%.5f-%.5fi\n",-y1,y2);}
else{ printf("x1=%.5f+%.5fi;",y1,y2);
printf("x2=%.5f-%.5fi\n",y1,y2);}
}
}
return 0;
}
|
27
|
13,167 |
main()
{
int p,n;
double a,b,c,x1,x2,m;
scanf("%d",&n);
for(p=1;p<=n;p++)
{
scanf("%lf %lf %lf",&a,&b,&c);
m=b*b-4*a*c;
if(m>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(m==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
if(-b/(2*a)==-0.00000)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b/(2*a),sqrt(-m)/(2*a),b/(2*a),sqrt(-m)/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),sqrt(-m)/(2*a),-b/(2*a),sqrt(-m)/(2*a));
}
}
}
|
27
|
13,168 |
int main()
{
double a,b,c,d;
double e,f,g,h,j;
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
e=-b/(2*a);
f=0-e;
g=sqrt(4*a*c-b*b)/(2*a);
h=(-b+sqrt(b*b-4*a*c))/(2*a);
j=(-b-sqrt(b*b-4*a*c))/(2*a);
if(d==0.0)
printf("x1=x2=%.5lf\n",e);
if(d<0.0&&b!=0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,g,e,g);
if(d<0.0&&b==0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",f,g,f,g);
if(d>0.0)
printf("x1=%.5lf;x2=%.5lf\n",h,j);
}
return 0;
}
|
27
|
13,169 |
int main()
{
int n,i;
double a[100],b[100],c[100], det,t,x,y;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a[i-1],&b[i-1],&c[i-1]);
}
for(i=1;i<=n;i++)
{
det=b[i-1]*b[i-1]-4*a[i-1]*c[i-1];
t=-b[i-1]/(2*a[i-1]);
x=sqrt(det)/(2*a[i-1]);
y=sqrt(-det)/(2*a[i-1]);
if(det<0)
{
if(t!=0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",t,y,t,y);
else printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-t,y,-t,y);
}
else if(det>0)
printf("x1=%.5lf;x2=%.5lf\n",x+t,t-x);
else
printf("x1=x2=%.5lf\n",t);
}
}
|
27
|
13,170 |
int main(int argc, char* argv[])
{ int n,i;
scanf("%d\n",&n);
struct{
double a,b,c;
}xs[100];
for(i=0;i<n;i++){
scanf("%lf %lf %lf\n",&xs[i].a,&xs[i].b,&xs[i].c);
}
for(i=0;i<n;i++){
double a1,b1,c1;
a1=xs[i].a;
b1=xs[i].b;
c1=xs[i].c;
if((b1*b1-4*a1*c1)>0){
double x1,x2;
x1=(-b1+sqrt(b1*b1-4*a1*c1))/(2*a1);
x2=(-b1-sqrt(b1*b1-4*a1*c1))/(2*a1);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if((b1*b1-4*a1*c1)==0){
double x1,x2;
x1=x2=(-b1)/(2*a1);
printf("x1=x2=%.5lf\n",x1);
}
if((b1*b1-4*a1*c1)<0){
double t1,t2;
t1=(-b1)/(2*a1);
t2=sqrt(4*a1*c1-b1*b1)/(2*a1);
if(t1==-0.00000)
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",t2,t2);
else {
printf("x1=%.5lf+%.5lfi;",t1,t2);
printf("x2=%.5lf-%.5lfi\n",t1,t2);
}
}
}
return 0;
}
|
27
|
13,171 |
int main()
{
double a, b, c, d, x1, x2;
int i, n;
cin >> n;
for (i = 1; i <= n; i++)
{
cin >> a >> b >> c;
d = b * b - 4 * a * c;
if (fabs (d) < 1E-6)
{
x1 = -b / (2 * a);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
if (d < 0)
{
x1 = -b / (2 * a);
if (fabs (x1) < 1E-6)
x1 = fabs(x1);
x2 = sqrt(-d) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << "+" << x2 << "i;"
<< "x2=" << x1 << "-" << x2 << "i" << endl;
}
else
{
x1 = (-b + sqrt(d)) / (2 * a);
x2 = (-b - sqrt(d)) / (2 * a);
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
}
}
return 0;
}
|
27
|
13,172 |
//********************************
//*???????????? **
//*?????? 1300012713 **
//*???2013.10.11 **
//********************************
int main()
{
int n; //????n
cin >> n; //??n
double a, b, c, x1, x2, d, e; //???????????
for (int i=1; i <= n; i++) //?????????
