#include <bits/stdc++.h>
using namespace std;

int main() {
    int N, M, C;
    cin >> N >> M >> C;

    if (N >= 2 && M >= 2) {
        cout << (N * M % 2 ? "NO" : "YES") << endl;
    } else {
        cout << (C == N || C == M ? "YES" : "NO") << endl;
    }
}