#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: panjinyan
	Language: C++
	Result: Accepted
	Time:11 ms
	Memory:2072 kb
****************************************************************/