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

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

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