#include <stdio.h>
#include <stdlib.h>

int main() {
    int capacity = 5; // initial capacity
    int size = 0; // current number of elements
    int *arr = malloc(sizeof(int) * capacity);

    int num;
    while (scanf("%d", &num) == 1) { // read integers until end of input
        if (size == capacity) { // if array is full, double its capacity
            capacity *= 2;
            int *tmp = realloc(arr, sizeof(int) * capacity);
            if (tmp == NULL) {
                printf("Error: failed to reallocate memory\n");
                free(arr);
                return 1;
            }
            arr = tmp;
        }
        arr[size] = num;
        size++;
    }

    printf("The array is:\n");
    for (int i = 0; i < size; i++) {
        printf("%d ", arr[i]);
    }
    printf("\n");

    free(arr);
    return 0;
}