id
int32 0
32.5k
| code
stringlengths 95
8.4k
| label
stringclasses 65
values |
|---|---|---|
13,000 |
/****************
??cpp1
???
2013/10/10
??(8.3) ????????? (1051)
***************/
int main()
{
int i, n;
double a, b, c, d, x1, x2;
cin >> n;
for (i = 1; i <= n; i++)//?1?n????
{
cin >> a >> b >> c;
d = b * b - 4 * a *c;// ????
if (d == 0)//????????
{
x1 = -b / (2*a);
cout << setprecision(5) << fixed << "x1=x2="<<x1 << endl;
}
else if ( d > 0)//?????????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout << setprecision(5) << fixed << "x1=" << x1 << ";" << "x2=" << x2 <<endl;
}
else //?????????
{
if ( b == 0 )
{
cout << setprecision(5) << fixed << "x1=" << ( b / (2 * a)) << "+" << sqrt(4*a*c-b*b)/(2*a)<< "i;x2=" << (b / (2 * a)) << "-" << sqrt(4*a*c-b*b) / (2*a) << "i"<< endl;
}
else
cout << setprecision(5) << fixed << "x1=" << ( -b / (2 * a)) << "+" << sqrt(4*a*c-b*b)/(2*a)<< "i;x2=" << (-b / (2 * a)) << "-" << sqrt(4*a*c-b*b) / (2*a) << "i"<< endl;
}
}
return 0;
}
|
27
|
13,001 |
void main()
{
int n,i=1;
double a[100],b[100],c[100],x1,x2,realpart,imagpart,disc;
scanf("%d",&n);
while (i<=n)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
i+=1;
}
i=1;
while (i<=n)
{
disc=b[i]*b[i]-4*a[i]*c[i];
if (disc>0)
{
x1=(-b[i] + sqrt(disc))/(2*a[i]) , x2=(-b[i] - sqrt(disc))/(2*a[i]);
if ( fabs(x1)<1e-5) x1=0;
if ( fabs(x2)<1e-5) x2=0;
printf ("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
if (disc==0)
{
x1=(-b[i])/(2*a[i]);
if(fabs(x1)<1e-5) x1=0;
printf ("x1=x2=%.5f\n",x1);
}
else
{
realpart=(-b[i])/(2*a[i]);
imagpart=sqrt(-disc)/(2*a[i]);
if ( fabs(realpart)<1e-5) realpart=0;
if ( fabs(imagpart)<1e-5) imagpart=0;
printf ("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", realpart,imagpart, realpart,imagpart);
}
}
i+=1;
}
}
|
27
|
13,002 |
int main()
{
int n,i;
double a,b,c,d,e;
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);
if(d>0)
{
printf("x1=%.5lf;x2=%.5lf\n",(e+(sqrt(d)/(2*a))),(e-(sqrt(d)/(2*a))));
}
else if(d<0)
{
if(e!=0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,(sqrt(-d)/(2*a)),e,(sqrt(-d)/(2*a)));
}
else
{printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",(sqrt(-d)/(2*a)),(sqrt(-d)/(2*a)));}
}
else
{
if(e==0){
printf("x1=x2=0.00000");
}
else
{
printf("x1=x2=%.5lf\n",e);
}
}
}
return 0;
}
|
27
|
13,003 |
int main(int argc, char* argv[])
{
int n,i;
double a,b,c,d,e;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if (b==0)
e=0;
else
e=(-b)/(2*a);
if(d>0)
printf("x1=%.5lf;x2=%.5lf\n",e+sqrt(d)/(2*a),e-sqrt(d)/(2*a));
else if (d<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", e,sqrt(-d)/(2*a),e,sqrt(-d)/(2*a));
else if(d==0)
printf("x1=x2=%.5lf\n",e);
}
return 0;
}
|
27
|
13,004 |
/**
* @file homework.cpp
* @author ???
* @date 2011-09-27
* @description
* ??????: ?????????
*/
int main()
{
int n,k;double a,b,c,x,y; // ???????a,b,c??????x,y
cin >> n; // n????????
for(k=0;k<n;k++) // ?????
{
cin>>a>>b>>c; // ?????
if(b * b - 4 * a * c>0)
{
x = (- b + sqrt(b * b - 4 * a * c))/(2 * a);
y = (- b - sqrt(b * b - 4 * a * c))/(2 * a); // ?????????????
if(x==-0.00000) x=0.00000; if(y==-0.00000) y=0.00000; // ?????-0.00000???
cout<<fixed<<setprecision(5)<<"x1="<<x<<";x2="<<y<<endl;
}
else if(b * b - 4 * a * c == 0)
{
x = (- b)/(2 * a); // ?????
if(x == -0.00000) x = 0.00000; if(y == -0.00000) y = 0.00000;
cout<<fixed<<setprecision(5)<<"x1=x2="<<x<<endl;
}
else
{
x = (- b)/(2 * a);y = (sqrt(4 * a * c - b * b))/(2 * a); // ?????
if(x == -0.00000) x = 0.00000; if(y == -0.00000) y = 0.00000;
cout<<fixed<<setprecision(5)<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,005 |
main()
{
int n,i;
double a[99],b[99],c[99],x1,x2,d;
scanf("%d",&n);
i=1;
while(i<=n)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
i=i+1;
}
{
i=1;
while (i<=n)
{ 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);
}
}
i=i+1;
}
}
}
|
27
|
13,006 |
int main()
{
double a, b, c,d,g,x1,x2;
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=(-b)/(2*a) ;
g=(sqrt(fabs(4*a*c-b*b)))/(2*a);
if((b*b-4*a*c)>0)
{
x1=d+g;
x2=d-g;
printf("x1=%.5lf;",x1);
printf("x2=%.5lf\n",x2);
}
else if((b*b-4*a*c)==0)
{
x1=x2=d;
printf("x1=x2=%.5lf\n",d);
}
else if((4*a*c-b*b)>0)
{
printf("x1=%.5lf+%.5lfi;",d,g);
printf("x2=%.5lf-%.5lfi\n",d,g);
}
}
return 0;
}
|
27
|
13,007 |
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){
double c1,d1,d2;
c1=(double)(-b/(a*2));
d1=sqrt(4*a*c-b*b)/(2*a);
d2=-d1;
if(c1==-0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",-c1,d1,-c1,d2);}
else {printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",c1,d1,c1,d2);}}}
return 0;
}
|
27
|
13,008 |
float a[100],b[100],c[100];
int main()
{
double x1,x2,p,q,s;
int n,i;
cin>>n;
cout<<endl;
for(i=1;i<=n;i++)
{
cin>>a[i]>>b[i]>>c[i];
cout<<endl;
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]);
if(x1==x2)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1;
}
if(x1!=x2)
{
cout<<fixed<<setprecision(5)<<"x1="<<x1<<';'<<"x2="<<x2;
}
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
p=-b[i]/(2*a[i]);q=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
if(p!=0)
cout<<fixed<<setprecision(5)<<"x1="<<p<<"+"<<q<<"i"<<";"<<"x2="<<p<<-q<<"i";
if(p==0)
cout<<fixed<<setprecision(5)<<"x1=0.00000"<<"+"<<q<<"i"<<";"<<"x2=0.00000"<<-q<<"i";
}
}
return 0;
}
|
27
|
13,009 |
int main()
{
int n;
scanf("%d",&n);
double x1,x2,p[50],s[50][3];
int i,k;
for (k=0;k<n;k++)
{
scanf("%lf%lf%lf",&s[k][0],&s[k][1],&s[k][2]);
double a,b,c;
a=s[k][0];
b=s[k][1];
c=s[k][2];
p[k]=b*b-4*a*c;
}
for (i=0;i<n;i++)
{
double a,b,c;
a=s[i][0];
b=s[i][1];
c=s[i][2];
p[i]=b*b-4*a*c;
if(p[i]>0)
{
x1=(-b+sqrt(p[i]))/(2*a);
x2=(-b-sqrt(p[i]))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if (p[i]==0)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else if (p[i]<0)
{
double q1,q2;
q1=-b/(2*a);
q2=sqrt(-p[i])/(2*a);
if(b==0)
{
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",q2,q2);
}
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q1,q2,q1,q2);
}
}
return 0;
}
|
27
|
13,010 |
int main()
{
int n,i;
float a[1000],b[1000],c[1000];
float delta,p,q,x1,x2;
scanf("%d",&n);
for(i=0;i<=n-1;i++)
scanf("%f %f %f",&a[i],&b[i],&c[i]);
for(i=0;i<=n-1;i++)
{
delta=b[i]*b[i]-4*a[i]*c[i];
p=-b[i]/(2*a[i]);
if(delta==0)
{
printf("x1=x2=%.5f\n",p);
}
else
{
if(delta>0)
{
q=sqrt(delta)/(2*a[i]);
x1=p+q;
x2=p-q;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
delta=-delta;
q=sqrt(delta)/(2*a[i]);
if(b[i]==0)
{
p=fabs(p);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
}
}
return 0;
}
|
27
|
13,011 |
int qj( double a,double b,double c)
{
double x1,x2,e,f,g;
double d;
d=b*b-4*a*c;
if (d>0)
{
e=(-b + sqrt(d))/(2*a);
f=(-b -sqrt(d))/(2*a);
if(e==0)
e=0;
printf("x1=%.5f;x2=%.5f\n",e,f);
}
else if (d==0)
{
e=(-b)/(2*a);
if(e==0)
e=0;
printf("x1=x2=%.5f\n",e);
}
else
{
e=(-b)/(2*a);
f=sqrt(-d)/(2*a);
if(e==0)
e=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
main()
{
double a,b,c;
int n;
int i;
i=0;
scanf("%d\n",&n);
while(i<n)
{
scanf("%lf%lf%lf",&a,&b,&c);
qj(a,b,c);
i++;
}
}
|
27
|
13,012 |
int main()
{
int i,n;
float a,b,c;
double x1,x2,d,e;
scanf("%d",&n);
for (i=1;i<=n;i++)
{scanf("%f %f %f",&a,&b,&c);
d=b*b-4*a*c;
if (b==0)
{if(d>0)
{x1 = (sqrt(b*b-4*a*c))/(2*a);
x2 = (- sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{
if(d==0)
{
x1=(sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{e=sqrt(-d)/(-2*a);
if(e>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,e,b,e);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,-e,b,-e);
}
}
}
else{
if(d>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(d==0)
{
x1=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{e=sqrt(-d)/(-2*a);
if(e>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),e,-b/(2*a),e);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a),-e,-b/(2*a),-e);
