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

signed main() {
    int n, h, w;
    cin >> n >> h >> w;

    if ((h == 1 || w == 1 || h == w) && !(h == 1 && w == 1)) {
        cout << "Yes" << endl;
    } else {
        cout << "No" << endl;
    }
}