include

include

/* * This stores the total number of books in each shelf. / int total_number_of_books;

/* * This stores the total number of pages in each book of each shelf. * The rows represent the shelves and the columns represent the books. / int* total_number_of_pages;

int main() { int total_number_of_shelves; scanf("%d", &total_number_of_shelves);

int total_number_of_queries;
scanf("%d", &total_number_of_queries);

int* total_number_of_books = (int*)calloc(total_number_of_shelves, sizeof(int));
int** total_number_of_pages = (int**)calloc(total_number_of_shelves, sizeof(int*));
while (total_number_of_queries--) {
    int type_of_query;
    scanf("%d", &type_of_query);

    if (type_of_query == 1) {
        /*
         * Process the query of first type here.
         */
        int x, y;
        scanf("%d %d", &x, &y);
        if (*(total_number_of_pages + x) == NULL) {
            *(total_number_of_pages + x) = (int*)calloc(1100, sizeof(int));
        }
        *(*(total_number_of_pages + x) + *(total_number_of_books + x)) = y;
        *(total_number_of_books + x) += 1;

    } else if (type_of_query == 2) {
        int x, y;
        scanf("%d %d", &x, &y);
        printf("%d\n", *(*(total_number_of_pages + x) + y));
    } else {
        int x;
        scanf("%d", &x);
        printf("%d\n", *(total_number_of_books + x));
    }
}

if (total_number_of_books) {
    free(total_number_of_books);
}

for (int i = 0; i < total_number_of_shelves; i++) {
    if (*(total_number_of_pages + i)) {
        free(*(total_number_of_pages + i));
    }
}

if (total_number_of_pages) {
    free(total_number_of_pages);
}

return 0;

}