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stringlengths 87
8.24k
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27
|
13300
|
int main()
{ double a,b,c,x1,x2,t1,t2;
int i,j,n;
scanf("%d",&n);
for(i=1;i<n+1;i++)
{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 (b*b-4*a*c<0) printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",-b/(2*a)+0,sqrt(-(b*b-4*a*c))/(2*a),-b/(2*a)+0,sqrt(-(b*b-4*a*c))/(2*a));
else
if (x1==x2) printf("x1=x2=%.5f\n",x1);
else
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
return 0;
}
|
27
|
13301
|
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
|
13302
|
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
|
13303
|
int main()
{
int i,n;
double a,b,c,x1,x2,disk,l[100],p[100],q[100],realpart,imagpart;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&l[i],&p[i],&q[i]);
}
for(i=0;i<n;i++)
{
a=l[i];
b=p[i];
c=q[i];
disk=b*b-4*a*c;
if(disk>0)
{
x1 = (-b + sqrt(disk))/(2*a);
x2 = (-b - sqrt(disk))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(disk==0)
{
x2 = (-b - sqrt(disk))/(2*a);
printf("x1=x2=%.5f\n",x2,x2);
}
else
{
realpart= (-b)/(2*a);
if(realpart==0) realpart=fabs(realpart);
imagpart= fabs(sqrt(-disk)/(2*a));
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",realpart,imagpart,realpart,imagpart);
}
}
return 0;
}
|
27
|
13304
|
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
|
13305
|
int main()
{
char x1,x2;
int n;
float a,b,c;
scanf("%d",&n);
int i;
for(i=1;i<=n;i++)
{
scanf("%f%f%f",&a,&b,&c);
float e;
e=b*b-4*a*c;
if(e>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));
else
if(e==0.0)
printf("x1=x2=%.5f\n",(-b)/(2*a));
else
if(b==0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(b)/(2*a),sqrt(-e)/(2*a),(b)/(2*a),(sqrt(-e))/(2*a));
else
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",(-b)/(2*a),sqrt(-e)/(2*a),(-b)/(2*a),(sqrt(-e))/(2*a));
}
return 0;
}
|
27
|
13306
|
//********************************
//*????6.cpp **
//*?????? 1300012966 **
//*???2013. **
//*???????????? **
//********************************
int main()
{
int n, i;
double a[100], b[100], c[100], d, x1, x2, e, f;
cin >> n;
for (i=1; i<=n; i++)
{
cin >> a[i] >> b[i] >> c[i];
} //????
for (i=1; i<=n; i++)
{
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]);
cout << "x1=";
printf ("%.5f", x1);
cout << ";" << "x2=";
printf ("%.5f\n", x2);
} //?????????
if (d == 0)
{
x1 = - b[i] / (2 * a[i]);
if (x1 == 0)
{
x1 = 0;
}
cout << "x1=x2=";
printf ("%.5f\n", x1);
} //?????????
if (d < 0)
{
e = - b[i] / (2 * a[i]);
if (e == 0)
{
e =0;
}
f = sqrt(- d) / (2 * a[i]);
cout << "x1=";
printf ("%.5f", e);
cout << "+";
printf ("%.5f", f);
cout << "i" << ";" << "x2=";
printf ("%.5f", e);
cout << "-";
printf ("%.5f", f);
cout << "i" << endl;
} //???????
}
return 0;
}
|
27
|
13307
|
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
|
13308
|
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
|
13309
|
int main(int argc, char* argv[])
{
int n,r=1;
float a,b,c,a1,a2;
double x1,x2,w;
scanf("%d",&n);
while (r<=n)
{
scanf("%f%f%f",&a,&b,&c);
r++;
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if (b*b-4*a*c>0)
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
else
{
if (b*b-4*a*c==0)
printf("x1=x2=%.5lf\n",x1);
else
{
a1 = (-b)/(2*a);
a2 = (-b)/(2*a);
w = sqrt(-(b*b-4*a*c))/(2*a);
if (b!=0)
printf ("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",a1,w,a2,w);
else
printf ("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",w,w);
}
}
}
return 0;
}
|
27
|
13310
|
main()
{
int i,n;
double d,e,p,q,t,a[100],b[100],c[100];
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++)
{
t=b[i]*b[i]-4*a[i]*c[i];
if(t<0)
{
d=-b[i]/(a[i]*2);
p=sqrt(-t)/(2*a[i]);
q=sqrt(-t)/(2*a[i]);
if(d==0)
{
d=0.00000;
}
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",d,p,d,q);
}
else if(fabs(t-0)<0.00000001)
{
d=-b[i]/(2*a[i]);
printf("x1=x2=%.5lf\n",d);
}
else
{
d=(-b[i]+sqrt(t))/(2*a[i]);
e=(-b[i]-sqrt(t))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",d,e);
}
}
}
|
27
|
13311
|
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
|
13312
|
int main()
{
int n;
double a, b, c, delta;
double real1, real2, i1, i2, x1, x2;
int zero(double a);
scanf("%d", &n);
while (n > 0)
{
scanf("%lf %lf %lf", &a, &b, &c);
delta = b * b - 4 * a * c;
if (zero(delta) == 1)
{
x1 = (-b + sqrt(delta)) / (2 * a);
x2 = (-b - sqrt(delta)) / (2 * a);
// if (!zero(x1)) x1 = 0;
// if (!zero(x2)) x2 = 0;
printf("x1=%.5lf;x2=%.5lf\n", x1, x2);
}
else if (zero(delta) == 0)
{
x1 = (-b + sqrt(delta)) / (2 * a);
// if (!zero(x1)) x1 = 0;
printf("x1=x2=%.5lf\n", x1);
}
else
{
delta = -delta;
real1 = -b / (2 * a);
real2 = -b / (2 * a);
i1 = sqrt(delta) / (2 * a);
i2 = sqrt(delta) / (2 * a);
// if (!zero(real1)) real1 = 0;
// if (!zero(real2)) real2 = 0;
// if (!zero(i1)) i1 = 0;
// if (!zero(i2)) i2 = 0;
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", real1, i1, real2, i2);
}
n--;
}
return 0;
}
int zero(double a)
{
if (fabs(a) > 1e-6)
if (a > 0) return 1;
else return -1;
else return 0;
}
|
27
|
13313
|
//*******************************
//**6.cpp?????????***
//**??????1300012993****
//**??:2013.10.10****
//*******************************
int main()
{
int n;
double a, b, c, x1, x2, d, p, q;
char i;
cin >> n;
for(i = 1; i <= n; i++)
{
cin >> a >> b >> c;
d = b * b - 4 * a * c; //???????
if(d > 0) //d??0,???????
{if(b != 0) //b??0??????????-0
{
b = -b;
}
x1 = (b + sqrt(d)) / (2 * a); //?????
x2 = (b - sqrt(d)) / (2 * a);
cout << fixed;
cout << "x1=" << setprecision(5) << x1 << ";"; //???????????
cout << "x2=" << setprecision(5) << x2 << endl;}
else
if(d < 0) //?????
