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 Python (3.4.3) (judge verdict: Runtime Error)

n = int(input())
a = [int(input()) for i in range(n)]
a.sort()

if n%2 != 0:
        m = int(n/2)
        x = 0
        y = 0
        z = max(a[2*m]-a[m], a[m]-a[0])
        for i in range(m):
                x += int(a[2*m-i] - a[i])
        for i in range(m-1):
                y += int(a[2*m-1-i] - a[i])
        print(x+y+z)
elif n%2 == 0:
        m = int(n/2)
        x = 0
        y = 0
        for i in range(m-1):
                x += int(a[2*m-1-i] - a[i])
        for i in range(m-2):
                y += int(a[2*m-2-i] - a[i])
        print(x+y+a[m]-a[m-2]+a[2*m-1]-a[m-1])