#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	if(100>a&&a>1&&a%1==0){cout<<"yse";
	}
	return 0;
}

/**************************************************************
	Problem: 1641
	User: panyuchen
	Language: C++
	Result: Wrong Answer
****************************************************************/