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

int main() {
	  int n;
	  cin >> n;
	  int h, w;
	  cin >> h >> w;
	  if (h == 1 || w == 1 || (h == w)) {
	  	  cout << "Yes" << endl;
	  } else {
	  	  cout << "No" << endl;
	  }
}