#include <bits/stdc++.h>
using namespace std;


int main(){
	int a,h,w;
	cin>>a>>w>>h;
	if(a>=16&&a<=19&&w>=50&&w<=80&&h>=165&&h<=185){
		cout<<"Y";
	}else{
		cout<<"N";
	}
}
/**************************************************************
	Problem: 1661
	User: admin
	Language: C++
	Result: Accepted
	Time:38 ms
	Memory:2072 kb
****************************************************************/