#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

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