#include "inOutStr.h"
int main() {
 int i, j ;
 char c ;

 inString() ;
 for(i=0, j = 38; i<j; ++i, --j) {
   c = data[i] ; data[i] = data[j]; 
   data[j] = c;
 }
 outString(); printf("\n") ;
}