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

int main(){
  ios::sync_with_stdio(false);
  cin.tie(0);
  int n, h, w; cin >> n >> h >> w;
  if(h == 1 && w == 1){
    cout << "No" << '\n';
    return 0;
  }
  if(h == 1 || w == 1 || h == w){
    cout << "Yes" << '\n';
    return 0;
  }
  cout << "No" << '\n';
  return 0;
}