#include <bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
if(n%2==0){
cout<<"yes"<<endl;	
	
}



return 0;

}

/**************************************************************
	Problem: 1640
	User: mc002
	Language: C++
	Result: Accepted
	Time:4 ms
	Memory:2072 kb
****************************************************************/