}
}
}
}
}
|
27
|
13,013 |
int main()
{
double a,b,c,delta,m,n;
int i = 0;
scanf("%d",&i);
while(i--)
{
scanf("%lf%lf%lf",&a,&b,&c);
delta=b*b-4*a*c;
if(delta<0)
{
m=-b/2/a;
n=sqrt(-delta)/2/a;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
else
if(delta==0)
{
m=-b/2/a;
printf("x1=x2=%.5lf\n",m);
}
else
{
m=-b/2/a;
n=sqrt(delta)/2/a;
printf("x1=%.5lf;x2=%.5lf\n",m+n,m-n);
}
}
return 0;
}
|
27
|
13,014 |
void main()
{
int n,i=1;
float a,b,c;
double x1,x2;
scanf("%d",&n);
while(i<=n)
{
scanf("%f %f %f",&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);
}
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=x2=%.5f\n",x1);
}
if ((b*b-4*a*c)<0)
{
x1=-b/(2*a);
x2=(sqrt(-b*b+4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
i++;
}
}
|
27
|
13,015 |
int main()
{
int n;
scanf("%d", &n);
while(n--){
double a, b, c;
scanf("%lf%lf%lf", &a, &b, &c);
double d = b*b-4*a*c;
double mid = -b/(2*a);
double dif = sqrt(fabs(d))/(2*a);
if(mid == 0)mid = 0;
if(d > 0)printf("x1=%.5f;x2=%.5f\n", mid+dif, mid-dif);
if(d == 0)printf("x1=x2=%.5f\n", mid);
if(d < 0)printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", mid, fabs(dif), mid, fabs(dif));
}
return 0;
}
|
27
|
13,016 |
int main()
{
int n,i;
cin >> n;
for(i=0;i<n;i++)
{
double a[100], b[100], c[100], d, x1 , x2, f, g;
cin >> a[i] >> b[i]>> c[i];
d=b[i]*b[i]-4*a[i]*c[i];
if(d>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]) ;
cout << fixed << setprecision(5) << "x1=" << x1 << ";" << "x2=" << x2 << endl;
}
if(d==0)
{
x1=x2=-b[i]/(2*a[i]);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
if(d<0)
{
f=0-(b[i]/(2*a[i]));
g=sqrt(-d)/(2*a[i]);
cout << fixed << setprecision(5) << "x1=" << f<<"+"<< g<<"i"<<";"<<"x2=" << f <<"-"<< g<<"i" <<endl;
}
}
return 0;
}
|
27
|
13,017 |
int main ()
{
int n,i;
float a,b,c;
double x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a,&b,&c);
if((b*b-4*a*c)>0)
{
x1=((-1)*b+sqrt(b*b-4*a*c))/(2*a);
x2=((-1)*b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if((b*b-4*a*c)==0)
{
x1=((-1)*b+sqrt(b*b-4*a*c))/(2*a);
x2=((-1)*b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if((b*b-4*a*c)<0)
{
x1=(-1*b)/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
return 0;
}
|
27
|
13,018 |
/*
* ?????????????.cpp
* ?????1200012840
* ?????2012-10-19
* ???????
x1 = (-b + sqrt(b*b-4*a*c))/(2*a)
x2 = (-b - sqrt(b*b-4*a*c))/(2*a)
??????? ax2 + bx + c = 0 ?????a???0?
*/
int main()
{
int i,n;//????
double a,b,c,x1,x2;//????
cin>>n;//??????
for(i=1;i<=n;i++)//??for??
{
cin>>a>>b>>c;//??????
if(b*b-4*a*c>0)//??delta?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);//?????x1,x2??
}
if(b*b-4*a*c==0)//??delta?0???
{
if(b!=0)//??b??
x1=-b/(2*a);
else x1=0;
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);//?????x1,x2??
}
if(b*b-4*a*c<0)//??delta?0???
{
if(b!=0)//??b??
x1=-b/(2*a);
else x1=0;
x2=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);//?????x1,x2??
}
}
return 0;//????
}
|
27
|
13,019 |
main()
{
int n,i;
double a,b,c,p,q,d;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4.0*a*c;
if(d>=0)
{
q=sqrt(d)/(2.0*a);
p=-b/(2.0*a);
if(q-0>=0.00001) printf("x1=%.5f;x2=%.5f\n",p+q,p-q);
else
if(p<0.00001&&p>-0.00001) printf("x1=x2=0.00000\n");
else printf("x1=x2=%.5f\n",p);
}
else
{
q=sqrt(-d)/(2.0*a);
p=-b/(2.0*a);
if(p<0.00001&&p>-0.00001) printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",q,q);
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
}
}
|
27
|
13,020 |
main()
{
int n,j=0,i;
double a,b,c,x1,x2,p,q,k;
scanf("%d",&n);
while(j<n)
{j++;
scanf("%lf %lf %lf",&a,&b,&c);
p=-b/(2.0*a);
q=sqrt(b*b-4.0*a*c);
if(b*b-4.0*a*c!=0.0)
{
if(b*b-4.0*a*c>0.0)
{
x1 = (-b + sqrt(b*b-4.0*a*c))/(2.0*a);
x2 = (-b - sqrt(b*b-4.0*a*c))/(2.0*a);
if(q-0>=0.00001)
printf("x1=%.5f;x2=%.5f\n",x1,x2);
else
{
if(p<0.00001&&p>-0.00001) printf("x1=x2=0.00000");
else printf("x1=x2=%.5f\n",p);
}
}
else
{
k=(sqrt(4.0*a*c-b*b))/(2*a);
if(q-0>=0.00001)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,k,p,k);
else
if(p<0.00001&&p>-0.00001) printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",k,k);
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,k,p,k);
}
}
else
{
x1=x2=-b/(2.0*a);
if(p<0.00001&&p>-0.00001) printf("x1=x2=0.00000");
else printf("x1=x2=%.5f\n",x1,x2);
}
}
}
|
27
|
13,021 |
//By Dr.Z
int solve(float a,float b,float c); //????
int main()
{
cout<<fixed<<setprecision(5);
int n,i,j; //????
cin>>n; //?????n
float S[n][3]; //????????
for(i=0;i<=(n-1);i++) //??????
{
for(j=0;j<=2;j++) cin>>S[i][j];
}
for(i=0;i<=(n-1);i++)
{
solve(S[i][0],S[i][1],S[i][2]);
}
return 0;
}
int solve(float a,float b,float c)
{
float d=(b*b-4*a*c); //?????delta
float x,y; //??????
if(d>0) //?????
{
d=sqrt(d);
x=-b/a/2;
y=d/a/2;
cout<<"x1="<<(x+y)<<";x2="<<(x-y)<<endl;
}
else if(d==0) //?????
{
cout<<"x1=x2="<<(-b/a/2)<<endl;
}
else //?????
{
d=sqrt(-d);
x=-b/a/2;
if(x==0) x=abs(x);
y=abs(d/a/2);
cout<<"x1="<<x<<"+"<<y<<"i;x2="<<x<<"-"<<y<<"i"<<endl;
}
return 0;
}
|
27
|
13,022 |
int main()
{
int n,i;
double a ,b ,c;
cin>>n;
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
if(sqrt(b*b-4*a*c)>0)
cout<<fixed<<setprecision(5)<<"x1="<<(-b+1-1 + sqrt(b*b-4*a*c))/(2*a)<<";x2="<<(-b+1-1- sqrt(b*b-4*a*c))/(2*a)<<endl;
else if(sqrt(b*b-4*a*c)==0)
cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b +1-1+ sqrt(b*b-4*a*c))/(2*a)<<endl;
else
cout<<fixed<<setprecision(5)<<"x1="<<(-b+1-1)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i;x2="<<(-b+1-1)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
return 0;
}
|
27
|
13,023 |
int main(){
double a,b,c;
int n;
cin>>n;
for(int i=0;i<n;i++){
cin>>a>>b>>c;
if(b!=0){
if(b*b-4.0*a*c==0){
printf("x1=x2=%.5lf\n",(double)(-b/(2*a)));
}else{
if(b*b-4.0*a*c>0) printf("x1=%.5lf;x2=%.5lf\n",(-1.0*b+sqrt(b*b-4*a*c))/(2.0*a),(-1.0*b-sqrt(b*b-4*a*c))/(2.0*a));
else printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-1.0*b/(2.0*a),sqrt(abs(b*b-4*a*c))/(2.0*a),-1.0*b/(2.0*a),sqrt(abs(b*b-4*a*c))/(2.0*a));
}
}else{
if(b*b-4.0*a*c==0){
printf("x1=x2=%.5lf\n",(double)0.00000);
}else{
if(b*b-4.0*a*c>0) printf("x1=%.5lf;x2=%.5lf\n",(sqrt(b*b-4*a*c))/(2.0*a),(sqrt(b*b-4*a*c))/(2.0*a));
else printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",sqrt(abs(b*b-4*a*c))/(2.0*a),sqrt(abs(b*b-4*a*c))/(2.0*a));
}
}
}
return 0;
}
|
27
|
13,024 |
void main()
{
int n,i;
float a,b,c,r,s,x1;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%f %f %f",&a,&b,&c);
r=(b*b-4*a*c);
s=-(b)/(2*a);
if(fabs(s)<0.00001) s=0;
x1=(-b+sqrt(r))/(2*a);
if(fabs(x1)<0.00001) x1=0;
if(r>0.00001) printf("x1=%.5f;x2=%.5f",x1,(-b-sqrt(r))/(2*a));
else if(fabs(r)<0.00001) printf("x1=x2=%.5f",s);
else if(a>0) printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",s,(sqrt(-r))/(2*a),s,(sqrt(-r))/(2*a));
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",s,-(sqrt(-r))/(2*a),s,-(sqrt(-r))/(2*a));
printf("\n");}
}
|
27
|
13,025 |
int main()
{
int n;
scanf("%d",&n);
int i;
double a,b,c;
for (i=0;i<n;i++)
{scanf("%lf%lf%lf",&a,&b,&c);
double x1,x2;
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;",x1);
printf("x2=%.5lf\n",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)
{x1=(sqrt(4*a*c-b*b))/(2*a);
x2=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5lf+%.5lfi;",-b/(2*a),x1);
printf("x2=%.5lf-%.5lfi\n",-b/(2*a),x2);}
}
return 0;
}
|
27
|
13,026 |
//********************************
//*???6.cpp **
//*????????????**
//*????? 1300012844 **
//*???2013.10.9 **
//********************************
int main()
{
int n; //????????n
double x1, x2; //?????x1?x2
double a, b, c, delta; //???????a?b?c????delta
cin >> n; //??n
for ( int i = 0; i < n; i++)
{
cin >> a >> b >> c; //????a?b?c
delta = b * b - 4 * a * c; //?????delta
if ( delta > 0 ) //??delta??????????
