#include <iostream>
#include <iomanip>

using namespace std;

typedef struct node {
    string id;
    string name;
    double price;
    struct node *next;
} node, book_list*;

void init_list(book_list *books) {
    *books = new node();
    (*books)->next = NULL;
}

void create_from_end(book_list *books) {
    node *r = reinterpret_cast<node *>(books);
    node *s = new node();
    do {
        cin >> s->id >> s->name >> s->price;
        if (s->id == "0" && s->name == "0" && s->price == 0) {
            r->next = s;
        } else {
            r->next = NULL;
        }
    } while (r->next != NULL);
}


int main() {
    return 0;
}