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dyn_arr.c
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#include <stdio.h>
#include <stdlib.h>
/*
* 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);
total_number_of_books = calloc(total_number_of_shelves, sizeof(int()));
int total_number_of_queries;
scanf("%d", &total_number_of_queries);
total_number_of_pages = malloc(total_number_of_shelves * sizeof(int *));
for(int i=0; i<total_number_of_shelves; i++)
{
total_number_of_pages[i] = calloc(1100, sizeof(int));
}
while (total_number_of_queries--) {
int type_of_query;
scanf("%d", &type_of_query);
if (type_of_query == 1) {
int x, y;
scanf("%d %d", &x, &y);
*(total_number_of_books + x)+=1;
int *book = total_number_of_pages[x];
while (*book != 0)
book++;
*book = y;
} 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;
}