{ if(b != 0) //????-0
{
b = -b;
}
p = b / (2 * a); //????
q = sqrt(-d) / (2 * a); //?????????
cout << fixed;
cout << "x1=" << setprecision(5) << p; //??????
cout << "+" << setprecision(5) << q;
cout << 'i' << ";" << "x2=" << setprecision(5) << p;
cout << "-" << setprecision(5) << q << 'i' << endl;
}
else //????????d??0??????
{if(b != 0)
{
b = -b; //????-0
}
x1 = b / (2 * a); //????????
x2 = b / (2 * a);
cout << "x1=x2=";
cout << fixed;
cout << setprecision(5) << x1 << endl;} //????
}
return 0;
}
|
27
|
13314
|
main()
{
int i,n;
double a[100],b[100],c[100],d[100],x[100],y[100];
scanf("%d",&n);
i=0;
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
i=0;
while(i<n)
{
if(b[i]*b[i]-4*a[i]*c[i]>=0)
{
x[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
y[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
if(x[i]==y[i])
printf("x1=x2=%.5lf\n",x[i]);
else printf("x1=%.5lf;x2=%.5lf\n",x[i],y[i]);
}
else
{
if(b[i]==0)
{
d[i]=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
x[i]=b[i]/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x[i],d[i],x[i],d[i]);
}
else
{
d[i]=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
x[i]=-b[i]/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x[i],d[i],x[i],d[i]);
}
}
i=i+1;
}
}
|
27
|
13315
|
int main()
{
int n,i;
double a,b,c,x1,x2,s,t;
scanf("%d\n",&n);
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
if(b*b-4*a*c==0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
printf("x1=x2=%.5f\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=%.5f;x2=%.5f\n",x1,x2);
}
if(b*b-4*a*c<0)
{
s=(sqrt(4*a*c-b*b))/(2*a);
t=((-1.0)*b)/(2*a);
if(t!=0)
{
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",t,s,t,s);
}
if(t==0)
{
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",s,s);
}
}
}
}
|
27
|
13316
|
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
|
13317
|
int main()
{
int n,i,j;
double a[100][3],t;
scanf("%d",&n);
for(i=0;i<n;i++)
{
for(j=0;j<3;j++)
{
scanf("%lf",&a[i][j]);
}
}
for(i=0;i<n;i++)
{
t=-a[i][1]/(2*a[i][0]);
if(a[i][1]==0.0) t=0;
if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]==0)
printf("x1=x2=%.5lf\n",t);
else if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]>0)
printf("x1=%.5lf;x2=%.5lf\n",(-a[i][1]+sqrt(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]))/(2*a[i][0]),(-a[i][1]-sqrt(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]))/(2*a[i][0]));
else if(a[i][1]*a[i][1]-4*a[i][0]*a[i][2]<0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",t,sqrt(4*a[i][0]*a[i][2]-a[i][1]*a[i][1])/(2*a[i][0]),t,sqrt(4*a[i][0]*a[i][2]-a[i][1]*a[i][1])/(2*a[i][0]));
}
return 0;
}
|
27
|
13318
|
/*
* ????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
|
13319
|
int main(){
int n;
cin>>n;
for(int i=0;i<n;i++){
double a,b,c;
cin>>a>>b>>c;
double d=b*b-4*a*c;
if(abs(d)<1e-8)d=0;
double e=-b/2/a;
if(abs(e)<1e-8)e=0;
if(abs(d)<1e-8)printf("x1=x2=%.5f",e);
else if(d>0)printf("x1=%.5f;x2=%.5f",e+sqrt(d)/2/a,e-sqrt(d)/2/a);
else {
d=abs(d);
if(a>0)
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi",e,sqrt(d)/2/a,e,sqrt(d)/2/a);
else printf("x1=%.5f-%.5fi;x2=%.5f+%.5fi",e,-sqrt(d)/2/a,e,-sqrt(d)/2/a);
}
cout<<endl;
}
return 0;
}
|
27
|
13320
|
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
|
13321
|
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
|
13322
|
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
|
13323
|
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
|
13324
|
int main()
{
int n,i;
double a,b,c,x1,x2,f,g;
cin>>n;
cout<<fixed;
for(i=1;i<=n;i=i+1)
{
cin>>a>>b>>c;
f=-b/(2*a);
g=sqrt(4*a*c-b*b)/(2*a);
if(f==-0)
{
f=-f;
}
if((b*b-4*a*c)<0)
{
cout<<setprecision(5)<<"x1="<<f<<"+"<<g<<"i"<<";"<<"x2="<<f<<"-"<<g<<"i"<<endl;
}
else if((b*b-4*a*c)==0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
cout<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
x2=(-b-sqrt(b*b-4*a*c))/(2*a);
cout<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
}
return 0;
}
|
27
|
13325
|
main()
{
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
double ai,bi,ci,di,ei,fi,gi,x1i,x2i;
scanf("%lf %lf %lf",&ai,&bi,&ci);
di=bi*bi-4*ai*ci ;
if(di>0)
{
gi= sqrt(di);
x1i=(-bi+gi)/(2*ai);
x2i=(-bi-gi)/(2*ai);
printf("x1=%.5lf;x2=%.5lf\n",x1i,x2i);
}
else if(di==0)
{
x1i=x2i=(-bi)/(2*ai);
printf("x1=x2=%.5lf\n",x1i);
}
else if(di<0)
{
gi=sqrt(-di) ;
if(bi==0) ei=bi/(2*ai);
else
{
ei=-bi/(2*ai);
}
fi=(gi)/(2*ai);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",ei,fi,ei,fi);
}
}
}
|
27
|
13326
|
/*
* ?????????????.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
|
13327
|
int main()
{
int n,j;
double a[100],b[100],c[100],x1,x2,t;
double u,v;
scanf("%d",&n);
for(j=0;j<n;j++){
scanf("%lf%lf%lf",&a[j],&b[j],&c[j]);
}
for(j=0;j<n;j++){
t=b[j]*b[j]-4*a[j]*c[j];
if(t>0){
x1=(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2=(-b[j] - sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(t==0){
x1=(-b[j] + sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
x2=(-b[j] - sqrt(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=x2=%.5lf\n",x1);
}
if(t<0){
u=-b[j]/(2*a[j]);
v=sqrt(-(b[j]*b[j]-4*a[j]*c[j]))/(2*a[j]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",u,v,u,v);
}
}
return 0;
}
|
27
|
13328
|
main()
{ int n,k;
double x1,x2,a,b,c,d,e;
scanf("%d",&n);
k=1;
do{scanf("%lf%lf%lf",&a,&b,&c);
d=b*b-4*a*c;
if(d>=0)
{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);
k=k+1;}
else
{
printf("x1=x2=%.5f\n",-b/(2*a));
k=k+1;}
}
else
{if(b==0)
printf("x1=0.00000+%.5fi;x2=0.00000-%.5fi\n",sqrt(-b*b+4*a*c)/(2*a),sqrt(-b*b+4*a*c)/(2*a));
else
{ e=(-b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,sqrt(-b*b+4*a*c)/(2*a),e,sqrt(-b*b+4*a*c)/(2*a));
}k=k+1;}
}while(k<=n) ;
}
|
27
|
13329
|
//****************************
//**Title:?????????**
//**Author:???1300017687 **
//**Date?2013.10.9 **
//**File?6.cpp **
//****************************
int main()
{
int n; //??n???????
cin >> n; //??n
for ( int i = 1;i <= n; i++) //??i?1?n???
