P1.15 P61634 Leap years

#include <iostream>
using namespace std;


int main() {
    int x;
    cin >> x;
    if ((x%100)==0) {
        x=(x/100);
        if ((x%4)==0) {cout << "YES" << endl;}
        else {cout << "NO" << endl;}
    }
    else if ((x%4)==0) {
        cout << "YES" << endl;
    }
    else {
        cout << "NO" << endl;
    }
}