Resource limitation

Time limitation: 1.0s Memory limitation: 256.0MB

Problem description

Write a program to solve the real roots of a quadratic equation in one unknown , and the coefficients of the equation are

entered by the user in the xh input format.

One row and three integers are three of the one-dimensional quadratic equation. Two coefficients, separated by spaces between the data.

Output format

output a real number root of the equation (if the two are different, the first two are separated by spaces. If the two are the same, the output will be NO if there is no root)

Sample input

1 -5 4

Sample output

4 1

Sample input

1 -2 1

Sample output

1

Sample input

1 0 1

Sample output

NO

```
#include<iostream>
#include<cmath>
using namespace std;
int main()
{
int a ,b ,c ;
double d , x1 ,x2 ;
scanf("%d%d%d",&a,&b,&c);
if(b*b-4*a*c<0){
printf("NO\n");
} else if(b*b-4*a*c==0){
x1 = 1.0*(-b)/(2*a);
printf("%.0f\n",x1);
}else{
d = sqrt(b*b-4*a*c);
x1 = (-b+d)/(2*a);
x2 = (-b-d)/(2*a);
if(x1<x2){
int temp = x1;
x1 = x2;
x2 = temp;
}
printf("%g %g\n",x1,x2);
}
return 0;
}
```