{ //????
double a,b,c; //?????????a,b,c
cin >> a >> b >> c; //??a,b,c
double delta = b * b - 4 * a * c;//?????delta
double line = - b / (2*a); //?????????line?-b/(2*a)
cout << fixed << setprecision(5); //?????cout???????5?
if ( line == -0 ) //??line?-0
line = 0; //??????0 *****?????????0?????*****
if ( delta == 0 ) //??delta?0
cout << "x1=x2=" << line << endl; //??x1=x2=line
else if (delta > 0) //?????delta > 0
cout << "x1=" << line + sqrt(delta)/(2*a) //????x1?x2
<< ";x2="<< line - sqrt(delta)/(2*a)
<< endl;
else //??
cout << "x1=" << line << "+" //????????x1?x2
<< (sqrt(-delta))/(2*a)<< "i;"
<< "x2=" << line << "-"
<< (sqrt(-delta))/(2*a)<< "i"
<< endl;
}
cin.get();
cin.get();
return 0;
}
|
27
|
13330
|
int main()
{
double n,m,a,b,c,x1,x2,h,j;
cin>>n;
for(m=1;m<=n;m++)
{
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(-0.000001<x1&&x1<0)
x1=0.00000;
if(-0.000001<x2&&x2<0)
x2=0.00000;
cout<<"x1=";
printf("%.5f",x1);
cout<<";x2=";
printf("%.5f",x2);
cout<<endl;
}
else if(b*b-4*a*c==0)
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
if(-0.000001<x2&&x2<0)
x2=0.00000;
cout<<"x1=x2=";
printf("%.5f",x1);
cout<<endl;
}
else
{
h=-b/(2*a);
j=sqrt(4*a*c-b*b)/(2*a);
if(h==-0.00000)
h=0.00000;
if(j==-0.00000)
j=0.00000;
cout<<"x1=";
printf("%.5f",h);
cout<<"+";
printf("%.5f",j);
cout<<"i";
cout<<";x2=";
printf("%.5f",h);
cout<<"-";
printf("%.5f",j);
cout<<"i"<<endl;
}
}
return 0;
}
|
27
|
13331
|
int main(int argc, char* argv[])
{
double a,b,c;
int n;
double x1,x2,m,p,q;
int i=0;
scanf ("%d",&n);
for (i=0;i<n;i++)
{ scanf ("%lf%lf%lf",&a,&b,&c);
m=b*b-4*a*c;
if (m==0)
{
x1=(-b)/(2*a);
x2=(-b)/(2*a);
printf ("x1=x2=%.5lf\n",x1);
}
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=%.5lf;x2=%.5lf\n",x1,x2);
}
if (m<0)
{
p=(-b)/(2*a) ;
q= (sqrt(-b*b+4*a*c)/(2*a));
printf ("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
return 0;
}
|
27
|
13332
|
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
|
13333
|
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
|
13334
|
int main(int argc, char* argv[])
{
int n,i;
scanf("%d",&n);i=n;
double a[n],b[n],c[n];
double x1[n],x2[n];
for(;n>0;n--){
scanf("%lf %lf %lf",&a[n],&b[n],&c[n]);
if(b[n]*b[n]-4*a[n]*c[n]<0){
x1[n]=-b[n]/(2*a[n]);
x2[n]=sqrt(4*a[n]*c[n]-b[n]*b[n])/(2*a[n]);
}
else {
x1[n]=(-b[n]+sqrt(b[n]*b[n]-4*a[n]*c[n]))/(2*a[n]);
x2[n]=(-b[n]-sqrt(b[n]*b[n]-4*a[n]*c[n]))/(2*a[n]);
}
}
for(;i>0;i--){
if(b[i]*b[i]-4*a[i]*c[i]>0) printf("x1=%.5lf;x2=%.5lf\n",x1[i],x2[i]);
else if(x1[i]-x2[i]==0) printf("x1=x2=%.5lf\n",x1[i]);
else if(b[i]*b[i]-4*a[i]*c[i]<0) printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1[i],x2[i],x1[i],x2[i]);
}
return 0;
}
|
27
|
13335
|
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
|
13336
|
int main(int argc, char* argv[])
{
int n,j;
scanf("%d",&n);
double a,b,c;
for(j=0;j<n;j++){
scanf("%lf %lf %lf",&a,&b,&c);
if((b*b-4*a*c)>0){
double x1,x2;
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){
if(b!=0){
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));
}else{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",0.00000,sqrt(4*a*c-b*b)/(2*a),0.00000,sqrt(4*a*c-b*b)/(2*a));
}
}
if((b*b-4*a*c)==0){
double x1,x2;
x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
return 0;
}
|
27
|
13337
|
int main()
{
int n;
float a,b,c;
cin>>n;
while(n>0){
double x,y,xi,yi,d;
cin>>a>>b>>c;
d=b*b-4*a*c; //?????
if(d>0)
{x =(-b+sqrt(d))/(2*a) ; //d>0?????
y =(-b-sqrt(d))/(2*a) ;
cout<<"x1="<<fixed<<setprecision(5)<<x<<";x2="<<fixed<<setprecision(5)<<y<<endl;
}
else if((d)==0)
{x=(-b)/(2*a);
cout<<"x1=x2="<<fixed<<setprecision(5)<<x<<endl;} //d=0??????
else
{if(b!=0)
x=(-b)/(2*a);
else
x=b/(2*a);
xi=sqrt(-d)/(2*a);
yi=sqrt(-d)/(2*a);
cout<<"x1="<<fixed<<setprecision(5)<<x<<"+"<<fixed<<setprecision(5)
<<xi<<"i;x2="<<fixed<<setprecision(5)<<x<<"-"
<<fixed<<setprecision(5)<<yi<<"i"<<endl; } //d<0?????
n--;
}
return 0;
}
|
27
|
13338
|
int main(int argc, char* argv[])
{
int n,i;
scanf("%d",&n);
for (i=1;i<=n;i++)
{
double a,b,c,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
if (a!=0)
{
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=%.5f\n",x1);
}
else
{
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
}
else
{
double t;
t=sqrt(4*a*c-b*b)/(2*a);
x1=-b/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,t,x1,t);
}
}
}
return 0;
}
|
27
|
13339
|
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
|
13340
|
int main()
{
int n;
double a, b, c;
double delta, x1, x2, real_figure, unreliable_figure; //??????delta????real_figure?????unreliable_figure??
cin >> n; //???????
for(int i = 1; i <= n; i++) //??n??????????
{
cin >> a >> b >> c;
delta = b * b - 4 * a * c; //??delta
if(delta >= 0) //??delta????????????????????
