#include<bits/stdc++.h>
using namespace std;

int main()
{
    double a,b,c,x1,x2,a_,b_,c_;
    cin >> a >> b >> c;
    a_ = a * -1;
    b_ = b * -1;
    c_ = c * -1;
    x1 = (b_ + sqrt(b * b - 4 * a * c)) / (2.0 * a) * 1.0;
    x2 = (b_ - sqrt(b * b - 4 * a * c)) / (2.0 * a) * 1.0;
    if(x1 == x2)printf("x1=x2=%.5lf",x1);
    else if(x1 < x2)printf("x1=%.5lf;x2=%.5lf",x1,x2);
    else printf("x1=%.5lf;x2=%.5lf",x2,x1);
    return 0;
}