#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,k,l;
	cin>>l>>k>>a;
	if(a>=165&&a<=185&&k<=80&&k>=50&&l>=16&&l<=19){
		cout<<"Y";
	}else{
		cout<<"N";
	}
}

/**************************************************************
	Problem: 1661
	User: tonghuawei
	Language: C++
	Result: Accepted
	Time:17 ms
	Memory:2072 kb
****************************************************************/