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

int main() {
  int N, M, K; cin >> N >> M >> K;
  bool ans = false;
  for (int i = 0; i <= N; i++) {
    for (int j = 0; j <= M; j++) {
      if ((N - i) * j + (M - j) * i == K) ans = true;
    }
  }
  cout << ( (ans) ? "Yes" : "No" ) << endl;
}
