#include <iostream>
using namespace std;

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

    // 判断是否符合三个标准（均包含边界值）
    if (age >= 16 && age <= 19 &&
        weight >= 50 && weight <= 80 &&
        height >= 165 && height <= 185) {
        cout << "Y" << endl;
    } else {
        cout << "N" << endl;
    }

    return 0;
}