Problem:
Score : 100 points

Problem Statement

You are given a string S of length 2 or 3 consisting of lowercase English letters. If the length of the string is 2, print it as is; if the length is 3, print the string after reversing it.

Constraints

The length of S is 2 or 3.

S consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

S

Output

If the length of S is 2, print S as is; if the length is 3, print S after reversing it.

Sample Input 1

abc

Sample Output 1

cba

As the length of S is 3, we print it after reversing it.

Sample Input 2

ac

Sample Output 2

ac

As the length of S is 2, we print it as is.

Solution in C (GCC 5.4.1) (judge verdict: Runtime Error)

#include <stdio.h>
int main(){
  
    int i,j;
    char S[2];
  
    scanf("%s", S);
    
    for(i = 0; S[i] != '\0'; ++i)
      
    if(i = 2){
      for(j = 0; j < 2; ++j){
        printf("%s", S[j]);
      }
    }
    else if(i = 3){
      for(j = 2; j > 0; --j){
        printf("%s", S[j]);
      }
    }
  
    return 0;
}