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

/**************************************************************
	Problem: 1661
	User: toughuatao1
	Language: C++
	Result: Accepted
	Time:20 ms
	Memory:2072 kb
****************************************************************/