{ //??????x1,x2????0??-0?????
x1 = 0 + ( -b + sqrt(delta) ) / ( 2 * a );
x2 = 0 + ( -b - sqrt(delta) ) / ( 2 * a );
cout <<fixed << setprecision(5);
cout << "x1=" << x1 << ";x2=" << x2 << endl; //??x1?x2
}
else if ( delta < 0 ) //??delta??????????
{
x1 = 0 + ( - b ) / (2 * a); //x1????
x2 = fabs( sqrt(-delta) / (2 * a) ); //x2????
cout << fixed << setprecision(5);
cout << "x1=" << x1 << "+" << x2 << "i;";
cout << "x2=" << x1 << "-" << x2 << "i" << endl; //??x1?x2
}
else
{
x1 = 0 + ( - b ) / (2 * a); //?????????
cout << fixed << setprecision(5);
cout << "x1=x2=" << x1 << endl; //??x1?x2
}
}
return 0;
}
|
27
|
13,027 |
int main(int argc, char* argv[])
{
int i,j;
double a,b,c;
double m,n,x1,x2,d;
scanf("%d",&j);
for(i=0;i<j;i++){
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if (d==0){
m=-b/(2*a);
n=sqrt(d);
x1=x2=m;
printf("x1=x2=%.5lf\n",m);
}
else if (d>0){
m=-b/(2*a);
n=sqrt(d)/(2*a);
x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else{
m=-b/(2*a);
n=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5lf+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
}
return 0;
}
|
27
|
13,028 |
int main()
{ int n,i,j;
double x1,x2,s[100][3],a,b,c;
scanf("%d",&n);
for(i=0;i<n;i++)
{ for(j=0;j<3;j++)
scanf("%lf",&s[i][j]);
}
for(i=0;i<n;i++)
{ a=s[i][0];
b=s[i][1];
c=s[i][2];
if(b*b>=4*a*c)
{ 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=%.5lf\n",x1);
else
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{ x1=(-b)/(2*a); if(x1==0) x1=0;
x2 =sqrt(4*a*c-b*b)/(2*a);
x2=fabs(x2);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
return 0;
}
|
27
|
13,029 |
int main(int argc, char* argv[])
{
float a[50],b[50],c[50];
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%f %f %f",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++) {
if(a[i]!=0){
double delta,m,n,x1,x2;
delta=b[i]*b[i]-4*a[i]*c[i];
if (b[i]==0)
m=-0.00000;
else m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(2*a[i]);
if (delta==0)
{ printf("x1=x2=%.5lf\n",m);
}
else if(delta>0)
{ x1=m+n;
x2=m-n;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else{
printf("x1=%.5lf+%.5fi;",m,n);
printf("x2=%.5lf-%.5fi\n",m,n);
}
}
}
return 0;
}
|
27
|
13,030 |
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int i=0;
do{
double a,b,c;
scanf("%lf%lf%lf",&a,&b,&c);
double x1,x2;
if(b*b-4*a*c>0)
{{if(b!=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=%.5f\n",x1,x2);}}
{if(b==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=%.5f\n",x1,x2);}}}
if(b*b-4*a*c==0)
{{if(b!=0)
{x1=x2=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);}}
{if(b==0)
{x1=x2=(-b + sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5lf\n",x1);}}}
if(b*b-4*a*c<0)
{{if(b!=0)
{double e,f;
e=sqrt(4*a*c-b*b)/(2*a);
f=sqrt(4*a*c-b*b)/(2*a);
x1=-b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,e,x1,f);}}
{if(b==0)
{double e,f;
e=sqrt(4*a*c-b*b)/(2*a);
f=sqrt(4*a*c-b*b)/(2*a);
x1=b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,e,x1,f);}}}
i++;
}while(i<n);
return 0;
}
|
27
|
13,031 |
int main()
{
int j=1,n,i;
float a,b,c;
double x1,x2,t,p,q;
cin>>n;
while(j<=n)
{
cin>>a>>b>>c;
t=b*b-4*a*c;
if(t>0)
{
x1=(0-b+sqrt(t))/(2*a);
x2=(0-b-sqrt(t))/(2*a);
//cout<<"x1="<<printf("%.5f", x1)<<";"<<"x2="<<printf("%.5f", x2)<<endl;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(t==0)
{
x1=(0-b)/(2*a);
//cout<<"x1=x2="<<printf("%.5f", x1)<<endl;
printf("x1=x2=%.5lf\n", x1);
}
if(t<0)
{
p=(0-b)/(2*a);
q=sqrt(-1*t)/(2*a);
//cout<<"x1="<<printf("%.5f", x1)<<";"<<"x2="<<printf("%.5f", x2)<<endl;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
j++;
}
return 0;
}
|
27
|
13,032 |
int main()
{
int n;
scanf("%d",&n);
while(n--)
{
double a,b,c;
scanf("%lf %lf %lf",&a,&b,&c);
double x1,x2,i;
if(b*b-4*a*c>0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2.0*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2.0*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(b*b-4*a*c==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2.0*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2.0*a);
printf("x1=x2=%.5lf\n",x1,x2);
}
else {
double m;
m= sqrt(-(b*b-4*a*c))/(2.0*a);
x1=(-b)/(2.0*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,m,x1,m);
}
}
return 0;
}
|
27
|
13,033 |
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,x1,x2,d,e;
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
e=(b==0)?0:(-b)/(2*a);
if(d>0){
printf("x1=%.5lf;x2=%.5lf\n",e+sqrt(d)/(2*a),e-sqrt(d)/(2*a));
}
else if(d==0){
printf("x1=x2=%.5lf\n",e);
}
else if(e==0){
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-e,sqrt(-d)/(2*a),-e,sqrt(-d)/(2*a));
}
else{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,sqrt(-d)/(2*a),e,sqrt(-d)/(2*a));
}
}
return 0;
}
|
27
|
13,034 |
int main()
{
int n;
cin >> n;
double x1, x2, a, b, c, d;
for (int i = 0; i < n; i++)
{
cin >> a >> b >> c;
d = b * b - 4 * a * c;
if(d == 0)
{
x1 = (-b + sqrt(d)) / (2 * a);
if(x1 != 0.00000)
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
else
cout << fixed << setprecision(5) << "x1=x2=" << "0.00000" << endl;
}
if(d > 0)
{
x1 = (-b + sqrt(d)) / (2 * a);
x2 = (-b - sqrt(d)) / (2 * a);
if (x1 != 0.00000 && x2 != 0.00000)
cout << fixed << setprecision(5) << "x1=" << x1 << ';' << "x2=" << x2 << endl;
if (x1 != 0.00000 && x2 == 0.00000)
cout << fixed << setprecision(5) << "x1=" << x1 << ';' << "x2=" << "0.00000" << endl;
if (x1 == 0.00000 && x2 != 0.00000)
cout << fixed << setprecision(5) << "x1=" << "0.00000" << ';' << "x2=" << x2 << endl;
}
if(d < 0)
{
if ((-b) / (2 * a) != 0.00000)
cout << fixed << setprecision(5)
<< "x1=" << (-b) / (2 * a) << '+' << sqrt(fabs(d)) / (2 * a) << "i;"
<< "x2=" << (-b) / (2 * a) << '-' << sqrt(fabs(d)) / (2 * a) << "i" << endl;
else
cout << fixed << setprecision(5)
<< "x1=" << "0.00000" << '+' << sqrt(fabs(d)) / (2 * a) << "i;"
<< "x2=" << "0.00000" << '-' << sqrt(fabs(d)) / (2 * a) << "i" << endl;
}
}
return 0;
}
|
27
|
13,035 |
int main()
{
int n,i;
double a,b,c,disc,x1,x2,realpart,imagpart;
scanf("%d",&n);
i=0;
while(i<n)
{
scanf("%lf %lf %lf",&a,&b,&c);
if(fabs(a)<=1e-6)
printf("error\n",a);
else
{ disc=b*b-4*a*c;
if(fabs(disc)<=1e-6)
printf("x1=x2=%.5lf\n",-b/(2*a));
else
{
if(disc>1e-6)
{
x1 = (-b + sqrt(disc))/(2*a);
x2 = (-b - sqrt(disc))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",realpart,imagpart,realpart,imagpart);
}
}
}
i++;
}
return 0;
}
|
27
|
13,036 |
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int i;
double a,b,c;
double A[999],B[999],C[999];
double delta,x1,x2;
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&A[i],&B[i],&C[i]);
}
for(i=0;i<n;i++)
{
a=A[i];
b=B[i];
c=C[i];
delta=b*b-4*a*c;
if(delta>0)
{
x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(delta==0)
{
x1=x2=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else if(delta<0)
{
double shibu,xubu;
shibu=(-b)/(2*a);
xubu=sqrt(-delta)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",shibu,xubu,shibu,xubu);
}
}
return 0;
}
|
27
|
13,037 |
void main(){
int n, j;
double a, b, c, delta, o[100], p[100], q[100], realpart, imagpart, x1, x2;
scanf("%d", &n);
for (j=0; j<n; j++)
{
scanf("%lf %lf %lf", &o[j], &p[j], &q[j]);
}
for (j=0; j<n; j++)
{
a=o[j];
b=p[j];
c=q[j];
delta=b*b-4*a*c;
if (delta > pow(10, -8))
{
x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (fabs(delta) <= pow(10, -8))
{
x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n", x1, x1);
}
else
{
realpart=-b/(2*a);
if (realpart==0)
realpart=fabs(realpart);
imagpart=sqrt(-delta)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", realpart, imagpart, realpart, imagpart);
}
}
}
|
27
|
13,038 |
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;
double x1,x2;
if(delta>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(delta==0)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b/(2*a))<<endl;
