#include <iostream>

int main() {
    // Read input
    int a, p, q;
    std::cin >> a >> p >> q;

    // Calculate coefficients for the second-degree polynomial ax^2 + bx + c
    int b = -(p + q);
    int c = p * q;

    // Check if b^2 > 4ac
    if (b * b > 4 * a * c) {
        std::cout << "Yes" << std::endl;
    } else {
        std::cout << "No" << std::endl;
    }

    return 0;
}