114514

#include<bits/stdc++.h>
using namespace std;
int main() {
    int year;
    cin >> year;

    if (year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)) {
        cout << "yes" << endl;
    } else {
        cout << "no" << endl;
    }

    return 0;
}