{
cin >> a >> b >> c; //??????
if (b * b - 4 * a * c > 0 ) //????????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);//?????
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout << "x1=";//????
printf("%.5f", x1);
cout << ";x2=";
printf("%.5f\n", x2);
}
if (b * b - 4 * a * c == 0 )//????????
{
x1 = (-b)/(2*a); //???
cout << "x1=x2=";//????
printf("%.5f\n", x1);
}
if (b * b - 4 * a * c < 0 )//????????
{
d = sqrt(4*a*c-b*b)/(2*a);
e = (-b)/(2*a);
if (e ==0)
e=0;
x1 = e + d * i;//????
x2 = e - d * i;
cout << "x1=";//????
printf("%.5f", e);
cout << "+";
printf("%.5f", d);
cout << "i;x2=";
printf("%.5f", e);
cout << "-";
printf("%.5f", d);
cout << "i" << endl;
}
}
return 0;
}
|
27
|
13,173 |
int main()
{
int n,i;
double a,b,c,di;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
di=b*b-a*c*4;
if (di<0)
{
di=di*(-1);
if(b/(2*a)<0.000001&&-0.000001<b/(2*a))
{
b=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",b/(2*a),sqrt(di)/(2*a),b/(2*a),(-1)*sqrt(di)/(2*a));
}
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",(-1)*b/(2*a),sqrt(di)/(2*a),(-1)*b/(2*a),(-1)*sqrt(di)/(2*a));
di=-1;
}
if(di==0)
{
//printf("%lf\n",(abs(b/(2*a))));
if(b/(2*a)<0.000001&&-0.000001<b/(2*a))
{
b=0;
printf("x1=x2=%.5lf\n",b/(2*a));
}
printf("x1=x2=%.5lf\n",(-1)*b/(2*a));
}
if(di>0)
{
if(b/(2*a)<0.000001&&-0.000001<b/(2*a))
{
b=0;
printf("x1=%.5lf;x2=%.5lf\n",b/(2*a)+sqrt(di)/(2*a),b/(2*a)+(-1)*sqrt(di)/(2*a));
}
printf("x1=%.5lf;x2=%.5lf\n",(-1)*b/(2*a)+sqrt(di)/(2*a),(-1)*b/(2*a)+(-1)*sqrt(di)/(2*a));
}
}
}
|
27
|
13,174 |
int main(int argc, char *argv[])
{
int n,i;
double a,b,c;
scanf("%d",&n);
for(i=1;i<=n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>=0.00001)
printf("x1=%.5f;x2=%.5f",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a));
else if(b*b-4*a*c<=-0.00001&&b!=0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",-b/(2*a),sqrt(4*a*c-b*b)/(2*a),-b/(2*a),sqrt(4*a*c-b*b)/(2*a));
else if(b*b-4*a*c<=-0.00001&&b==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi",sqrt(4*a*c)/(2*a),sqrt(4*a*c)/(2*a));
else printf("x1=x2=%.5f",-b/(2*a));
if(i!=n) printf("\n");
}
return 0;
}
|
27
|
13,175 |
int main()
{
int n;
scanf("%d",&n);
int i;
double a,b,c;
double t;
double p,q;
double x1,x2;
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
t=b*b-4*a*c;
if(t>0)
{
if (b==0)
{
x1=(sqrt(t))/(2*a);
x2=(- sqrt(t))/(2*a);
}
else
{
x1=(-b+sqrt(t))/(2*a);
x2=(-b - sqrt(t))/(2*a);
}
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (t==0)
{
if(b==0)
{
x1=x2=0;
}
else x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
if (b==0)
{
p=0.00000;
}
else p=-b/(a*2);
q=sqrt(-t)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
/*????:
1."if??\else if??\else" ??
