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

int main()
{
	long long int n,m;
	cin>>n>>m;
	if(n%2==0 && m%2==0)cout<<"YES"<<endl;
	else if(n%2==0 && (m-10)>=0 && !(m-10)%2==0)cout<<"YES"<<endl;
	else cout<<"NO"<<endl;
	return 0;
}