Problem:
Reverse Sequence

Write a program which reverses a given string str.

Input

str (the size of str ≤ 20) is given in a line.

Output

Print the reversed str in a line.

Sample Input

w32nimda

Output for the Sample Input

admin23w

Solution in C (judge verdict: Time Limit Exceeded)

#include <stdio.h>

int main(void)
{
  char str[20];
  int i;
  scanf("%s", str);
  i = 0;
  while(str[i] != '\0'){
  i++;
  }
  while(i != -1){
  printf("%c", str[i-1]);
  i--;
  }
  printf("\n");
  return (0);
}