#include<bits/stdc++.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;
}