#include<bits/stdc++.h>
using namespace std;
int main(){
int m,n,v=0;
cin>>m;
if(m%2==0){
cout<<"y"<<" "<<"e"<<" "<<"s";
return 0;
}
cout<<"n"<<" "<<"o";
}
/**************************************************************
Problem: 1033
User: baizhoudeyueguang
Language: C++
Result: Accepted
Time:9 ms
Memory:2072 kb
****************************************************************/