#include <bits/stdc++.h>
using namespace std;
int main(){
	int y,x,n;
	scanf("%d %d %d",&y,&x,&n);
	if (y>=16 && y<=19 && x>=50 && x<=80 && n>=165 && n<=185){
		cout<<"Y"<<endl;
	}
	else {
		cout<<"N"<<endl;
	}
} 
/**************************************************************
	Problem: 1661
	User: xiaojingxuan
	Language: C++
	Result: Accepted
	Time:22 ms
	Memory:2072 kb
****************************************************************/