#include <bits/stdc++.h>
using namespace std;
int main(){
	int n;
	cin >>n;
	if (n%10%2==0||n/10%10%2==0||n%1000/10/10%2==0||n/1000%2==0){
		cout <<"YES";
	}
	else{
		cout <<"NO";
	}
	return 0;
}