#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(16<=a<=19&&50<=b<=80&&165<=c<=185){
		cout<<"Y";
	}else{
		cout<<"N";
	}
	
} 
/**************************************************************
	Problem: 1661
	User: linzihang
	Language: C++
	Result: Wrong Answer
****************************************************************/