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

#define BUFFER_SIZE 512
#define EOLN '\n'

int readline(int first)
{
    char data[BUFFER_SIZE];
    if (fgets(data, BUFFER_SIZE, stdin)) {
	int eof = 0;
	char *end = data;
	while (*end != 0 && *end != EOLN)
	    end++;
	if (*end == 0) {
	    eof = readline(0);
	}

	for (end--; end >= data; end--)
	    fputc(*end, stdout);
	if (first)
	    fputc(EOLN, stdout);
	return eof;


    } else {
	return 1;
    }
}

int main()
{
    while (!readline(1));
    return EXIT_SUCCESS;
}