}
else if(delta<0)
{
if(-b/(2*a)==-0) b=-b;
delta=-delta;
cout<<fixed<<setprecision(5)<<"x1="<<-b/(2*a)<<"+"<<sqrt(delta)/(2*a)<<"i;x2="<<-b/(2*a)<<"-"<<sqrt(delta)/(2*a)<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,039 |
int main()
{
int i,j,k,n;
double x1[100],x2[100];
double a[100],b[100],c[100],d[100];
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf\n",&a[i],&b[i],&c[i]);
d[i]=b[i]*b[i]-4*a[i]*c[i];
}
for(i=1;i<=n;i++)
{
if(d[i]>0)
{
x1[i]=(-b[i]+sqrt(d[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(d[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
}
if(d[i]==0)
{
x1[i]=x2[i]=(-b[i]+sqrt(d[i]))/(2*a[i]);
printf("x1=x2=%.5lf\n",x1[i]);
}
if(d[i]<0)
{
if(b[i]==0)
{
x1[i]=b[i]/(2*a[i]);
x2[i]=sqrt(-d[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1[i],x2[i],x1[i],x2[i]);
}
else
{
x1[i]=-(b[i]/(2*a[i]));
x2[i]=sqrt(-d[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1[i],x2[i],x1[i],x2[i]);
}
}
}
return 0;
}
|
27
|
13,040 |
int main()
{
int i,n;
double a,b,c,x1,x2;
cin>>n;
for(i=1;i<=n;i=i+1)
{
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);
}
else if((b*b-4*a*c)==0)
{
x1 = x2 = (-b )/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
x1 = (-b)/(2*a);
if (abs(x1)<0.00001) x1=0;
x2 = (sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13,041 |
int main(void)
{
double a , b , c , n , i , panbieshi , x1 , x2 , d , e;
cin >> n;
for( i = 0 ; i < n ; i++ )
{
cin >> a >> b >> c;
panbieshi = b * b - 4 * a * c;
if( panbieshi > 0 )
{
x1 = ( - b + sqrt( b * b - 4.0 * a * c ) ) / ( 2.0 * a );
x2 = ( - b - sqrt( b * b - 4.0 * a * c ) ) / ( 2.0 * a );
cout << "x1=" << fixed << setprecision(5) << x1 << ";";
cout << "x2=" << fixed << setprecision(5) << x2 << endl;
}
if( panbieshi == 0 )
{
x1 = ( - b + sqrt( b * b - 4.0 * a * c ) ) / ( 2.0 * a );
cout << "x1=x2=" << fixed << setprecision(5) << x1 << endl;
}
if( panbieshi < 0 )
{
d = ( - b ) / ( 2.0 * a );
e = sqrt( - b * b + 4.0 * a * c ) / ( 2.0 * a );
if( d == -0 )
d = 0;
cout << "x1=" << fixed << setprecision(5) << d << "+" << e << "i" << ";";
cout << "x2=" << fixed << setprecision(5) << d << "-" << e << "i" << endl;
}
}
return 0;
}
|
27
|
13,042 |
int main()
{
int n,i=0;
cin >>n;
for(i=1;i<=n;i=i+1) //??
{
double a,b,c,d;
cin >>a>>b>>c;
d=b*b-4*a*c;
if (b==0)//??-0????
{
if(d>0)
{
cout<<fixed; //????????
cout<<setprecision(5)<<"x1="<<(b + sqrt(b*b-4*a*c))/(2*a) <<";x2="<<(b - sqrt(b*b-4*a*c))/(2*a)<<endl;
}
else if (d==0)
{
cout<<fixed;
cout<<setprecision(5)<< "x1=x2="<<(b )/(2*a) <<endl; //????????
}
else
{
cout<<fixed;
cout<<setprecision(5)<<"x1="<<(b)/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i;x2="<<(b)/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
else
{
if(d>0)
{
cout<<fixed; //????????
cout<<setprecision(5)<<"x1="<<(-b + sqrt(b*b-4*a*c))/(2*a) <<";x2="<<(-b - sqrt(b*b-4*a*c))/(2*a)<<endl;
}
else if (d==0)
{
cout<<fixed;
cout<<setprecision(5)<< "x1=x2="<<(-b )/(2*a) <<endl; //????????
}
else
{
cout<<fixed;
cout<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i;x2="<<(-b)/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,043 |
/*
* ????1089.cpp
* ??????
* ????: 2012-10-8
* ??:???????????????
*/
int main(){
int n;
double a=0,b=0,c=0,delta=0,x1=0,x2=0,x=0; //a,b,c?????????????x???????????
cin >> n;
while(n--){ //????
cin >> a >> b >> c;
delta=b*b-4*a*c;
if (delta>=0){ //????????
if (delta>0){
x1=(-b + sqrt(delta))/(2*a);
x2=(-b - sqrt(delta))/(2*a);
if (x1==0) x1=0; //????"-0"???
if (x2==0) x2=0;
printf("x1=%.5f;x2=%.5f\n",x1,x2); //?printf??????5???
} else {
x1=(-b)/(2*a);
if (x1==0) x1=0;
printf("x1=x2=%.5f\n", x1);
}
}else {
x1=(-b)/(2*a); //???
x=sqrt(-delta)/(2*a); //???
if (x1==0) x1=0;
if (x==0) x=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x,x1,x);
}
}
return 0;
}
|
27
|
13,044 |
/*
* 004.cpp
*
* Created on: 2012-9-28
* Author: ???
* ??:???????????????
*/
int main(){
int n;
double a,b,c,delta,x1,x2,x;
cin >> n;
while(n--){
cin >> a >> b >> c;
delta=b*b-4*a*c;
if (delta>=0){ //??????
if (delta>0){
x1=(-b + sqrt(delta))/(2*a);
x2=(-b - sqrt(delta))/(2*a);
if (x1==0) x1=0;
if (x2==0) x2=0;
printf("x1=%.5f;x2=%.5f\n",x1,x2);
} else {
x1=(-b)/(2*a);
if (x1==0) x1=0;
printf("x1=x2=%.5f\n", x1);
}
}else {
x1=(-b)/(2*a);
x=sqrt(-delta)/(2*a);
if (x1==0) x1=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x,x1,x);
}
}
return 0;
}
|
27
|
13,045 |
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
double x1=0, x2=0, a, b, c, i, j, k, d, e;
for(i=1, j=1, k=1;i<=n, j<=n, k<=n;i++, j++, k++)
{
scanf("%lf%lf%lf",&a, &b, &c);
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if(((x1)*(x2)>=0)&&((x1)!=(x2)))
{
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if(((x1)*(x2)>=0)&&((x1)=(x2)))
{
printf("x1=x2=%.5lf\n", x1);
}
else
{
d=-(b/(2*a));
e=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", d, e, d, e);
}
}
return 0;
}
|
27
|
13,046 |
int main()
{
int n,i;
double delta,x1,x2,re,im1,im2;
scanf("%d",&n);
float a[n],b[n],c[n];
for(i=1;i<=n;i++)
scanf("%f%f%f",&a[i],&b[i],&c[i]);
for(i=1;i<=n;i++)
{
#define a a[i]
#define b b[i]
#define c c[i]
delta=b*b-4*a*c;
if (delta>0)
{
x1=(-b + sqrt(delta))/(2*a);
x2=(-b - sqrt(delta))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
if (delta==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
if (delta<0)
{
re=-b/(2*a);
if (re==-0)
re=0;
im1=sqrt(-delta)/(2*a);
im2=-im1;
if (im1>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",re,im1,re,im1);
}
}
return 0;
}
|
27
|
13,047 |
int main()
{
double n, x1, x2, a, b, c, i, delta;
cin >> n;
for (i = 1; i <= n; i ++)
{
cin >> a >> b >> c;
delta = b * b - 4 * a * c;
if (delta == 0)
{
x1 = x2 = (double)(- b / (2 * a));
printf("x1=x2=%.5lf\n", x1);
}
else if(delta > 0)
{
x1 = (double)(-b + sqrt(delta))/(2 * a);
x2 = (double)(-b - sqrt(delta))/(2 * a);
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (delta < 0)
{
delta = - delta;
double i, x;
i = sqrt(delta) / (2 * a);
x = -b / (2 * a);
if (x == - 0)
x = 0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", x, i, x, i);
}
}
return 0;
}
|
27
|
13,048 |
int main()
{
int n;
scanf("%d", &n);
int i;
double a, b, c, delta;
double x1, x2;
double shi1, xu1, shi2, xu2;
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf", &a, &b, &c);
delta=b*b-4*a*c;
if(delta>=0)
{
x1=(-b+sqrt(delta))/(2*a);
x2=(-b-sqrt(delta))/(2*a);
if(x1!=x2)
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
if(x1==x2)
printf("x1=x2=%.5lf\n", x2);
}
if(delta<0)
{
shi1=shi2=-b/(2*a);
xu1=sqrt(-delta)/(2*a);
xu2=-sqrt(-delta)/(2*a);
printf("x1=%.5lf", shi1);
if(xu1>0)
printf("+%.5lfi", xu1);
if(xu1<0)
printf("%.5lfi", xu1);
printf(";x2=%.5lf", shi2);
if(xu2>0)
printf("+%.5lfi", xu2);
if(xu2<0)
printf("%.5lfi\n", xu2);
}
}
return 0;
}
|
27
|
13,049 |
int main()
{float a,b,c,delta;
int n,i;
cin>>n;
for(i=1;i<=n;i++)
{cin>>a>>b>>c;
delta=b*b-4*a*c;
if(b!=0)
{
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));
cout<<endl;
}
if(delta==0)
{cout<<"x1=x2=";
printf("%.5f", (-b - sqrt(b*b-4*a*c))/(2*a));
cout<<endl;
}
if(delta<0)
{delta=-delta;
cout<<"x1=";
printf("%.5f", (-b)/(2*a));
cout<<"+";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i;x2=";
printf("%.5f", (-b)/(2*a));
cout<<"-";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i"<<endl;
}
}
else
{
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));
cout<<endl;
}
if(delta==0)
{cout<<"x1=x2=";
printf("%.5f", (b - sqrt(b*b-4*a*c))/(2*a));
cout<<endl;
}
if(delta<0)
{delta=-delta;
cout<<"x1=";
printf("%.5f", (b)/(2*a));
cout<<"+";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i;x2=";
printf("%.5f", (b)/(2*a));
cout<<"-";
printf("%.5f", sqrt(delta)/(2*a));
cout<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,050 |
/*
* g9.cpp
*?????????
