#include<bits/stdc++.h>
using namespace std;
int main() {
    int a,b,c;
    cin>>a>>b>>c;
    if(a>=16&&a<=19&&b>=50&&b<=80&&c>=165&&c<=185) cout<<"Y";
    else cout<<"N";
}
/**************************************************************
	Problem: 1661
	User: wengsihan
	Language: C++
	Result: Accepted
	Time:20 ms
	Memory:2072 kb
****************************************************************/