#include <bits/stdc++.h>
using namespace std;
int main(){
    int a,b,c;
    cin>>c>>b>>a;
    if(a>=165&&a<=185&&b>=50&&b<=80&&c>=16&&c<=19){
        cout<<"Y";
    }else{
    	cout<<"N";
    } 
}
/**************************************************************
	Problem: 1661
	User: sucongyi
	Language: C++
	Result: Accepted
	Time:32 ms
	Memory:2072 kb
****************************************************************/