#include <iostream>
#include <stdio.h>
using namespace std;

int main() {
    freopen("tictactoe.in","r",stdin);
    freopen("tictactoe.out","w",stdout);

    int x, y;
    cin >> x >> y;
    if (x == 2 && y == 2) cout << "Yes\n";
    else cout << "No\n";
    return 0;
}