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

#define pole 100

int main() {
  char p[pole + 1];
  char *konecpointeru ;
  scanf("%s", p);
  

  konecpointeru = p + strlen(p) - 1;
  printf("\n");

    
  while (konecpointeru >= p) {
    printf("%c", *konecpointeru);
    konecpointeru--;
  }

  printf("\n");

}