2.t==0 not t=0*/
|
27
|
13,176 |
int main()
{
int n=0;
int i=0;
double a=0;
double b=0;
double c=0;
double pan=0;
double x1=0;
double x2=0;
double y=0;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
pan=b*b-4*a*c;
if(pan>0)
{
x1=(-b + sqrt(pan))/(2*a);
x2=(-b - sqrt(pan))/(2*a);
printf("x1=%.5f",x1 );
printf(";x2=%.5f\n", x2);
}
else if(pan==0)
{
x1=(-b)/(2*a);
x2=x1;
printf("x1=x2=%.5f\n",x1 );
}
else
{
x1=(-b)/(2*a);
if(x1==0)
{
x1=-x1;
}
y=sqrt(-pan);
printf("x1=%.5f",x1 );
printf("+%.5f",y /(2*a));
printf("i;");
printf("x2=%.5f",x1 );
printf("%.5f",-(y/(2*a)));
printf("i\n" );
}
}
return 0;
}
|
27
|
13,177 |
int main()
{int i,n;
cin>>n;
double a,b,c,sum,del;
for(i=0;i<n;i++)
{cin>>a>>b>>c;
del=b*b-4*a*c;
if(del==0)
cout<<"x1=x2="<<fixed<<setprecision(5)<<-b/2/a<<endl;
if(del>0)
cout<<"x1="<<fixed<<setprecision(5)<<(-b+sqrt(del))/2/a<<";"<<"x2="<<fixed<<setprecision(5)<<(-b-sqrt(del))/2/a<<endl;
if(del<0)
{if (b!=0)
cout<<"x1="<<fixed<<setprecision(5)<<-b/2/a<<"+"<<fixed<<setprecision(5)<<sqrt(-del)/2/a<<'i'<<";""x2="<<fixed<<setprecision(5)<<-b/2/a<<"-"<<fixed<<setprecision(5)<<sqrt(-del)/2/a<<'i'<<endl;
if (b==0)
cout<<"x1="<<0.00000<<"+"<<fixed<<setprecision(5)<<sqrt(-del)/2/a<<'i'<<";"<<"x2="<<0.00000<<"-"<<fixed<<setprecision(5)<<sqrt(-del)/2/a<<'i'<<endl;}
}
return 0;}
|
27
|
13,178 |
//*4.cpp???e?? **
//*????? 1300012896 **
//*???2013.10.9 *
//********************************
int main()
{
int n, k;
double a, b, c, x1, x2, D, d, e;
cin >> n ;
for (k = 1; k <= n; k++)
{cin >> a >> b >> c;
D = b * b - 4 * a * c;
if (b != 0)
b = -b;
if (D > 0)
{x1 = (double)(b + sqrt(D))/(2 * a);
x2 = (double)(b - sqrt(D))/(2 * a);
cout << fixed;
cout << "x1=" << setprecision(5) << x1 << ";" << "x2=" << x2 << endl;}
else if (D < 0)
{d = (double)(b) / (2 * a);
e = (double)sqrt (-D) / (2 * a);
cout << "x1=" << setprecision(5) << d << "+" << e << "i"<< ";" <<"x2=" << d << "-" << e << "i"<< endl;}
else
{x1 = (double)(b + sqrt(D))/(2 * a);
cout << fixed;
cout << "x1=x2=" << setprecision(5) << x1 << endl;}
}
return 0;
}
|
27
|
13,179 |
int main() {
int n;
scanf("%d", &n);
for (int i = 0; i < n; ++i) {
double a, b, c;
scanf("%lf%lf%lf", &a, &b, &c);
double delta = b*b - 4*a*c;
double x1, x2;
if (delta > 0) {
x1 = (-b + sqrt(delta)) / (2*a);
x2 = (-b - sqrt(delta)) / (2*a);
if (x1 == 0.0)
x1 = 0.0;
if (x2 == 0.0)
x2 = 0.0;
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (delta == 0) {
x1 = -b / (2*a);
if (x1 == 0.0)
x1 = 0.0;
printf("x1=x2=%.5lf\n", x1);
}
else {
double real, imag;
real = -b / (2*a);
if (real == 0.0)
real = 0.0;
imag = sqrt(-delta) / (2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", real, imag, real, imag);
}
}
}
|
27
|
13,180 |
int main() {
int n;
cin >>n;
for (;n>0;n=n-1)
{
double a,b,c,d,x1,x2,x1re,x1im,x2re,x2im;//a,b,c are the output. d is the discriminant.
