#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
int main() {
	long long n;
	cin >> n;
	if (n % 2 == 0) {
		cout << "YES" << endl;
	}
	else {
		cout << "NO" << endl;
	}
}