```cpp
#include <bits/stdc++.h>
using namespace std;
double a,b,c,x1,x2,delta;
int main()
{
cin>>a>>b>>c;
delta = b*b-4*a*c;
if (delta < 0){
printf("No answer!");
return 0;
}
x1=(-b+sqrt(delta))/(2.0*a);
x2=(-b-sqrt(delta))/(2.0*a);
if (x1 > x2) swap(x1, x2);
if (delta == 0) printf("x1=x2=%.5lf", x1);
else printf("x1=%.5lf;x2=%.5lf", x1, x2);
return 0;
}
```
by Zoe_888 @ 2024-04-26 10:02:52