#include<bits/stdc++.h>
using namespace std;
using u64 = uint_least64_t;
using s64 = int_least64_t;
using ll = uint_least64_t;

int main(){
	u64 n ;
	cin >> n;

    u64 a = n % 2;
    if (a == 0){
        cout << "YES" << endl;
    }else{
        cout << "NO" << endl;
    }
	return 0;
}