cin >>a>>b>>c;
d=b*b-4*a*c;
if (d>=0)
{
if(b!=0)//used to avoid the output of -0.00000+...
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
if (x1!=x2)
{
cout <<fixed<<setprecision(5)<<"x1="<<x1;
cout <<";";
cout <<fixed<<setprecision(5)<<"x2="<<x2<<endl;
}
else
cout <<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else//used to avoid the output of -0.00000+...
{
x1=(sqrt(d))/(2*a);
x2=(sqrt(d))/(2*a);
if (x1!=x2)
{
cout <<fixed<<setprecision(5)<<"x1="<<x1;
cout <<";";
cout <<fixed<<setprecision(5)<<"x2="<<x2<<endl;
}
else
cout <<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
}
else
{
if(b!=0)//used to avoid the output of -0.00000+...
{
x1re=-b/(2*a);
x2re=-b/(2*a);
x1im=(sqrt(-d))/(2*a);
x2im=-(sqrt(-d))/(2*a);
cout <<noshowpos<<fixed<<setprecision(5)<<"x1="<<x1re<<showpos<<x1im<<"i";//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
cout <<";";
cout <<noshowpos<<fixed<<setprecision(5)<<"x2="<<x2re<<showpos<<x2im<<"i"<<endl;//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
}
else//used to avoid the output of -0.00000+...
{
x1re=0;
x2re=0;
x1im=(sqrt(-d))/(2*a);
x2im=-(sqrt(-d))/(2*a);
cout <<noshowpos<<fixed<<setprecision(5)<<"x1="<<x1re<<showpos<<x1im<<"i";//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
cout <<";";
cout <<noshowpos<<fixed<<setprecision(5)<<"x2="<<x2re<<showpos<<x2im<<"i"<<endl;//ensure that the real part don`t have a "+" before ,while the sign of imaginary part is shown
}
}
}
return 0;
}
|
27
|
13,181 |
double f5(double x)
{
long long y;
if(x>0)
y=(x+0.000005)*100000;
else y=(x-0.000005)*100000;
x=(double)y/100000;
x=x;
return x;
}
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,delta,p,q,p1,q1,r;
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
delta=b*b-4*a*c;
q=sqrt(fabs(delta));
q1=sqrt(fabs(delta))/(2*a);
p=-b;
p1=-b/(2*a);
r=2*a;
if(q>=0.000005&&delta>0)printf("x1=%.5lf;x2=%.5f\n",f5((p+q)/r),f5((p-q)/r));
else if(delta<0)printf("x1=%.5lf+%.5fi;x2=%.5lf-%.5lfi\n",f5(p1),q1,f5(p1),q1);
else printf("x1=x2=%.5f\n",f5(p1));
}
return 0;
}
|
27
|
13,182 |
int main()
{
int n,m;
scanf("%d",&n);
double a[500],b[500],c[500],x1,x2,e;
for(m=1;m<=n;m++)
{
scanf("%lf %lf %lf",&a[m],&b[m],&c[m]);
}
for(m=1;m<=n;m++)
{
if((b[m]*b[m]-4*a[m]*c[m])==0)
{
x1=-b[m]/(2*a[m]),x2=-b[m]/(2*a[m]);
printf("x1=x2=%.5f\n",x1);
}
else if((b[m]*b[m]-4*a[m]*c[m])>0)
{
x1=(-b[m]+sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
x2=(-b[m]-sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
e=sqrt(-b[m]*b[m]+4*a[m]*c[m])/(2*a[m]);
if(b[m]==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",e,e);
else
{
x1=-b[m]/(2*a[m]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,e,x1,e);
}
}
}
return 0;
}
|
27
|
13,183 |
