#include <iostream>
#include <cmath>
#include <string>
#include <algorithm>

using namespace std;


int main()
{
    long long a, b, c, d;
    cin >> a >> b >> c >> d;


    for (int x = -100; x <= 100; ++x) {
        int x2 = x*x, x3 = x2*x;
        if (a*x3 + b*x2 + c*x + d == 0) cout << x << " ";
    }

    return 0;
}