开荒

#include<iostream>
using namespace std;
void amagi(int a){
    if(a%4==0){
        if(a%100==0){
            if(a%400==0)
                cout << "YES";
            else
                cout << "NO";
        }
        else
            cout << "YES";
        
    }
    else
        cout << "NO";
}
int main(){
    int a;
    cin >>a;
    amagi(a);
}