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