#include <iostream>
using namespace std;

int main() {
    int age, weight, height;
    cin >> age >> weight >> height;

    bool isQualified = (age >= 16 && age <= 19) 
                      && (weight >= 50 && weight <= 80) 
                      && (height >= 165 && height <= 185);

    if (isQualified) {
        cout << "Y" << endl;
    } else {
        cout << "N" << endl;
    }

    return 0;
}
/**************************************************************
	Problem: 1661
	User: fuhoubin
	Language: C++
	Result: Accepted
	Time:34 ms
	Memory:2072 kb
****************************************************************/