#include<string.h>

void miroir(char x[])
{
  char prov[22] ;

  int l = strlen(x) ;
  if (l == 1) printf("%c\n", x[0]) ;
  else {
    printf("%c", x[l-1]) ;
    strcpy(prov,x) ; prov[l-1] = '\0' ;
    miroir(prov) ;
  }
}


main(int argc, char * argv[])
{
  if (argc == 2) miroir(argv[1]) ;
}