main()
{
int n,i=1;
double a,b,c,x1,x2,d,f,k;
scanf("%d",&n);
while(i<=n)
{
scanf("%lf %lf %lf",&a,&b,&c);
f=-b/(2*a);
if(b==0)f=0;
d=b*b-4*a*c;
if(d>0)
{
x1=f+sqrt(d)/(2*a);
x2=f-sqrt(d)/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(d==0) printf("x1=x2=%.5f\n",f);
else
{
k=sqrt(-d)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",f,k,f,k);
}
i++;
}
}
|
27
|
13,184 |
void main()
{
int i=0,n;
double a,b,c;
scanf("%d",&n);
while(i<n)
{
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0)
{
printf("x1=%.5f;x2=%.5f",(-b+sqrt(b*b-4*a*c))/(2*a),(-b-sqrt(b*b-4*a*c))/(2*a) );
}
else if(b*b-4*a*c<1e-7&&b*b-4*a*c>-1e-7)
{
printf("x1=x2=%.5f",-b/(2*a));
}
else if(b/(2*a)<1e-7&&b/(2*a)>-1e-7)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",0.0,(1/(2*a))*sqrt(4*a*c-b*b),0.0,(1/(2*a))*sqrt(4*a*c-b*b));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",-b/(2*a),(1/(2*a))*sqrt(4*a*c-b*b),-b/(2*a),(1/(2*a))*sqrt(4*a*c-b*b));
i++;
printf("\n");
}
}
|
27
|
13,185 |
int main(int argc, char* argv[])
{
int i,n;
double a,b,c,p,q;
double x1,x2,s;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%lf%lf%lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0){
x1 = (-b + sqrt(s))/(2*a);
x2 = (-b - sqrt(s))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(s==0){
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else{ if(b!=0)
{double p=sqrt(-s)/(2*a),q=-b/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q,p,q,p);
}
else
{double p=sqrt(-s)/(2*a),q=0.00000;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q,p,q,p);
}
}
}
return 0;}
|
27
|
13,186 |
int main() {
int n;
cin >> n;
double a, b, c, x1, x2;
while (n--) {
cin >> a >> b >> c;
if ((b * b - 4 * a * c) > 0) {
x1 = (0 - b) / (2 * a);
x2 = (sqrt(b * b - 4 * a * c)) / (2 * a);
printf("x1=%.5f;x2=%.5f\n", x1 + x2, x1 - x2);
} else if ((b * b - 4 * a * c) < 0) {
x1 = (0 - b) / (2 * a);
if (x1 == 0)
x1 = 0;
x2 = (sqrt(4 * a * c - b * b)) / (2 * a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", x1, x2, x1, x2);
} else {
printf("x1=x2=%.5f\n", (0 - b) / (2 * a));
}
}
return 0;
}
|
27
|
13,187 |
main()
{
int i, n;
float a,b,c;
scanf("%d",&n);
double d[n][3],x,y;
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a,&b,&c);
x=b*b-4*a*c;
if(x==0)
{
d[i][1]=d[i][2]=-b/(2*a);
d[i][3]=x;
}
else if(x>0)
{
y=sqrt(x);
d[i][1]=(-b+y)/(2*a);
d[i][2]=(-b-y)/(2*a);
d[i][3]=x;
}
else
{
y=sqrt(-x);
d[i][1]=-b/(2*a);
d[i][2]=y/(2*a);
d[i][3]=x;
}
}
for(i=0;i<n;i++)
{
if(d[i][1]==-0)
d[i][1]=0;
if(d[i][2]==-0)
d[i][2]=0;
if(d[i][3]<0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",d[i][1],d[i][2],d[i][1],d[i][2]);
else if(d[i][3]>0)
printf("x1=%.5f;x2=%.5f\n",d[i][1],d[i][2]);
else
printf("x1=x2=%.5f\n",d[i][1]);