{
x1 = (-b + sqrt(delta))/(2 * a);
x2 = (-b - sqrt(delta))/(2 * a); //?????x1?x2
if(x1 == x2) //?????????????????
cout << fixed << setprecision(5) << "x1=x2=" << x2 << endl;
else //????????????????
cout << fixed << setprecision(5) << "x1=" << x1 << ";x2=" << x2 << endl;
}
else //delta??????????????
{
real_figure = b / (2 * a);
if(real_figure != 0)
real_figure = -real_figure;
unreliable_figure = sqrt(-delta) / (2 * a);
cout << fixed << setprecision(5);
//????????????????
cout << "x1=" << real_figure << "+" << unreliable_figure << "i;x2=" << real_figure << "-" << unreliable_figure << "i" << endl;
}
}
return 0;
}
|
27
|
13341
|
//**************************
//*???????????? (1051)**
//*?????? 1200012888 **
//*???2013.10.10**
//**************************
int main()
{
double a , b , c , x1 ,x2; //????a b c????x1 x2
int n; //?????? n
cin>>n; //??n
for (int i = 1 ; i <= n ; i++) //???????????????
{
cin>>a>>b>>c; //?? ?? a b c
if (sqrt(b*b-4*a*c)>0) //??????????
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a); //??????? x1 x2
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
//??x1 x2 ????????
}
else 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);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
//??x1=x2=... ????????
}
else //???? ??i????????
{
if ((-b)/(2*a) != 0) //????????????? -0
{
cout<<fixed<<setprecision(5)<<"x1="<<(-b)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<";";
//?? x1 ? ????? ??????
cout<<fixed<<setprecision(5)<<"x2="<<(-b)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
//?? x2 ? ????? ??????
}
else
{
cout<<fixed<<setprecision(5)<<"x1="<<(b)/(2*a)<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<";";
//?? x1 ? ????? ??????
cout<<fixed<<setprecision(5)<<"x2="<<(b)/(2*a)<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
//?? x2 ? ????? ??????
}
}
}
return 0;
}
|
27
|
13342
|
//***************************************************
//*????????????.cpp **
//*????? 1100012808 **
//*???2011.09.25 **
//*???????????????????? **
//***************************************************
int main()
{
int n,i;
float a,b,c;
double 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);
cout << fixed << "x1=" << setprecision(5) << x1 << ";" << "x2=" << setprecision(5) << x2 << endl;
}
else if ((b*b-4*a*c)==0)
{
x1=(-b+sqrt(b*b-4*a*c))/(2*a);
cout << fixed << setprecision(5) << "x1=x2=" << x1 << endl;
}
else
{
cout << "x1=" << fixed << setprecision(5) << -b/(2*a)+1-1 << setprecision(5) << "+" <<sqrt(4*a*c-b*b)/(2*a) << 'i' << ";";
cout << "x2=" << fixed << setprecision(5) << -b/(2*a)+1-1 << setprecision(5) << -sqrt(4*a*c-b*b)/(2*a) << 'i' << endl;
}
}
return 0;
}
|
27
|
13343
|
double fuhao(double x)
{
double result;
if ((x<0)&&(0-x<0.00001))
result=0;
else result=x;
return result;
}
int main()
{
double a[100],b[100],c[100],x1[100],x2[100],delta[100];
int n,i,decide[100];
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
delta[i]=b[i]*b[i]-4*a[i]*c[i];
//printf("input done,delta=%f\n",delta[i]);
}
for (i=0;i<n;i++)
{
if (delta[i]>0) decide[i]=1;
else
if (delta[i]<0) decide[i]=-1;
else decide[i]=0;
if (decide[i]==1)
{
printf("x1=%.5f;x2=%.5f\n",(fuhao((0-b[i]+sqrt(delta[i]))/(2*a[i]))),(fuhao((0-b[i]-sqrt(delta[i]))/(2*a[i]))));
}
else
if (decide[i]==0) printf("x1=x2=%.5f\n",fuhao((0-b[i])/(2*a[i])));
else printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",fuhao((0-b[i])/(2*a[i])),(sqrt(-delta[i]))/(2*a[i]),fuhao((0-b[i])/(2*a[i])),((sqrt(-delta[i]))/(2*a[i])));
}
return 0;
}
|
27
|
13344
|
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
|
13345
|
main()
{
int n,i;
scanf("%d",&n);
double a,b,c,p,x1,x2;
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=%.5f;x2=%.5f\n",x1,x2);
}
else if(p==0)
{
x2=x1=(-b+sqrt(p))/(2*a);
printf("x1=x2=%.5f\n",x1);
}
else
{
x1=(-b)/(2*a);
x2=(sqrt(-p))/(2*a);
if(x1==-0)
x1=0;
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,x2,x1,x2);
}
}
}
|
27
|
13346
|
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
|
13347
|
int main(){
int n;
double a,b,c,j,x1,x2,m;
cin>>n;
do
{n--;
cin>>a>>b>>c;
x1=(-b + sqrt(b*b-4*a*c))/(2*a) ;
x2=(-b - sqrt(b*b-4*a*c))/(2*a);
m=(-b)/(2*a);
j=b*b-4*a*c ;
cout<<fixed<<setprecision(5);
if(x1<0.00001&&x1>-0.00001) x1=0;
if(x2<0.00001&&x2>-0.00001) x2=0;
if(j>0) cout<<"x1="<<x1<<";x2="<<x2<<endl;
else if(j==0) cout<<"x1=x2="<<x1<<endl;
else {if(m<0.00001&&m>-0.00001) m=0;
cout<<"x1="<<m<<"+"<<sqrt(-b*b+4*a*c)/(2*a)<<"i";
cout<<";x2="<<m<<"-"<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;}
}while(n>=1);
return 0;
}
|
27
|
13348
|
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
|
13349
|
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
|
13350
|
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
|
13351
|
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
|
13352
|
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
|
13353
|
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
|
13354
|
int main()
{
int e,i;
double a[50],b[50],c[50];
scanf("%d",&e);
for(i=0;i<e;i++)
{
scanf("%lf%lf%lf",&a[i],&b[i],&c[i]);
}
double delta,m,n,x1,x2;
for (i=0;i<e;i++)
{
delta=b[i]*b[i]-4*a[i]*c[i];
m=-(b[i]/(2*a[i]));
n=sqrt(fabs(delta))/(a[i]*2);
if(a[i]!=0)
{
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+%.5lfi;",m,n);
printf("x2=%.5lf-%.5lfi\n",m,n);
}
}
else if (a[i]==0)
{
double g;
g=-c[i]/b[i];
printf("x1=x2=%.5lf",g);
}
}
return 0;
}
|
27
|
13355
|
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
|
13356
|
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
|
13357
|
int main()
{
int n,i;
double ai,bi,ci,k,x1,x2,d,e;
cin>>n;
for(i=1;i<=n;i++){
cin>>ai>>bi>>ci;
k=bi*bi-4*ai*ci;
if(k>0){
x1=(-bi+sqrt(k))/(2*ai);
x2=(-bi-sqrt(k))/(2*ai);
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";"<<"x2="<<x2<<endl;
}
if(k==0){
x1=x2=(-bi)/(2*ai);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
if(k<0){
d=(-bi)/(2*ai);
e=(sqrt(-k))/(2*ai);
if(d!=0)
cout<<fixed<<setprecision(5)<<"x1="<<d<<"+"<<e<<"i"<<";"<<"x2="<<d<<"-"<<e<<"i"<<endl;
if(d==0)
cout<<fixed<<setprecision(5)<<"x1="<<abs(d)<<"+"<<e<<"i"<<";"<<"x2="<<abs(d)<<"-"<<e<<"i"<<endl;
}
}
return 0;
}
|
27
|
13358
|
void gen(double a,double b,double c);
int main()
{
double *a,*b,*c;
int n,i;
scanf("%d",&n);
a=(double*)malloc(n*sizeof(double));
b=(double*)malloc(n*sizeof(double));
c=(double*)malloc(n*sizeof(double));
for(i=0;i<=n-1;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<=n-1;i++)
{
gen(a[i],b[i],c[i]);
}
free(a);
free(b);
free(c);
return 0;
}
void gen(double a,double b,double c)
{
double d,x1,x2,i1;
d=b*b-4*a*c;
if(d>0)
{
x1=(0-b+sqrt(d))/(2*a);
x2=(0-b-sqrt(d))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{
if (d==0) printf("x1=x2=%.5f\n",(0-b)/(2*a));
else
{
x1=(0-b)/(2*a);
i1=(sqrt(0-d))/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",x1,i1,x1,i1);
}
}
}
|
27
|
13359
|
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
|
13360
|
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
|
13361
|
/*
* ????dz.cpp
* ??????
