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

int main() {
 int N,h,w;
 cin >> N >> h >> w;
 if(h==1||w==1||h+w==2||h-w==0){
   cout << "Yes\n";
 }else{
   cout << "No\n";
 }
  
  return 0;
}