}
}
|
27
|
13,188 |
int main()
{
int n,i;
double a,b,c,x1,x2;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
if((b*b-4*a*c)>0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
continue;
}
if((b*b-4*a*c)==0)
{
x1=x2=(-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
continue;
}
if((b*b-4*a*c)<0)
{
x1=(-b)/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
if(x1==0)
x1=0;
printf("x1=%.5f""+""%.5fi;x2=%.5f""-""%.5fi\n",x1,x2,x1,x2);
continue;
}
}
return 0;
}
|
27
|
13,189 |
int main()
{
int n;
int i;
scanf("%d",&n);
double a[100],b[100],c[100],x1[100],x2[100],re[100],im[100];
double dlta[100];
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
dlta[i]=b[i]*b[i]-4*a[i]*c[i];
if(dlta[i]==0)
{
x1[i]=-b[i]/a[i]/2;
printf("x1=x2=%.5lf\n",x1[i]);
}
else if(dlta[i]<0)
{
im[i]=sqrt(0-dlta[i])/2/a[i];
re[i]=-b[i]/a[i]/2;
if(re[i]==0)
{
re[i]=0;
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",re[i],im[i],re[i],im[i]);
}
else
{
x1[i]=(-b[i]+sqrt(dlta[i]))/2/a[i];
x2[i]=(-b[i]-sqrt(dlta[i]))/2/a[i];
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
}
}
|
27
|
13,190 |
/*
* hw20130925(7.cpp
*
* Created on: 2013-9-28
* Author: KyLin
*/
int main ()
{
int n1; //???????
cin>>n1;
const int n=n1;
int t;
double deta;
double a[n],b[n],c[n]; //a,b,c????x1?x2???real????imag???,deta????
double x1[n],x2[n];
double real[n],imag[n];
for (t=0;t<n;++t)
a[t]=b[t]=c[t]=x1[t]=x2[t]=real[t]=imag[t]=0; //??????
for (t=0;t<n;++t)
cin>>a[t]>>b[t]>>c[t];
for (t=0;t<n;++t)
{
deta=b[t]*b[t]-4*a[t]*c[t];
if (deta>0) //????deta??????
{
x1[t]=(-b[t]+sqrt(deta))/(2*a[t]);
x2[t]=(-b[t]-sqrt(deta))/(2*a[t]);
cout<<fixed<<setprecision(5)<<"x1="<<x1[t]<<";x2="<<x2[t]<<endl;
}
if (deta==0)
{
x1[t]=(-b[t])/(2*a[t]);
x2[t]=x1[t];
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1[t]<<endl;
}
if (deta<0)
{
real[t]=(-b[t])/(2*a[t]);
imag[t]=sqrt(abs(deta))/(2*a[t]);
if (real[t]==0)
{
cout<<fixed<<setprecision(5)<<"x1="<<abs(real[t])<<"+"<<imag[t]<<"i;x2="<<abs(real[t])<<-imag[t]<<"i"<<endl;
}
else
cout<<fixed<<setprecision(5)<<"x1="<<real[t]<<"+"<<imag[t]<<"i;x2="<<real[t]<<-imag[t]<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,191 |
/**
* @file 1.cpp
* @author ??? 1100013230
* @date 2011-9-16
* @descrption
* ???????????????
*/
int main()
{
int n,k;
cin>>k; //??????????k
for(n=1;n<=k;n=n+1)
{
float a,b,c; //a?b?c?????????????????????
double x1,x2,x11,x22; //x1?x2????????????x11,x22??????????
cin>>a>>b>>c;
if ((b*b-4*a*c)>0) //??b*b-4*a*c?0???
{
x1 = (0-b+sqrt(b*b-4*a*c))/(2*a);
x2 = (0-b-sqrt(b*b-4*a*c))/(2*a); //????
cout<<fixed;
cout<<"x1="<<setprecision(5)<<x1<<";"<<"x2="<<setprecision(5)<<x2<<endl; //?????????????
}
else
{
if ((b*b-4*a*c)<0) //??b*b-4*a*c?0???
