#include <iostream>
using namespace std;

struct Book {
    char book[20];
    int pri;
};

int main() {
    Book b;
    cin >> b.book;
    cin >> b.pri;

    if (b.pri >= 10000) {
        cout << "비싼 책" <<endl;
    }else{
        cout << "저렴한 책" <<endl;
    }

    return 0;
}