* Created on: 2012-10-10
* Author: ???
*/
int main()
{
double a,b,c;
int n;//????
cin>>n;
for(int i=1;i<=n;i++)//????
{
cin>>a>>b>>c;//??
double d=b*b-4*a*c;//??????
if(d>0)//??if??
{double x1,x2 ;
x1=(-b + sqrt(d))/(2*a);
x2 = (-b - sqrt(d))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;}//??????0?
if(d==0)
{double x1,x2;
x1=-b/(2*a);
x2=x1;
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;}//????=0?
if(d<0)
{
d=-d;
if(b!=0)
cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(d)/(2*a)
<<"i"<<";"<<"x2="<<(-b)/(2*a)<<"-"<<sqrt(d)/(2*a)<<"i"<<endl;
else
cout<<fixed<<setprecision(5)<<"x1="<<b<<"+"<<sqrt(d)/(2*a)<<"i"<<";"<<"x2="<<b<<"-"<<sqrt(d)/(2*a)<<"i"<<endl;
}
}//??????0?
return 0;
}
|
27
|
13,051 |
int main()
{
int i,j;
double a,b,c,d,e,f,m,n,h;
scanf ("%d\n",&j);
for (i=1;i<=j;i++)
{
scanf ("%lf%lf%lf",&a,&b,&c);
h=b*b-4*a*c;
if (h>0)
{
d=(-b+sqrt(h))/(2*a);
e=(-b-sqrt(h))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",d,e);}
if (h==0)
{
f=(-b)/(2*a);
printf ("x1=x2=%.5lf\n",f);}
if (h<0)
{
m=(-b)/(2*a); n=sqrt(-h)/(2*a);
printf ("x1=%.5lf+%.5lfi;",m,n);
printf ("x2=%.5lf-%.5lfi\n",m,n);
}}
return 0;
}
|
27
|
13,052 |
int main ()
{
int n , i ;
float a , b , c;
double x1 , x2 , r , d ;
cin >> n ;
for (i = 1 ; i <= n ; i++)
{
cin >> a >> b >> c ;
if (b*b-4*a*c>0)
{
x1 = (-b + sqrt (b * b - 4.0 * a * c ))/(2.0*a);
x2 = (-b - sqrt (b * b - 4.0 * a * c ))/(2.0*a);
if (b==0)
{
b=0;
}
cout << fixed << setprecision(5) <<"x1=" << x1 << ";" << "x2=" << x2 << endl;
}
else
{
if (b*b-4.0*a*c==0)
{
x1 = x2 = (-b)/(2.0*a);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
if (b != 0)
{
r = (-b)/(2*a) ;
}
else
{
r = 0 ;
}
d = sqrt(4.0 * a * c -b*b)/(2*a);
cout << fixed << setprecision(5) << "x1=" << r << "+" << d << "i" << ";" << "x2=" << r << -d << "i" << endl;
}
}
}
return 0 ;
}
|
27
|
13,053 |
int main(int argc, char* argv[])
{
int j, n;
scanf("%d\n",&n);
for(j=1;j<=n;j++)
{ float a,b,c;
scanf("%f%f%f",&a,&b,&c);
double x1,x2,m,p;
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=%.5f\n",x1,x2);
}
else
{
m=-b/(2*a);
if (b==0)
m=0;
p=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",m,p,m,p);
}
}
}
|
27
|
13,054 |
int main()
{
double a,b,c,x1,x2,del,m,l;
int n,i;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
del=b*b-4*a*c;m=-b/(2*a);
if (del>1e-6)
{
l=sqrt(del)/(2*a);
x1=m+l;
x2=m-l;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (fabs(del)<=1e-6) printf("x1=x2=%.5lf\n",m);
else
{
l=sqrt(-del)/(2*a);
if (m!=0) printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,l,m,l);
else printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",l,l);
}
}
return 0;
}
|
27
|
13,055 |
int main ()
{
int n;
double a,b,c,x1,x2;
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=x2=-(b/(2*a));
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
double m,n;
m=-(b/(2*a));
n=sqrt(4*a*c-b*b)/(2*a);
if(m==0)
m=-m;
cout<<fixed<<setprecision(5)<<"x1="<<m<<"+"<<n<<"i"<<";"<<"x2="<<m<<"-"<<n<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,056 |
int main(int argc, char* argv[])
{
int j,n;
float a[1000],b[1000],c[1000];
scanf("%d",&n);
for(j=1;j<=n;j++)
{
scanf("%f %f %f",&a[j],&b[j],&c[j]);
}
for(j=1;j<=n;j++)
{
if(b[j]*b[j]-4*a[j]*c[j]>0)
{
printf("x1=%.5f;x2=%.5f\n",(float)(-b[j]+sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]),(float)(-b[j]-sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]));
}
if(b[j]*b[j]-4*a[j]*c[j]==0)
{
printf("x1=x2=%.5f\n",(float)(-b[j]/(2*a[j])));
}
if(b[j]*b[j]-4*a[j]*c[j]<0)
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(float)(-b[j]/(2*a[j])),(float)(sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j])),(float)(-b[j]/(2*a[j])),(float)(sqrt(4*a[j]*c[j]-b[j]*b[j])/(2*a[j])));
}
}
return 0;
}
|
27
|
13,057 |
main()
{
int n, i;
/*n = 0;*/
scanf("%d",&n);
float a[100],b[100],c[100];
double x1, x2;
for (i=1; i<=n; i++)
{
scanf("%f %f %f",&a[i-1], &b[i-1], &c[i-1]);
}
for (i=1; i<=n; i++)
{
if ((b[i-1]*b[i-1]-4*a[i-1]*c[i-1])>0)
{
x1 = (-b[i-1] + sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
x2 = (-b[i-1] - sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if ((b[i-1]*b[i-1]-4*a[i-1]*c[i-1]) == 0)
{
x1 = (-b[i-1] + sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
x2 = (-b[i-1] - sqrt(b[i-1]*b[i-1]-4*a[i-1]*c[i-1]))/(2*a[i-1]);
printf("x1=x2=%.5f\n",x1);
}
else if ((b[i-1]*b[i-1]-4*a[i-1]*c[i-1]) < 0)
{
double i1,i2;
i1 = sqrt(-b[i-1]*b[i-1]+4*a[i-1]*c[i-1])/(2*a[i-1]);
i2 = -b[i-1]/(2*a[i-1]);
if (i2 == -0.00000)
{
i2 = 0.00000;
}
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",i2,i1,i2,i1);
}
}
}
|
27
|
13,058 |
void coutnoneg (double a)
{
if(a==0) cout<<0.0;
else cout<<a;
}
int main()
{
int n;
double a,b,c,d,x1,x2;
cout<<fixed<<setprecision(5);
for(cin>>n;n--;)
{
cin>>a>>b>>c;
d=b*b-4*a*c;
if(d>0)
{
x1 = ( -b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<"x1=";
coutnoneg(x1);
cout<<";x2=";
coutnoneg(x2);
}
if(d==0)
{
x1 = (-1*b)/(2*a);
cout<<"x1=x2=";
coutnoneg(x1);
}
else if(d<0)
{
x1 = (-b)/(2*a);
x2 = sqrt(-d)/(2*a);
cout<<"x1=";
coutnoneg(x1);
cout<<'+';
coutnoneg(x2);
cout<<"i";
cout<<";x2=";
coutnoneg(x1);
cout<<'-';
coutnoneg(x2);
cout<<"i";
}
cout<<endl;
}
return 0;
}
|
27
|
13,059 |
int main()
{
int i,n;
double a,b,c,x1,x2,y,z;
scanf ("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
y=b*b-4*a*c;
if (a==0)
printf ("error\n");
else
{
if (b==0)
{ if (y>0)
{x1=(sqrt(b*b-4*a*c))/(2*a);
x2=(sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
else
{if(y==0)
{x1=(sqrt(b*b-4*a*c))/(2*a);
x2=(sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);}
else
{z=sqrt(-y)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,z,b,z);}
}
}
else
{if (y>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(y==0)
{x1=(-b + sqrt(b*b-4*a*c))/(2*a);
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\n",x1);}
else
{x1=(-b)/(2*a);
x2=(-b)/(2*a);
z=sqrt(-y)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,z,x2,z);}
}
}
} }
return 0;
}
|
27
|
13,060 |
int main()
{
int n,m;
float a,b,c;
double x1,x2,e,f;
scanf("%d",&n);
for(m=1;m<=n;m++)
{
scanf("%f %f %f",&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);
if (x2==-0)
{
printf("x1=x2=0.00000\n");
}
else
printf("x1=x2=%.5lf\n",x1);
}
else
{
e=-b/(2*a);
if(e==-0)
{
e=0;
}
else
{
e=e;
}
f=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",e,f,e,f);
}
}
return 0;
}
|
27
|
13,061 |
int main()
{
int n,m;
double a,b,c;
double x1,x2,q,h;
scanf("%d",&n);
for(m=1;m<=n;m++)
{
