#include <bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	if(a%4==0&&a%100!=0)||(a%400==0))cout<<"yes";
	else cout<<"no";
	return 0;
}
/**************************************************************
	Problem: 1646
	User: panyuchen
	Language: C++
	Result: Compile Error
****************************************************************/