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
# vim: set fileencoding=utf-8:


def main():
    S = raw_input()
    if len(S) == 2:
        print(S)
    else:
        print(S[::-1])


if __name__ == "__main__":
    main()