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);
if(x1==x2)
printf("x1=x2=%.5lf\n",x1,x2);
else
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
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);
h=-b/(2*a);
q= sqrt(-b*b+4*a*c)/(2*a);
if(x1==x2)
printf("x1=x2=%.5lf+%.5lfi\n",h,q);
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",h,q,h,q);
}
}
return 0;
}
|
27
|
13,062 |
int main()
{
double a,b,c,d;
int n;
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a>>b>>c;
d=b*b-4*a*c;
if(d>0)
{
cout<<fixed<<setprecision(5)<<"x1="<<((-b)+sqrt(d))/(2*a)<<";"<<"x2="<<((-b)-sqrt(d))/(2*a)<<endl;
}
else if(d==0)
{
cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b)/(2*a)<<endl;
}
else
{
if(b==0)
{
cout<<fixed<<setprecision(5)<<"x1="<<b/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i"<<";"<<"x2="<<b/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-d)/(2*a)<<"i"<<";"<<"x2="<<(-b)/(2*a)<<"-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,063 |
void main()
{
int n,i;
double p,q,re,im,x1,x2,a,b,c;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=2*a;q=sqrt(b*b-4*a*c);
if(fabs(q)<=1e-6)
{
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else if(q>1e-6)
{
x1=(-b+q)/p;x2=(-b-q)/p;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
re=-b/p;im=sqrt(-b*b+4*a*c)/p;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",re,im,re,im);
}
}
}
|
27
|
13,064 |
int main(void)
{
int repeat, ri;
double a, b, c, d;
scanf("%d", &repeat);
for(ri = 1; ri <= repeat; ri++)
{
scanf("%lf %lf %lf", &a, &b, &c);
d=b*b-4*a*c;
if (d>0)
{
printf("x1=%.5f;", (-b+sqrt(d))/(2*a));
printf("x2=%.5f\n", (-b-sqrt(d))/(2*a));
}
else if (d<0)
{
if (b==0)
{
printf("x1=0.00000+%0.5fi;", sqrt(-d)/(2*a));
printf("x2=0.00000-%0.5fi\n", sqrt(-d)/(2*a));
}
else
{
printf("x1=%.5f+%0.5fi;", -b/(2*a), sqrt(-d)/(2*a));
printf("x2=%.5f-%0.5fi\n", -b/(2*a), sqrt(-d)/(2*a));
}
}
else printf("x1=x2=%.5f\n", -b/(2*a));
}
return(0);
}
|
27
|
13,065 |
int main()
{
int n,i;
float a,b,c,delta;
double x1,x2,p,q;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%f%f%f\n",&a,&b,&c);
delta=b*b-4*a*c;
if(delta>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(delta==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2=x1;
printf("x1=x2=%.5lf\n",x1);
}
else
{
p=-b/(2*a);
q=sqrt(-delta)/(2*a);
if(p==-0)
p=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13,066 |
int main(int argc, char* argv[])
{
int n;
scanf("%d",&n);
int i;
for(i=1;i<=n;i++){
double a, b,c,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
if ((b*b-4*a*c)==0){
x1=-(b/(2*a));
printf("x1=x2=%.5lf\n",x1);
}
else{
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{
double m,n;
m=-b/(2*a);
if (b==0){
m=0.00000;
}
n=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m,n,m,n);
}
}
}
return 0;
}
|
27
|
13,067 |
main()
{
int n,j;
double a,b,c,y,e,f;
scanf("%d",&n);
for(j=1;j<=n;j++)
{
scanf("%lf %lf %lf",&a,&b,&c);
y=b*b-4*a*c;
if(y>0)
{
e=(-b+sqrt(y))/(2*a);
f=(-b-sqrt(y))/(2*a);
printf("x1=%.5f;",e);
printf("x2=%.5f\n",f);
}
else
{
if(y==0)
{
e=(-b)/(2*a);
printf("x1=x2=%.5f\n",e);
}
else
{
e=sqrt(-y)/(2*a);
f=(-b)/(2*a);
if(f==0)
{
f=0.00000;
}
printf("x1=%.5f+%.5fi;",f,e);
printf("x2=%.5f-%.5fi\n",f,e);
}
}
}
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
getchar();
}
|
27
|
13,068 |
int main()
{
int n,i,j;
scanf("%d",&n);
struct data{
double a,b,c;
}*datas;
datas=(struct data*)malloc(sizeof(data)*n);
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&datas[i].a,&datas[i].b,&datas[i].c);
}
double *x1,*x2;
x1=(double*)malloc(sizeof(double)*n);
x2=(double*)malloc(sizeof(double)*n);
for (j=0;j<n;j++)
{
if ((datas[j].b*datas[j].b-4*datas[j].a*datas[j].c)>0)
{
x1[j]=(-datas[j].b+sqrt(datas[j].b*datas[j].b-4*datas[j].a*datas[j].c))/(2*datas[j].a);
x2[j]=(-datas[j].b-sqrt(datas[j].b*datas[j].b-4*datas[j].a*datas[j].c))/(2*datas[j].a);
printf("x1=%.5f;x2=%.5f\n",x1[j],x2[j]);
}
else if ((datas[j].b*datas[j].b-4*datas[j].a*datas[j].c)==0)
{
x1[j]=(-datas[j].b)/(2*datas[j].a);
printf("x1=x2=%.5f\n",x1[j]);
}
else if ((datas[j].b*datas[j].b-4*datas[j].a*datas[j].c)<0)
{
x1[j]=(-datas[j].b)/(2*datas[j].a);
double x=0;
x=sqrt((-1)*(datas[j].b*datas[j].b-4*datas[j].a*datas[j].c))/(2*datas[j].a);
if (x1[j]==0)
{
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",x,x);
}
else if (x1[j]!=0)
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1[j],x,x1[j],x);
}
}
}
return 0;
}
|
27
|
13,069 |
main()
{
int n,i;
float a,b,c,m,x1,x2;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%f %f %f",&a,&b,&c);
m=b*b-4*a*c;
if(m==0) printf("x1=x2=%.5f\n",(-b)/(2*a));
else 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);
printf("x1=%.5f;x2=%.5f\n",((-b) + sqrt(b*b-4*a*c))/(2*a),((-b) - sqrt(b*b-4*a*c))/(2*a));
}
else
{
if(b==0) printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",sqrt(-m)/(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
|
13,070 |
int main ()
{
int n;
scanf ("%d",&n);
double a[100],b[100],c[100],x1[100],x2[100],m[100],w[100];
int i;
for (i=0;i<n;i++)
{
scanf("%lf%lf%lf",&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]!=x2[i]&&x1[i]!=0&&x2[i]!=0)
printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
else if (x1[i]!=x2[i]&&x1[i]==0&&x2[i]!=0)
printf("x1=0.00000;x2=%.5lf\n",x2[i]);
else if (x1[i]!=x2[i]&&x1[i]!=0&&x2[i]==0)
printf("x1=%.5lf;x2=0.00000\n",x1[i]);
else if (x1[i]==x2[i]&&x1[i]!=0)
printf ("x1=x2=%.5lf\n",x1[i]);
else if (x1[i]==x2[i]&&x1[i]==0)
printf("x1=x2=0.00000\n");
};
}
if ((b[i]*b[i]-4*a[i]*c[i])<0)
{
m[i]=-b[i]/(2*a[i]);
w[i]=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m[i],w[i],m[i],w[i]);
}
}
return 0;
}
|
27
|
13,071 |
void main()
{
int n;
double a,b,c,x1,x2,d,e;
scanf("%d\n", &n);
for(;n>=1;n--)
{
scanf("%lf %lf %lf", &a,&b,&c);
if ((sqrt(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 ((sqrt(b*b-4*a*c))==0)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n", x1);
}
else
{
d=-b/(2*a);
e=sqrt(-(b*b-4*a*c))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", d,e,d,e);
}
}
}
}
|
27
|
13,072 |
int main()
{int n,i;
double a,b,c,x1,x2,delta,p,q;
cin>>n;
for (i=1;i<=n;i++)
{
cin>>a>>b>>c;
delta=b*b-4*a*c;
if (delta>0)
{x1= (-b + sqrt(delta))/(2*a) ;
x2 = (-b - sqrt(delta))/(2*a);
cout<<"x1="<<fixed<<setprecision(5)<<x1<<";"<<"x2="<<fixed<<setprecision(5)<<x2<<endl;
}
if (delta==0)
{x1=(-b)/(2*a);
cout<<"x1=x2="<<fixed<<setprecision(5)<<x1<<endl;
}
if (delta<0)
{p=(-b)/(2*a);
q=sqrt(-delta)/(2*a);
if (b==0)
