#include <stdio.h>
#include <string.h>
int main()
{
char arr[501];
while (1)
{
gets_s(arr);
if (arr[0] == 'E' && arr[1] == 'N' && arr[2] == 'D')
break;
int len = strlen(arr);
for (int i = len - 1; i >= 0; i--)
printf("%c", arr[i]);
printf("\n");
}
return 0;
}