#include <iostream>

using namespace std;

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

    bool ans = false;
    for (int x = 1; x < b + c; x++) {
        for (int y = 1; y < b + c; y++) {
            if (b + c > a + x + y && a + x + y + min(b, c) > max(b, c)) {
                if (b * b * y * (a + y) == c * c * x * (a + x)) {
                    ans = true;
                }
            }
        }
    }

    cout << (ans ? "Yes" : "No") << endl;

    return 0;
}