// Problem 3.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <string>

using namespace std;

bool check(string a)
{
	for (int i = 0; i <= a.length(); i++)
	{
		if (a[i] % 2 = 0)
		{
			return true;
		}
		else
		{
			return false;
		}
	}

}

int main()
{
	cout << "Enter a number:" << endl;
	string a;
	while (cin >> a)
	{
		if (a = 0 || a < 0)
		{
			cout << "N/A" << endl;
		}
		else if (check(a))
		{
			cout << "YES" << endl;
		}
		else
		{
			cout << "NO" << endl;
		}
	}

	return 0;
}