#include <iostream>
#include <string>
#define print(x) cout << x << endl;
using namespace std;

int main(void){
    /*print("YES")だけでいい*/
    
    cin.tie(0);
    ios::sync_with_stdio(false);
    int N, M;
    
    cin >> N >> M;
    string ans = "YES";
    
    int k;
    k = N + M/10;
    
    if(k%2 == 1){
        ans = "NO";
    }
    print(ans);
}