#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n, m, c;
  cin >> n >> m >> c;

  if (min(n, m) == 1)
    cout << "NO" << endl;
  else if (m * n % 2 == 0)
    cout << "YES" << endl;
  else
    cout << "NO" << endl;
  
  return 0;
}