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

int main()
{
  ios::sync_with_stdio(0);
  cin.tie(0);
  
  ll n,m;
  cin >> n >> m;
  if((n%2==0) && (m%2==0)){
    cout << "Yes" << endl;
    return 0;
  }
  if(100* n==10 *m){
    cout << "Yes" << endl;
    return 0;
  }
  cout << "No" << endl;
  return 0;
}