文件目录

// C=5×(F−32)÷9
#include <bits/stdc++.h>
using namespace std;

int main()
{
    double a, b, c;
    cin >> a >> b >> c;
    if (b * b - 4 * a * c < 0)
    {
        cout << "No answer!";
        return 0;
    }
    double x1 = (sqrt(b * b - 4 * a * c) - b) / (2 * a), x2 = (0 - b - sqrt(b * b - 4 * a * c)) / (2 * a);
    if (x1 > x2)
    {
        printf("x1=%.5lf;x2=%.5lf", x2, x1);
    }
    else if (x1 == x2)
    {
        printf("x1=x2=%.5lf", x1);
    }
    else if (x1 < x2)
    {
        printf("x1=%.5lf;x2=%.5lf", x1, x2);
    }
    return 0;
}