#include <bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
	if(19>=a&&a>=16&&80>=b&&b>=50&&185>=c&&c>=165)cout<<"Y";
	else cout<<"N";
	return 0;
}
/**************************************************************
	Problem: 1661
	User: panyuchen
	Language: C++
	Result: Accepted
	Time:21 ms
	Memory:2072 kb
****************************************************************/