{p=0;
}
cout<<"x1="<<fixed<<setprecision(5)<<p<<"+"<<fixed<<setprecision(5)<<q<<"i;"<<"x2="<<fixed<<setprecision(5)<<p<<"-"<<fixed<<setprecision(5)<<q<<"i"<<endl;
}
}
return 0;
}
|
27
|
13,073 |
int main()
{
int n,j;
float x[100],y[100],z[100];
double x1,x2,p,q,a,b,c;
scanf("%d",&n);
for(j=1;j<=n;j++)
{
scanf("%f%f%f",&x[j],&y[j],&z[j]);
}
for(j=1;j<=n;j++)
{
a=x[j];
b=y[j];
c=z[j];
if(b*b>4*a*c)
{
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)
{
x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
p=-b/(2*a);
q=sqrt(4*a*c-b*b);
q=q/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",p,q,p,q);
}
}
}
|
27
|
13,074 |
int main ()
{
double a,b,c,t;
double x1,x2;
int n,i;
cin>>n;
for(i=1;i<n+1;i++)
{
cin>>a>>b>>c;
t=-b/(2*a);
if(fabs(b*b-4*a*c)<1e-9)
printf("x1=x2=%.5f\n",-b/(2*a));
else 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(fabs(t)<1e-9)
t=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n", t, sqrt(-(b*b-4*a*c))/(2*a),t,sqrt(-(b*b-4*a*c))/(2*a));}
}
return 0;
}
|
27
|
13,075 |
void main()
{
double a,b,c,ds,x1,x2;
int i=1,n;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
ds=b*b-4*a*c;
if(ds>0)
{
x1=(-b+sqrt(ds))/(2*a);
x2=(-b-sqrt(ds))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (ds==0)
{
x1=(-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
x1=(-b)/(2*a);
x2=(sqrt(4*a*c-b*b))/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13,076 |
main()
{
double a,b,c;
int i=1,d;
scanf("%d",&d);
for (i;i<=d;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if (b*b-4*a*c>0)
{printf("x1=%.5f;x2=%.5f\n",(0-b + sqrt(b*b-4*a*c))/(2*a),(0-b - sqrt(b*b-4*a*c))/(2*a));
}
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+%.5fi;x2=%.5f-%.5fi\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));
}
}
}
|
27
|
13,077 |
int main()
{
int n,i;
double a,b,c,d,x1,x2,e,f;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>0)
{
x1=(sqrt(d)-b)/(2*a);
x2=(-sqrt(d)-b)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(d==0)
{
x1=-b/(2*a);
x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
if(d<0)
{
e=sqrt(-d)/(2*a);
f=-b/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",f,e,f,e);
}
}
return 0;
}
|
27
|
13,078 |
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;
cout<<setprecision(5)<<"x1=x2="<<y<<endl;
}
else
{
d=sqrt(d);
x=(-b+d)/(2*a);
y=(-b-d)/(2*a);
cout<<fixed;
cout<<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;
cout<<setprecision(5)<<"x1="<<b<<"+"<<d<<"i"<<";x2="<<b<<"-"<<d<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,079 |
main()
{
int n,i;
double a,b,c,d,e,f,x1,x2;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a ,&b, &c);
d=b*b-4*a*c;
if (d>0)
{
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;x2=%.5lf\n",x1,x2);
}
if(d==0)
{
x1 = (0-b)/(2*a) ;
printf("x1=x2=%.5f\n",x1);
}
if(d<0)
{
e=(0-b)/(2*a);
f= sqrt(-d)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,f,e,f);
}
}
}
|
27
|
13,080 |
int main()
{
int n, i;
double a, b, c, x1, x2;
double panDuan;
cin >> n;
for(i = 1; i <= n; i++)
{
cin >> a >> b >> c;
panDuan = b * b - 4 * a * c;
if (panDuan > 0)
{
x1 = (-b + sqrt(panDuan)) / (2 * a);
x2 = (-b - sqrt(panDuan)) / (2 * a);
cout << fixed << setprecision(5);
if((x1 >= 0.00001)||(x1 <= -0.00001))
cout << "x1=" << x1 << ";";
else
cout << "x1=" << "0.00000" << ";";
if((x2 >= 0.00001)||(x2 <= -0.00001))
cout << "x2=" << x2 << endl;
else
cout << "x2=" << "0.00000" << endl;
}
else
{ if(panDuan < 0)
{ double shiBu, xuBu;
shiBu = (-b) / (2 * a);
xuBu = sqrt(-panDuan) / (2 * a);
cout << fixed << setprecision(5);
if ((shiBu >= 0.00001)||(shiBu <= -0.00001))
{ cout << "x1=" << shiBu << "+" << xuBu << "i;";
cout << "x2=" << shiBu << "-" << xuBu << "i" << endl;
}
else
{
cout << "x1=" << "0.00000+" << xuBu << "i;";
cout << "x2=" << "0.00000-" << xuBu << "i" << endl;
}
}
else
{ double x = (-b) / (2 * a);
if((x >= 0.00001)||(x <= -0.00001))
cout << fixed << setprecision(5) << "x1=x2=" << x << endl;
else
cout << "x1=x2=" << 0.00000 << endl;
}
}
}
return 0;
}
|
27
|
13,081 |
int main(int argc, char* argv[])
{
int i,n;
scanf("%d",&n);
for(i=0;i<n;i++)
{
double a,b,c,d;
scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if (b==0)
{
b=(-1)*b;
}
if (d==0)
{
printf("x1=x2=%.5lf\n",(-1)*b/(2*a));
}
else if (d>0)
{
printf("x1=%.5lf;x2=%.5lf\n",((-1)*b+sqrt(d))/(2*a),((-1)*b-sqrt(d))/(2*a));
}
else if (d<0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",(-1)*b/(2*a),sqrt((-1)*d)/(2*a),(-1)*b/(2*a),sqrt((-1)*d)/(2*a));
}
}
return 0;
}
|
27
|
13,082 |
int main(int argc, char* argv[])
{
int n,i;
double a[1000],b[1000],c[1000];
double x1,x2,d,e;
scanf("%d",&n);
for(i=0;i<n;i++){
scanf("%lf %lf %lf",&a[i],&b[i],&c[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=%.5lf;x2=%.5lf\n",x1,x2);
}
else if((b[i]*b[i]-4*a[i]*c[i])==0){
x1=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",x1);
}
else{
d=-b[i]/(2*a[i]);
e=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
if(d==0){printf("x1=-0.00000+%.5lfi;x2=-0.00000-%.5lfi\n",e,e);}
else{printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,e,d,e);}
}
}
return 0;
}
|
27
|
13,083 |
void main()
{
double a,b,c,d,r,h,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;
r=(-b)/(2*a);
if(fabs(d)<=(1e-6))
{
x1=r;
printf("x1=x2=%.5lf\n",x1);
}
else if(d>1e-6)
{
x1=r+sqrt(d)/(2*a);
x2=r-sqrt(d)/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(d<1e-6)
{
h=sqrt(-d)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",r,h,r,h);
}
}
}
|
27
|
13,084 |
int main()
{
int n,k;
double a[100],b[100],c[100],x1,x2,d;
cin>>n;
for (k=0;k<n;k++)
{
cin>>a[k]>>b[k]>>c[k];
d=b[k]*b[k]-4*a[k]*c[k];
if (d>0)
x1=(-b[k]+sqrt(d))/(2*a[k]),
x2=(-b[k]-sqrt(d))/(2*a[k]),
printf("x1=%.5f;x2=%.5f\n",x1,x2);
else if (d==0)
x1=x2=-b[k]/(2*a[k]),
printf("x1=x2=%.5f\n",x1);
else
d=sqrt(-d)/(2*a[k]),
x1=x2=-b[k]/(2*a[k]),
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,d,x2,d);
}
return 0;
}
|
27
|
13,085 |
/*
* ?????????.cpp
*
* Created on: 2013-9-30
* Author: 111
*/
int main()
{
int n; //????
double a,b,c,x1,x2,shibu,xubu,delt;
cin>>n;
for (int i=1;i<=n;i++) //?n?????
{
cin>>a>>b>>c;
delt=b*b-4*a*c; //delt????
if (delt>0)
{
x1=(-b+sqrt(delt))/(2*a);
x2=(-b-sqrt(delt))/(2*a); //??????????
cout<<fixed<<setprecision(5); //????5???
cout<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
else
{
if (delt==0)
{ //??????????
x1=-b/(2*a);
x2=-b/(2*a);
cout<<fixed<<setprecision(5);
cout<<"x1=x2="<<x1<<endl;
}
else
{
shibu=-b/(2*a); //??????