* ????:2012-10-13
* ????????????
*/
int main(){
float a=0,b=0,c=0; //????a,b,c
int i,n; //????n
double d,e; //????d,e
cin>>n; //?????????n
for(i=1;i<=n;i=i+1) //?for???n???
{
cin>>a>>b>>c; //????a,b,c
if(b*b-4*a*c>0) //????????
{
d=(-b + sqrt(b*b-4*a*c))/(2*a); //??x1??
e=(-b - sqrt(b*b-4*a*c))/(2*a); //??x2??
if(d>-0.00001) //???????????5????-0????????
d=fabs(d);
if(e>-0.00001) //???????????5????-0????????
e=fabs(e);
cout<<"x1="<<fixed<<setprecision(5)<<d //???x1=...;x2=...(???????5?)
<<";x2="<<fixed<<setprecision(5)<<e<<endl;
}
else if(b*b-4*a*c==0) //???????
{
d=-b/(2*a); //?????x1,x2??
if(d>-0.00001) //???????????5????-0????????
d=fabs(d);
cout<<"x1=x2="<<fixed<<setprecision(5)<<d<<endl; //???x1=x2=...(???????5?)
}
else //????????
{
d=-b/(2*a); //????x1,x2?????
if(d>-0.00001) //???????????5????-0????????
d=fabs(d);
cout<<"x1="<<fixed<<setprecision(5)<<d<<"+" //???x1=??+??i;x2=??-??i
<<fixed<<setprecision(5)<<sqrt(-b*b+4*a*c)/(2*a)<<"i"
<<";x2="<<fixed<<setprecision(5)<<d<<"-"
<<fixed<<setprecision(5)<<sqrt(-b*b+4*a*c)/(2*a)<<"i"<<endl;
}
}
return 0; //?????
}
|
27
|
13362
|
int main ()
{
int n,m;
scanf ("%d\n",&n);
double a[n],b[n],c[n],x1[n],x2[n],p[n],r[n],s[n];
for (m=0;m<n;m++)
{
scanf ("%lf %lf %lf\n",&a[m],&b[m],&c[m]);
if (b[m]*b[m]-4*a[m]*c[m]>0)
{
x1[m]=(-b[m] + sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
x2[m]=(-b[m] - sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
}
else if (b[m]*b[m]-4*a[m]*c[m]==0)
{
x1[m]=(-b[m] + sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
x2[m]=(-b[m] - sqrt(b[m]*b[m]-4*a[m]*c[m]))/(2*a[m]);
}
else
{
if (b[m]/(2*a[m])==0)
{p[m]=b[m]/(2*a[m]);}
else
{p[m]=-b[m]/(2*a[m]);}
r[m]=sqrt(4*a[m]*c[m]-b[m]*b[m])/(2*a[m]);
s[m]=-sqrt(4*a[m]*c[m]-b[m]*b[m])/(2*a[m]);
}
}
for (m=0;m<n;m++)
{
if (b[m]*b[m]-4*a[m]*c[m]>0)
{
printf ("x1=%.5lf;x2=%.5lf\n",x1[m],x2[m]);
}
else if (b[m]*b[m]-4*a[m]*c[m]==0)
{
printf ("x1=x2=%.5lf\n",x1[m]);
}
else
{
printf ("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n",p[m],r[m],p[m],s[m]);
}
}
return 0;
}
|
27
|
13363
|
main()
{
int n,i;
scanf("%d",&n);
for(i=1;i<=n;i++)
{
double a,b,c,D,Re,Im,x1,x2;
scanf("%lf%lf%lf",&a,&b,&c);
D=b*b-4*a*c;
if(D>0)
{
x1=(0-b+sqrt(D))/(2*a);
x2=(0-b-sqrt(D))/(2*a);
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if(D==0)
{
x1=(0-b)/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
else
{
Re=(0-b)/(2*a);
Im=sqrt(-D)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",Re,Im,Re,Im);
}
}
}
|
27
|
13364
|
// 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
|
13365
|
/*
* equation.cpp
*
* Created on: 2013-10-23
* Author: Mac
*/
/*
* 9898989.cpp
*
* Created on: 2013-9-26
* Author: Mac
*/
int main()
{
int n;
double a,b,c,x1,x2,xr,xi;//define roots and real part and i part
cin>>n;
while (n--)
{
cin>>a>>b>>c;
if ((b*b-4*a*c)==0)
{
x1 = (-b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1=x2="<<x1<<endl;
}
else if
((b*b-4*a*c)<0)
{
xr = (-b)/(2*a);
if (fabs(xr)<(1e-6)) xr = 0;
xi = sqrt(4*a*c-b*b)/(2*a);
cout<<fixed<<setprecision(5)<<"x1="<<xr<<"+"<<xi<<"i;x2="<<xr<<"-"<<xi<<"i"<<endl;
}
else
{
x1 = (-b + sqrt(b*b-4*a*c))/(2*a);
x2 = (-b - sqrt(b*b-4*a*c))/(2*a);
if (fabs(x1)<(1e-6)) x1 = 0;
if (fabs(x2)<(1e-6)) x2 = 0;
cout<<fixed<<setprecision(5)<<"x1="<<x1<<";x2="<<x2<<endl;
}
}
return 0;
}
|
27
|
13366
|
/**
* @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
|
13367
|
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
|
13368
|
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
|
13369
|
int main()
{
double m[2][99],x[99],a,b,c;
int i,n;
scanf("%d",&n);
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
x[i]=b*b-4*a*c;
if(x[i]>0)
{
m[0][i]=(-b+sqrt(x[i]))/(2*a);
m[1][i]=(-b-sqrt(x[i]))/(2*a);
}
else
{
if(x[i]==0)
{
m[0][i]=(-b)/(2*a);
}
else
{
m[0][i]=(-b)/(2*a);
m[1][i]=sqrt(-x[i])/(2*a);
}
}
}
for(i=0;i<n;i++)
{
if(x[i]>0)
{
printf("x1=%.5lf;x2=%.5lf\n",m[0][i],m[1][i]);
}
else
{
if(x[i]==0)
{
printf("x1=x2=%.5lf\n",m[0][i]);
}
else
{
if(m[0][i]==0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-m[0][i],m[1][i],-m[0][i],m[1][i]);
}
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",m[0][i],m[1][i],m[0][i],m[1][i]);
}
}
}
return 0;
}
|
27
|
13370
|
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
|
13371
|
//?????????
