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

int main(){
int n,m;
cin >> n >>m;
if(n%2==0&&m%2==0){
    cout <<"Yes"<<endl;
}
else if(n*10==m ){
    cout <<"Yes"<<endl;
}
else{
    cout <<"No"<<endl;
}
}