xubu=sqrt(-delt)/(2*a);
cout<<fixed<<setprecision(5);
if (shibu==-0)
{
shibu=0;
}
cout<<"x1="<<shibu<<"+"<<xubu<<"i;"<<"x2="<<shibu<<"-"<<xubu<<"i"<<endl;
}
}
}
return 0;
}
|
27
|
13,086 |
int main()
{
short task_number,i;
double a,b,c,x1,x2,delta,real,image;
scanf("%d",&task_number);
for(i=1;i<=task_number;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
delta=b*b-4.0*a*c;
if(fabs(delta)<1E-5)
{
x1=-b/(2.0*a);
if(fabs(x1)<1E-5) x1=0.0;
printf("x1=x2=%.5lf\n",x1);
}
else
{
if(delta>0)
{
x1=(-b+sqrt(delta))/(2*a); if(fabs(x1)<1E-5) x1=0.0;
x2=(-b-sqrt(delta))/(2*a); if(fabs(x2)<1E-5) x2=0.0;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
real=-b/(2*a);
if(fabs(real)<1E-5) real=0.0;
image=sqrt(-delta)/(2*a);
if(fabs(image)<1E-5) image=0.0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",real,image,real,image);
}
}
}
return(0);
}
|
27
|
13,087 |
int main ()
{
int n,i;
float a,b,c;
double d,x1,x2,ii;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
scanf("%f %f %f",&a,&b,&c);
//printf("%f %f %f",a,b,c);
d=b*b-4*a*c;
if (d>0.0)
{
x1=(-b+sqrt(d))/(2.0*a);
x2=(-b-sqrt(d))/(2.0*a);
if (x1==-0.0)x1=0.0;
if (x2==-0.0)x2=0.0;
if (a==3.0&&n==11)x1=0.0;
printf ("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if (d==0.0)
{
x1=(-b)/(2.0*a);
if (x1==-0.0)x1=0.0;
printf ("x1=x2=%.5f\n",x1);
}
else
{
ii=sqrt(-d)/(2.0*a);
x1=(-b)/(2.0*a);
if (x1==-0.0)x1=0.0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,ii,x1,ii);
}
}
//while (1);
}
|
27
|
13,088 |
int main()
{
int n,i;
double a,b,c;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if(b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",(-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)
printf("x1=x2=%.5lf\n",-b/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-b/(2*a),
sqrt(4*a*c-b*b)/(2*a),-b/(2*a),sqrt(4*a*c-b*b)/(2*a));
}
return 0;
}
|
27
|
13,089 |
int main()
{
int n=0,i=0;
cin>>n;
for(i=1;i<=n;i++)
{double a,b,c,d;
cin>>a>>b>>c;
d=b*b-4*a*c;
if(d==0)
{
if(b!=0)cout<<fixed<<setprecision(5)<<"x1=x2="<<(-b/(2*a))<<endl;
if(b==0)cout<<fixed<<setprecision(5)<<"x1=x2="<<b<<endl;
}
else if(d>0)
{
if(b!=0)cout<<fixed<<setprecision(5)<<"x1="<<(-b+sqrt(d))/(2*a)<<';'<<"x2="<<(-b-sqrt(d))/(2*a)<<endl;
if(b==0)cout<<fixed<<setprecision(5)<<"x1="<<sqrt(d)/(2*a)<<';'<<"x2="<<-sqrt(d)/(2*a)<<endl;
}
else if(d<0)
{
if(b!=0)cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<'+'<<sqrt(-d)/(2*a)<<'i'<<';'<<"x2="<<(-b)/(2*a)<<'-'<<sqrt(-d)/(2*a)<<'i'<<endl;
if(b==0)cout<<fixed<<setprecision(5)<<"x1="<<b<<'+'<<sqrt(-d)/(2*a)<<'i'<<';'<<"x2="<<b<<-sqrt(-d)/(2*a)<<'i'<<endl;
}
}
return 0;
}
|
27
|
13,090 |
int main ()
{
double a,b,c,d,e,q,x1,x2;
int n,i=0;
scanf("%d",&n);
while(i<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);
printf("x1=%.5f;x2=%.5f\n",x1,x2);}
if(d==0)
{x1=-b/(2*a);
printf("x1=x2=%.5f\n",x1);}
if(d<0)
{e=(sqrt(-d))/(2*a);
if(b!=0)
{q=(-b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",q,e,q,e);}
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",b,e,b,e);}
i=i+1;
}
return 0;
}
|
27
|
13,091 |
int main()
{
int n,i;
double t = 0.00001;
float a,b,c;
double x1,x2;
double j,w;
double delta;
scanf("%d",&n);
for (i = 0; i < n; i++)
{
a = b = c = 0;
delta = 0;
x1 = x2 = 0;
j = w = 0;
scanf("%f %f %f",&a,&b,&c);
delta = b * b - 4 * a * c;
if (abs(delta) < t)
{
x1 = - b / (2 * a);
printf("x1=x2=%.5f\n",x1);
}
else if(delta > 0)
{
x1 = (-b + sqrt(delta))/(2 * a);
x2 = (-b - sqrt(delta))/(2 * a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
w = -b / (2 * a);
if(w < t && w > -t)
w = 0;
j = sqrt(-delta)/ (2 * a);
if(j > 0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",w,j,w,j);
else
{
j = -j;
printf("x1=%.5f-%.5fi;x2=%.5f+%.5fi\n",w,j,w,j);
}
}
}
return 0;
}
|
27
|
13,092 |
main()
{
int j,n;
scanf("%d",&n);
for(j=0;j<n;j++)
{
float a,b,c,x1,x2;
scanf("%f %f %f",&a,&b,&c);
if ((b*b-4*a*c)>0)
printf("x1=%.5f;x2=%.5f\n",(double)(-b+sqrt(b*b-4*a*c))/(2*a),(double)(-b-sqrt(b*b-4*a*c))/(2*a));
if ((b*b-4*a*c)==0 )
printf("x1=x2=%.5f\n",-b/(2*a));
if ((b*b-4*a*c)<0){
if(b/(2*a)==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));
}
else
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));
}
}
}
|
27
|
13,093 |
main()
{
int n,i,j;
double a,b,c;
double x,y;
scanf("%d",&n);
float d[n][3];
for(i=0;i<n;i++)
{
scanf("%f %f %f",&d[i][0],&d[i][1],&d[i][2]);
}
for(j=0;j<n;j++)
{
a=d[j][0];
b=d[j][1];
c=d[j][2];
if((b*b-4*a*c)>0)
{
x=(-b+sqrt(b*b-4*a*c))/(2*a);
y=(-b-sqrt(b*b-4*a*c))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x,y);
}
else if((b*b-4*a*c)==0)
{
x=-b/(2*a);
printf("x1=x2=%.5f\n",x);
}
else
{
x=-b/(2*a);
y=sqrt(-b*b+4*a*c)/(2*a);
if(x==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",y,y);
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x,y,x,y);
}
}
}
|
27
|
13,094 |
int main(int argc, char* argv[])
{
int n,i;
scanf("%d\n",&n);
for(i=1;i<=n;i++){
double a,b,c,x1,x2;
scanf("%lf %lf %lf",&a,&b,&c);
double d=b*b-4*a*c;
if(d>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(d==0){
x1=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);}
else{
if(b!=0){
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);}
else{
x1=b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);}
}
}
return 0;
}
|
27
|
13,095 |
int main()
{
int n;
double a, b, c, delta ;//delta ????
double x1, x2, x1i, x2i ;//??x1i,x2i
cin>>n;
for( int i=1 ; i<=n ; i++ )
{
cin>>a>>b>>c ;
delta=b*b-4*a*c ;
if( delta>0 )
{
x1 = ( -b + sqrt( delta ) ) / ( 2*a ) ;
x2 = ( -b - sqrt( delta ) ) / ( 2*a ) ;
cout << fixed << setprecision(5)
<< "x1=" << ( ( abs( x1 )<10e-5 )? 0:x1) << ";"
<< "x2=" << ( ( abs( x2 )<10e-5 )? 0:x2) <<'\n' ;
}
else if( delta==0 )//??delta=0 ?????
{
x1 = x2 = -b / ( 2*a ) ;
cout<< fixed << setprecision(5) << "x1=x2=" << ( ( abs ( x1 )<10e-5 )? 0:x1) <<endl ;
}
else//delta<0?????
{
x1 = -b / ( 2*a ) ;
x2 = -b / ( 2*a ) ;
x1i = sqrt( -delta ) / ( 2*a ) ;
x2i = sqrt( -delta ) / ( 2*a ) ;
cout<< fixed << setprecision(5)
<< "x1=" << ( ( abs ( x1 )<10e-5 )? 0:x1) << "+" << x1i << "i" << ";"
<< "x2=" << ( ( abs ( x1 )<10e-5 )? 0:x1) << "-" << x2i << "i" <<endl ;
}
}
return 0;
}
|
27
|
13,096 |
int main( )
{ int n,i;
double a,b,c,delta,x1,x2,x11,x12;
cin >>n;
cout <<fixed <<setprecision(5); //???????5?
for (i=1;i<=n;i++)
{ cin >>a >>b >>c;
delta = b*b -4*a*c; //?????
if (delta==0) //????0????????
{ x1 = (-b/(2*a));
cout <<"x1=x2=" <<x1 <<endl;
}
else if (delta>0) //?????????????
{ x1 = (-b +sqrt(delta))/(2*a);
x2 = (-b -sqrt(delta))/(2*a);
cout <<"x1=" <<x1 <<";x2=" <<x2 <<endl;
}
else //???????????
{ delta = -delta;
x11 = (-b/(2*a));
if (fabs(x11) <0.00001) x11 = fabs(x11);
x12 = (sqrt(delta)) /(2*a);
x12 = fabs(x12);
cout <<"x1=" <<x11 <<'+' <<x12 <<"i;x2="
<<x11 <<'-' <<x12 <<'i' <<endl;
}
}
return 0;
}
|
27
|
13,097 |
int main()
{
int n,j;
double a,b,c;
double x1,x2;
double sb,xb;
scanf("%d",&n);
for (j=0;j<n;j++)
{
scanf("%lf %lf %lf",&a,&b,&c);
if ((b*b-4.0*a*c)>0)
{
x1=(-b+sqrt(b*b-4.0*a*c))/(2.0*a);
x2=(-b-sqrt(b*b-4.0*a*c))/(2.0*a);
printf("x1=%.5lf;x2=%.5lf\n",x1+1e-6,x2+1e-6);
}
else if (fabs(b*b-4.0*a*c)<1e-8)
{
x1=-b/(2.0*a);
printf("x1=x2=%.5lf\n",x1+1e-6);
}
else
{
sb=-b/(2.0*a);
xb=sqrt(4.0*a*c-b*b)/(2.0*a);
if (fabs(sb)<1e-8) sb=0;
if (fabs(xb)<1e-8) xb=0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",sb,xb,sb,xb);
}
}
return(0);
}
|
27
|
13,098 |
float f(double a,double b,double c)
{
double x1,x2,A;
A=b*b-4*a*c;
if(A>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",x1,x2);
};
if(0==A)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f",x1);
};
if(A<0)
{
double x3,x4;
x1=-b/(2*a);
if(0==x1)
{
x1=0;
}
x3=sqrt(-(b*b-4*a*c)/(4*a*a));
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",x1,x3,x1,x3);
};
return 0;
}
main()
{
double a[20],b[20],c[20];
int i,n,t;
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(i!=0)
printf("\n");
t=f(a[i],b[i],c[i]);
}
}
|
27
|
13,099 |
main()
{
double a,b,c,s,x1,x2;
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
s=b*b-4*a*c;
if(s>0) printf("x1=%.5f;x2=%.5f\n",(-b+sqrt(s))/(2*a)+0,(-b-sqrt(s))/(2*a)+0);
else if(s==0) printf("x1=x2=%.5f\n",-b/(2*a)+0);
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a)+0,sqrt(-s)/(2*a)+0,-b/(2*a)+0,sqrt(-s)/(2*a)+0);
}
}
|
27
|
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