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
|
13372
|
//****************************************
//*?? ????????? **
//*?????? 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
|
13373
|
//***********************************
//* ????6.cpp *
//* ????? *
//* ???2013.10.9 *
//* ???????????? *
//***********************************
int main()
{
int n , i ;
double root1 , root2, a , b , c ;
cin >> n ;
for (i = 0 ; i < n ; i++)
{
cin >> a >> b >> c ;
cout << fixed;
if ( b * b - 4.0 * a * c > 0)
{
root1 = ( -b + sqrt( b * b - 4 * a * c ))/( 2 * a ) ;
root2 = ( -b - sqrt( b * b - 4 * a * c ))/( 2 * a ) ;
cout << setprecision(5) << "x1=" << root1 << ";x2=" << root2 << endl ;
}
else if ( b * b - 4.0 * a * c == 0)
{
cout << setprecision(5) << "x1=x2=" << -b/(2*a) <<endl;
}
else
{
if (b == 0.0)
{
b= -b ;
}
root1 = sqrt( -b * b + 4 * a * c )/( 2 * a );
root2 = sqrt( -b * b + 4 * a * c )/( 2 * a );
cout << setprecision(5) << "x1=" << -b/(2*a) << "+" << root1 << "i;x2=" << -b/(2*a) << "-" << root2 << "i" << endl ;
}
}
return 0 ;
}
|
27
|
13374
|
main()
{
int n,j;
double a,b,c;
double p,q,r,u,v,t;
double x1,x2;
char i;
scanf("%d",&n);
double m[100][3];
for(j=0;j<n;j++)
{
scanf("%lf%lf%lf\n",&a,&b,&c);
m[j][0]=a;
m[j][1]=b;
m[j][2]=c;
}
for(j=0;j<n;j++)
{
p=m[j][0];
q=m[j][1];
r=m[j][2];
t=q*q-4*p*r;
if(t>0)
{
double p1;
p1=2*p;
x1=(-q+sqrt(t))/p1;
x2=(-q-sqrt(t))/p1;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else
{
if(t==0)
{
x1=-q/(2*p);
x2=-q/(2*p);
printf("x1=x2=%.5lf\n",x1);
}
else
{
u=sqrt(-t)/(2*p);
v=(-q)/(2*p);
if(v!=0)
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",v,u,v,u);
else
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",u,u);
}
}
}
getchar();
getchar();
getchar();
getchar();
}
|
27
|
13375
|
int main()
{
int n;
cin>>n;
while(n--)
{
float a,b,c;
cin>>a>>b>>c;
double delta=b*b-4*a*c;
cout<<fixed<<setprecision(5);
if(delta>0)
{
double x1=(-b+sqrt(delta))/(2*a);
double x2=(-b-sqrt(delta))/(2*a);
if(x1==-0.0) x1=0.0;
if(x2==-0.0) x2=0.0;
cout<<"x1="<<x1<<";x2="<<x2<<endl;
continue;
}
if(delta==0)
{
double x=-b/(2*a);
if(x==-0.0) x=0.0;
cout<<"x1=x2="<<x<<endl;
continue;
}
if(delta<0)
{
double re=-b/(2*a);
double im=sqrt(-delta)/(2*a);
if(re==-0.0) re=0.0;
cout<<"x1="<<re<<"+"<<im<<"i;x2="<<re<<"-"<<im<<"i"<<endl;
}
}
return 0;
}
|
27
|
13376
|
int main()
{
double a[len],b[len],c[len],x[len],y[len],x1,x2,d;
int n,i;
char m='i';
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){
x[i]=(-b[i]+sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
y[i]=(-b[i]-sqrt(b[i]*b[i]-4*a[i]*c[i]))/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n",x[i],y[i]);
}
if((b[i]*b[i]-4*a[i]*c[i])==0){
printf("x1=x2=%.5lf\n",-b[i]/(2*a[i]));
}
if((b[i]*b[i]-4*a[i]*c[i])<0){
d=sqrt(4*a[i]*c[i]-b[i]*b[i])/(2*a[i]);
printf("x1=%.5lf+%.5lf%c;x2=%.5lf-%.5lfi\n",-b[i]/(2*a[i]),d,m,-b[i]/(2*a[i]),d,m);
}
}
return 0;
}
|
27
|
13377
|
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
|
13378
|
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
|
13379
|
int main(){
int n,m;
float a,b,c;
double z,x,y,d,e,f;
scanf("%d",&n);
for(m=0;m<n;m++){
scanf("%f %f %f",&a,&b,&c);
z=b*b-4*a*c;
if(z>0) {
x=(-b+sqrt(z))/(2*a);
if(x<0.0001&&x>-0.0001) x=0.00000;
y=(-b-sqrt(z))/(2*a);
printf("x1=%.5f;x2=%.5f\n",x,y);};
if(z==0) {
f=(-b)/(2*a);
printf("x1=x2=%.5f\n",f);};
if(z<0) {
d=sqrt(-z)/(2*a);
if(b==0) e=0;
if(b!=0) e=(-b)/(2*a);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",e,d,e,d);};
}
}
|
27
|
13380
|
int main(int argc, char* argv[])
{
int i,n;
double a[100],b[100],c[100];
double k;
scanf("%d",&n);
double x1,x2;
double f;
for(i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a[i],&b[i],&c[i]);
}
for(i=0;i<n;i++)
{
f=-(b[i]/2/a[i]);
double j=sqrt(b[i]*b[i]-4*a[i]*c[i])/(2*a[i]);
if(b[i]!=0)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1=f+j;
x2=f-j;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
k=sqrt(-b[i]*b[i]+4*a[i]*c[i])/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",f,k,f,k);
}
if(b[i]*b[i]-4*a[i]*c[i]==0)
{
x1=f;
x2=f;
printf("x1=x2=%.5lf\n",f,f);
}
}
if(b[i]==0)
{
if(b[i]*b[i]-4*a[i]*c[i]>0)
{
x1=j;
x2=-j;
printf("x1=0.00000+%.5lf;x2=0.00000+%.5lf\n",x1,x2);
}
if(b[i]*b[i]-4*a[i]*c[i]<0)
{
k=sqrt(4*a[i]*c[i])/(2*a[i]);
printf("x1=0.00000+%.5lfi;x2=0.00000-%.5lfi\n",k,k);
}
if(-4*a[i]*c[i]==0)
{
x1=f;
x2=f;
printf("x1=x2=0.00000\n");
}
}
}
return 0;
}
|
27
|
13381
|
int main()
{
int n;
scanf("%d", &n);
double a[100],b[100],c[100];
int i;
double delta[100];
double x1,x2;
double x11,x12,x21,x22;
double mo[100];
double e[100];
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf", &a[i], &b[i], &c[i]);
delta[i]= b[i]*b[i]-4*a[i]*c[i];
e[i]=(b[i]==0) ?0 : (-b[i])/(2 * a[i]);
}
for(i=1;i<=n;i++)
{
if(delta[i]>0)
{
x1=e[i]+sqrt(delta[i])/(2*a[i]);
x2=e[i]-sqrt(delta[i])/(2*a[i]);
printf("x1=%.5lf;x2=%.5lf\n", x1,x2);
continue;
}
else if(delta[i]<0)
{
mo[i]=sqrt(-delta[i]);
x11=e[i];
x12=mo[i]/(2*a[i]);
x21=x11;
x22=mo[i]/(2*a[i]);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n", x11,x12,x21,x22);
continue;
}
else if(delta[i]<pow(10,-8))
{
x1=e[i];
printf("x1=x2=%.5lf\n", x1);
}
}
return 0;
}
|
27
|
13382
|
int main()
{
int n; //????n????????
