#include <bits/stdc++.h>
using namespace std;
using ll=long long;
const int INF=1e9;
int a[10][10];

 /* Library:
  https://yukicoder.me/users/24530/ai_code */

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