#include<bits/stdc++.h>
using namespace std;
int main(){
    double a,b,c;
    cin>>a>>b>>c;
    double x1,x2;
    x1=(double)0-b+pow(pow(b,2)-4*a*c,0.5);
    x1=(double)x1/2/a;
    
    x2=(double)0-b-pow(pow(b,2)-4*a*c,0.5);
    x2=(double)x2/2/a;
    if (x1==x2)printf("x1=x2=%.5lf",x1);return 0;
    printf("x1=%.5lf;",x1);
    printf("x2=%.5lf",x2);
    return 0;
}