double a, b, c, x1, x2, shi, xu; //?????a,b,c???,x1,x2?????,shi,xu?????
cin >> n; //????????
for ( int p = 1; p <= n; p++ ) //????
{
cin >> a >> b >> c;
if ( b * b - 4 * a * c < 0 ) //????????????0?
{
shi = -b / (2 * a);
xu = sqrt(4 * a * c - b * b) / ( 2 * a ); //???
if (shi == 0)
{
shi = -shi;
}
printf ("x1=""%.5f",shi);
printf ("+""%.5f",xu);
printf ("i;x2=""%.5f",shi);
printf ("-""%.5f",xu);
printf ("i");
printf ("\n");
}
else if ( b * b - 4 * a * c == 0 ) //????????????0?
{
x1 = ( -b + sqrt(b * b - 4 * a * c)) / (2 * a); //???
printf ( "x1=x2=""%.5f",x1);
printf ("\n");
}
else //????????????0?
{
x1 = ( -b + sqrt(b * b - 4 * a * c)) / (2 * a);
x2 = ( -b - sqrt(b * b - 4 * a * c)) / (2 * a); //???
printf ("x1=""%.5f",x1);
printf (";x2=""%.5f",x2);
printf ("\n");
}
}
return 0;
}
|
27
|
13383
|
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
|
13384
|
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c,d,e;
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 printf("x1=x2=%.5lf\n",e);
}
return 0;
}
|
27
|
13385
|
int main()
{
int n,i=0;
scanf("%d",&n);
for(i=0;i<n;i++)
{ float a,b,c,d;
double disc,x1,x2,realpart,imagpart;
scanf ("%f%f%f",&a,&b,&c);
disc=b*b-4*a*c;
if(fabs(disc)==0)
printf("x1=x2=%.5f\n",-b/(2*a));
else if (disc>0)
{x1=(-b+sqrt(disc))/(2*a);
x2=(-b-sqrt(disc))/(2*a);
printf ("x1=%.5f;x2=%.5f\n",x1,x2);
}
else
{realpart=-b/(2*a);
imagpart=sqrt(-disc)/(2*a);
printf("x1=%.5f+%.5fi;",realpart,imagpart);
printf("x2=%.5f-%.5fi\n",realpart,imagpart);
}
}
return 0;
}
|
27
|
13386
|
int main()
{
double a, b, c, delta, x1, x2;
int n;
scanf("%d", &n );
while( n-- ) {
scanf("%lf %lf %lf", &a, &b, &c );
delta = b * b - 4 * a * c;
if( delta < 0 ) {
delta = sqrt(-delta) / 2 / a;
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\n", -b/2/a, delta, -b/2/a, -delta );
} else if( delta > 0 ){
delta = sqrt(delta)/2/a;
printf("x1=%.5lf;x2=%.5lf\n", -b/2/a+delta, -b/2/a-delta );
} else {
printf("x1=x2=%.5lf\n", -b/a/2 );
}
}
}
|
27
|
13387
|
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
|
13388
|
int main()
{int n=0;
double a=0,b=0,c=0,d=0;
cin>>n;
for(int i=1;i<=n;i++)
{cin>>a>>b>>c;
d=b*b-4*a*c;
if(b-0==0)
{if(d-0>0)
{cout<< fixed << setprecision(5) << "x1=0.00000+"<<sqrt(d)/(2*a)<<";"<<"x2=0.00000"<<-sqrt(d)/(2*a)<<endl;
}
if(d-0==0)
{cout<<fixed << setprecision(5) << "x1=x2="<<-b/(2*a)<<endl;
}
if(d-0<0)
{cout<<fixed << setprecision(5) << "x1=0.00000+"<<sqrt(-d)/(2*a)<<"i"<<";"<<"x2=0.00000-"<<sqrt(-d)/(2*a)<<"i"<<endl;
}
}
else{
if(d-0>0)
{cout<< fixed << setprecision(5) << "x1="<<-b/(2*a)+sqrt(d)/(2*a)<<";"<<"x2="<<-b/(2*a)-sqrt(d)/(2*a)<<endl;
}
if(d-0==0)
{cout<<fixed << setprecision(5) << "x1=x2="<<-b/(2*a)<<endl;
}
if(d-0<0)
{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
|
13389
|
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
|
13390
|
void main()
{
int n,i;
double p,q,t,x1,x2,a,b,c;
scanf("%d",&n);
for (i=0;i<n;i++)
{
scanf("%lf %lf %lf",&a,&b,&c);
p=-b/(2*a);
t=b*b-4*a*c;
if (t>0)
{
q=sqrt(b*b-4*a*c)/(2*a);
x1=p+q;
x2=p-q;
printf("x1=%.5lf;x2=%.5lf\n",x1,x2);
}
else if (t==0)
{
printf("x1=x2=%.5lf\n",p);
}
else if (t<0)
{
q=sqrt(-b*b+4*a*c)/(2*a);
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",p,q,p,q);
}
}
}
|
27
|
13391
|
int main()
{
int n,i;
double a,b,c,k,s,l;
cin>>n;
cout<<fixed;
cout.precision(5);
for(i=1;i<=n;i++)
{
cin>>a>>b>>c;
if(b*b-4*a*c>=0)
{
k=sqrt(b*b-4*a*c);
if(k==0)
{
if(b==0)
s=0;
else
s=-b/(2*a);
cout<<"\nx1=x2="<<s;
}
else
{
s=(-b+k)/(2*a);
l=(-b-k)/(2*a);
cout<<"\nx1="<<s<<";x2="<<l;
}
}
else
{
k=sqrt(4*a*c-b*b);
if(b==0)
s=0;
else
s=-b/(2*a);
l=k/(2*a);
cout<<"\nx1="<<s<<"+"<<l<<"i;x2="<<s<<"-"<<l<<"i";
}
}
return 0;
}
|
27
|
13392
|
int main()
{
int n,i;
double x1[100],x2[100],num1[100],num2[100],num3[100];
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]);
for(i=0;i<n;i++)
{
num1[i]=b[i]*b[i]-4*a[i]*c[i];
if (num1[i]>1e-6)
{
x1[i]=(-b[i]+sqrt(num1[i]))/(2*a[i]);
x2[i]=(-b[i]-sqrt(num1[i]))/(2*a[i]);
printf("x1=%.5f;x2=%.5f\n",x1[i],x2[i]);
}
else if (num1[i]<=1e-6&&num1[i]>=-1e-6)
{
x1[i]=-b[i]/(2*a[i]);
