#include <iostream>

using namespace std;

int main() {

    int hh, mm;

    cin >> hh >> mm;

    //換算成分鐘，比較容易判斷

    int minute = hh * 60 + mm;

    if (minute >= 450 && minute < 1020) {

        cout << "At School\n";

    } else {

        cout << "Off School\n";

    }

    return 0;

}