{
x1=x2=(0-b)/(2*a);
x11=sqrt(-b*b+4*a*c)/(2*a);
x22=-sqrt(-b*b+4*a*c)/(2*a); //????
cout<<fixed;
cout<<"x1="<<setprecision(5)<<x1<<"+"<<setprecision(5)<<x11<<"i"<<";"<<"x2="<<setprecision(5)<<x2<<setprecision(5)<<x22<<"i"<<endl;
} //?????????????
else
{
x1=x2= (0-b + sqrt(b*b-4*a*c))/(2*a); //????
cout<<fixed;
cout<<"x1=x2="<<setprecision(5)<<x1<<endl; //?????????????
}
}
}
return 0;
}
|
27
|
13,192 |
//============================================================================
// Name : 6.cpp
// Author :
// Version :
// Copyright : Your copyright notice
// Description :
//============================================================================
int main() {
int n=0;
cin>>n;
double a[1000],b[1000],c[1000];
double d[1000];
for (int j=0;j<n;j++)
{
cin>>a[j]>>b[j]>>c[j];
d[j]=b[j]*b[j]-4*a[j]*c[j];
}
for (int i=0;i<n;i++){
if (d[i]>0)
{
cout<<"x1=";
printf("%.5f",(-b[i]+sqrt(d[i]))/(2*a[i]));
cout<<";"<<"x2=";printf("%.5f",(-b[i]-sqrt(d[i]))/(2*a[i]));
cout<<endl;
}
else if (d[i]==0)
{
if (b[i]==0)
{
cout<<"x1=x2=0.00000";
}
else
{
cout<<"x1=x2=";
printf("%.5f",(-b[i])/(2*a[i]));
cout<<endl;
}
}
else
{
if (b[i]==0)
{cout<<"x1=0.00000+";printf("%.5f",sqrt(c[i]/a[i]));cout<<"i;x2=0.00000";printf("%.5f",-sqrt(c[i]/a[i]));cout<<"i"<<endl;}
if (b[i]!=0)
{cout<<"x1=";printf("%.5f",(-b[i])/(2*a[i]));cout<<"+";printf("%.5f",(sqrt(-d[i]))/(2*a[i]));cout<<"i"<<";"<<"x2=";printf("%.5f",(-b[i])/(2*a[i]));cout<<"-";printf("%.5f",(sqrt(-d[i]))/(2*a[i]));cout<<"i"<<endl;}
}}
return 0;
}
|
27
|
13,193 |
int main()
{
int n, i;
scanf("%d", &n);
double a, b, c, x1, x2, p;
for(i=1;i<=n;i++){
scanf("%lf %lf %lf", &a, &b, &c);
p=b*b-4*a*c;
if(p>0){
x1=(-b+sqrt(p))/(2*a);
x2=(-b-sqrt(p))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(p==0){
printf("x1=x2=%.5lf\n", -b/(2*a));
}
else{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", -b/(2*a), sqrt(-p)/(2*a), -b/(2*a), sqrt(-p)/(2*a));
}
}
}
|
27
|
13,194 |
char *solve_x(int xn, float a, float b, float c)
{
double in_sqrt = b * b - 4 * a * c;
double x;
char *res;
double real, imaginary;
res = (char *)malloc(100 * sizeof(char));
if (in_sqrt >= 0) {
if (xn == 1) {
x = (-b + sqrt(in_sqrt)) / (2 * a);
} else {
x = (-b - sqrt(in_sqrt)) / (2 * a);
}
sprintf(res, "%.05f", x);
if (!strcmp(res, "-0.00000")) {
res++;
}
} else {
real = -b / (2 * a);
imaginary = sqrt(-in_sqrt) / (2 * a);
sprintf(res, "%.05f", real);
if (!strcmp(res, "-0.00000")) {
res++;
}
if (xn == 1) {
sprintf(res + strlen(res), "+%.05fi", imaginary);
} else {
sprintf(res + strlen(res), "-%.05fi", imaginary);
}
}
return res;
}
int main()
{
int n;
double a, b, c;
char *x1, *x2;
scanf("%d", &n);
while (n--) {
scanf("%lf %lf %lf", &a, &b, &c);
x1 = solve_x(1, a, b, c);
x2 = solve_x(2, a, b, c);
if (!strcmp(x1, x2)) {
printf("x1=x2=%s\n", x1);
} else {
printf("x1=%s;x2=%s\n", x1, x2);
}
}
return 0;
}
|
27
|
13,195 |
//************************
//**?????????************
//**??? 1300062709*****
