#include <stdio.h>
#include <math.h>
int main ()
{
   int a,b,c,D;
   float root1,root2;
   printf("the coefficients (a,b,c)\n");
    scanf("%d",&a);
    scanf("%d",&b);
    scanf("%d",&c);
    D=b*b-4*a*c;
    if(D>0)
    {
        printf("the roots are real\n");
        root1=(-b+(sqrt(D)))/2*a;
        root2=(-b-(sqrt(D)))/2*a;
        printf("the value of the first root is %f\n",root1);
        printf("the value of the second root is %f\n",root2);
    }
    else if(D==0)
    {
        printf("the roots are equal\n");
        root1=(-b/2*a);
        root2=(-b/2*a);
        printf("the value of the first root is %f\n",root1);
        printf("the value of the second root is %f\n",root2);
    }
    else
    {
        printf("the roots are imaginary\n");
    }
    return 0;
}