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

#define BUFFER_SIZE 512

struct item {
    char data[BUFFER_SIZE];
    struct item *next;
};

void tac()
{
    int eol = 0;
    struct item *first = malloc(sizeof(struct item));
    struct item *last = first;
    first->next = NULL;

    while (1) {
	char *p;
	if (!fgets(last->data, BUFFER_SIZE, stdin)) {
	    last->data[0] = 0;
	    break;
	}

	for (p = last->data; *p; p++);

	eol = (p > last->data) && p[-1] == '\n';

	if (eol) {
	    break;
	} else {
	    struct item *next = malloc(sizeof(struct item));
	    next->next = NULL;
	    last->next = next;
	    last = next;
	}
    }

    if (eol)
	tac();

    while (first) {
	struct item *curr = first;
	first = first->next;
	fputs(curr->data, stdout);
	free(curr);
    }
}

int main()
{
    tac();
    return EXIT_SUCCESS;
}