#include <bits/stdc++.h>
#define EPS 1e-9
using namespace std;

int a, b, c;

double gao(int t, int b, int c, int i) {
    double cosC = (t * t + b * b - c * c) / (2.0 * t * b);
    double C = sqrt(b * b + i * i - 2 * b * i * cosC);
    return (b * b + C * C - i * i) / (2.0 * b * C);
}

bool check(int t) {
    for (int i = 1, j = t - a - 1; j > 0; i++, j--)
        if (fabs(gao(t, b, c, i) - gao(t, c, b, j)) < EPS) return true;
    return false;
}

int main() {
    scanf("%d%d%d", &a, &b, &c);
    for (int i = a + 2; i < b + c; i++) if (check(i)) { printf("Yes\n"); return 0; }
    printf("No\n"); return 0;
}