p03227 Tenka1 Programmer Beginner Contest - Measure
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.

Examples

Input

abc


Output

cba


Input

ac


Output

ac
```python
S = input()
if len(S) == 2:
  print(S)
if len(S) == 3:
  print(S[2]+S[1]+S[0])
```