#include <stdio.h>
#include <string.h>

int main ()
{
    char s [11], t;
    int i, n;

    scanf ("%s", s);
    n = strlen (s);
    for (i = 1; i < n - 1 - i; i++)
    {
        t = s[i];
        s[i] = s[n - 1 - i];
        s[n - 1 - i] = t;
    }
    printf ("%s\n", s);

    return 0;
}