printf("x1=x2=%.5f\n",x1[i]);
}
else
{
num2[i]=-b[i]/(2*a[i]);
num3[i]=sqrt(-num1[i])/(2*a[i]);
printf("x1=%.5f+%.5fi;x2=%.5f-%.5fi\n",num2[i],num3[i],num2[i],num3[i]);
}
}
return 0;
}
|
27
|
13393
|
void main()
{
int n;
scanf("%d",&n);
double a[1000],b[1000],c[1000];
int q;
double x1,x2;
for(q=0;q<n;q++)
{
scanf("%lf%lf%lf",&a[q],&b[q],&c[q]);
}
for(q=0;q<n;q++)
{
double d = b[q]*b[q]-4*a[q]*c[q];
if(d>0)
{
x1=(-b[q] + sqrt(d))/(2*a[q]) ;
x2=(-b[q] - sqrt(d))/(2*a[q]);
printf("x1=%.5f;x2=%.5f\n",x1,x2);
}
else if(d==0)
{
x1=(-b[q] )/(2*a[q]) ;x2=(-b[q] )/(2*a[q]) ;
printf("x1=x2=%.5f\n",x1);
}
else
{
printf("x1=%.5f+%.5fi;x2=%.5f%.5fi\n",-b[q]/(2*a[q]),sqrt(-d)/(2*a[q]),-b[q]/(2*a[q]),- sqrt(-d)/(2*a[q]));
}
}
}
|
27
|
13394
|
main()
{
int n,i;
double a[999],b[999],c[999],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;
for(i=1;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
|
13395
|
/*????
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?
????
???????????n?
??n?????????a, b, c??????????????????ax2 + bx + c =0???
????
????n????????????
???????????x1=...;x2 = ...
????????????x1=x2=...
???????????x1=??+??i; x2=??-??i
???????????????5?????????????*/
int main()
{
double q,p;
int n,i;
cin>>n;
double a[n],b[n],c[n];
for( i=1;i<=n;i++)
cin>>a[i]>>b[i]>>c[i];
for(i=1;i<=n;i++)
{
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) p=0;
if(q==-0) q=0;
cout<<"x1="<<fixed<<setprecision(5)<<p+q<<";";
cout<<"x2="<<fixed<<setprecision(5)<<p-q<<endl;
}
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) p=0;
if(q==-0) q=0;
cout<<"x1="<<fixed<<setprecision(5)<<p<<"+"<<q<<"i"<<";";
cout<<"x2="<<fixed<<setprecision(5)<<p<<"-"<<q<<"i"<<endl;
}
if(b[i]*b[i]-4*a[i]*c[i]==0)
{
p=-b[i]/(2*a[i]);
if(p==-0) p=0;
cout<<"x1=x2="<<fixed<<setprecision(5)<<p<<endl;;
}
}
return 0;
}
|
27
|
13396
|
int main()
{
int n,i;
scanf("%d",&n);
double a,b,c;
double x1,x2;
for(i=1;i<=n;i++)
{
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b-4*a*c>0.0)
{
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<0.0)
{
if(b!=0)
{
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
if(sqrt(4*a*c-b*b)/(2*a)>0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",x1,x2,x1,x2);
}
if(sqrt(4*a*c-b*b)/(2*a)<0)
{
printf("x1=%.5lf%.5lfi;x2=%.5lf+%.5lfi\n",x1,x2,x1,-x2);
}
}
else if(b==0)
{
x1=-b/(2*a);
x2=sqrt(4*a*c-b*b)/(2*a);
if(sqrt(4*a*c-b*b)/(2*a)>0)
{
printf("x1=%.5lf+%.5lfi;x2=%.5lf-%.5lfi\n",-x1,x2,-x1,x2);
}
if(sqrt(4*a*c-b*b)/(2*a)<0)
{
printf("x1=%.5lf%.5lfi;x2=%.5lf+%.5lfi\n",-x1,x2,-x1,-x2);
}
}
}
else
{
x1=x2=-b/(2*a);
printf("x1=x2=%.5lf\n",x1);
}
}
return 0;
}
|
27
|
13397
|
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
|
13398
|
int main()
{
int n,i;
scanf("%d",&n);
for(i=0;i<n;i++)
{
double a,b,c;
scanf("%lf%lf%lf",&a,&b,&c);
if(b*b>4*a*c)
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)
printf("x1=x2=%.5lf\n",(-b+sqrt(b*b-4*a*c))/(2*a));
else
{
if(b==0)
printf("x1=0.00000+%.5lfi;x2=0.00000%.5lfi\n",sqrt(-b*b+4*a*c)/(2*a),-sqrt(-b*b+4*a*c)/(2*a));
else
printf("x1=%.5lf+%.5lfi;x2=%.5lf%.5lfi\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
|
13399
|
int main()
{
int n;
cin >> n;
float formal[n][3];
for (int i = 0; i < n; i++)
cin >> formal[i][0] >> formal[i][1] >> formal[i][2];
double x1,x2,delta,unfi;
for (int i = 0; i < n; i++)
{
delta = formal[i][1] * formal[i][1] - (4 * formal[i][0] * formal[i][2]);
if (delta > 0)
{
x1 = (-formal[i][1] + sqrt(delta)) / (2 * formal[i][0]);
x2 = (-formal[i][1] - sqrt(delta)) / (2 * formal[i][0]);
if (x1 == -0)
x1 = 0;
else if (x2== -0)
x2 = 0;
cout<<fixed;
cout << "x1=" << setprecision(5) << x1 << ";x2=" << x2 << endl;
}
else if (delta == 0)
{
x1 = -formal[i][1] / (2 * formal[i][0]);
if (x1 == -0)
x1 = 0;
cout<<fixed;
cout << "x1=x2=" << setprecision(5) << x1<<endl;
}
else
{
unfi = abs(sqrt(-delta) / (2 * formal[i][0]));
x1 = -formal[i][1] / (2 * formal[i][0]);
if (x1 == -0)
x1 = 0;
cout << fixed;
cout << setprecision(5) << "x1=" << x1 << "+" << unfi << "i;x2="
<< x1 << "-" << unfi << "i" <<endl;
}
}
return 0;
}
|
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