#include<bits/stdc++.h>
using namespace std;
int main(){
	int a;
	cin>>a;
	if(1<a){
		if(100>a){
			cout<<"yes";
		}
	}

	return 0;
}
;
/**************************************************************
	Problem: 1641
	User: lvrenxiang
	Language: C++
	Result: Accepted
	Time:7 ms
	Memory:2072 kb
****************************************************************/