//**2013.10.9*************
//************************
int main()
{
double x1, x2;
double x1i,x2i;
double a, b, c, delta, squar;
int n,i;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
delta=b*b-4*a*c;
squar=sqrt(delta);
if ( delta > 0 )
{
x1=(-b+squar)/(2*a);
x2=(-b-squar)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
else if(fabs(delta)<=10E-5)
{
x1=(-b+squar)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
x1=-b/(2*a) ;
x1i=sqrt(4*a*c-b*b)/(2*a);
x2i=-sqrt(4*a*c-b*b)/(2*a);
if(fabs(x1)<=10E-5)
x1=0;
cout<<fixed<<setprecision(5)<<"x1="<<x1<<"+"<<x1i<<"i;x2="<<x1<<x2i<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,196 |
int main()
{
int num;
float a, b, c;
double x1, x2, tmp, m, n;
int i;
cin >> num;
for(i = 0; i < num; i ++)
{
cin >> a >> b >> c;
tmp = b * b - 4 * a * c;
if (tmp > 0)
{
x1 = ( - b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2 = ( - b - sqrt(b * b - 4 * a * c)) / (2 * a);
cout << "x1=" << fixed << setprecision(5) << x1;
cout << ";x2=" << fixed << setprecision(5) << x2 << endl;
}
else if(tmp == 0)
{
x1 = ( - b ) / (2 * a);
cout << "x1=x2=" << fixed << setprecision(5) << x1 << endl;
}
else
{
if (b != 0)
m = ( - b) / (2 * a);
else
m = b / (2 * a);
n = (sqrt( - tmp)) / (2 * a);
cout << "x1=" << fixed << setprecision(5) << m;
cout << "+" << fixed << setprecision(5) << n << "i;";
cout << "x2=" << fixed << setprecision(5) << m;
cout << "-" << fixed << setprecision(5) << n << "i";
cout << endl;
}
}
return 0;
}
|
27
|
13,197 |
double fangcheng(double a,double b,double c)
{
double d,x1,x2,m,n;
d=b*b-4*a*c;
if(d>0)
{
x1=(-b+sqrt(d))/(2*a);
x2=(-b-sqrt(d))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (d==0)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else if (d<0)
{
m=-b/(2*a);
n=sqrt(-d)/(2*a);
if(m==-0)
{
m=0;
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
return 0;
}
int main()
{
int n;
scanf("%d",&n);
while(n>0)
{
double a,b,c;
scanf("%lf%lf%lf",&a,&b,&c);
n=n-1;
fangcheng (a,b,c);
}
return 0;
}
|
27
|
13,198 |
int main()
{
int i,n;
double d,p,q,x1,x2,a,b,c;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=b*b-4*a*c;
q=(0-b)/(2*a);
if (p==0)
{
x1=q;
printf("x1=x2=%.5lf\n",x1);
}
else
{
if (p>0)
{
x1=sqrt(p)/(2*a)+q;
x2=-sqrt(p)/(2*a)+q;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
d=sqrt(-p)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",q,d,q,d);
}
}
}
}
|
27
|
13,199 |
main()
{
int i,n;
scanf("%d",&n);
double a[n],b,c,x[n],y[n];
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b,&c);
y[i]=(b*b-4*a[i]*c);
if(b==0)
x[i]=(b)/(2*a[i]);
else
x[i]=(-b)/(2*a[i]);
}
for(i=0;i<n;i++)
{
if(y[i]==0)
printf("x1=x2=%.5f\n",x[i]);
else if (y[i]>0)
{
y[i]=sqrt(y[i])/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x[i]+y[i],x[i]-y[i]);
}
else
{
y[i]=sqrt(-y[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x[i],y[i],x[i],y[i]);
}
}
}
|
27
|
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