Problem:
Score : 100 points

Problem Statement

Given is a lowercase English letter C that is not z. Print the letter that follows C in alphabetical order.

Constraints

C is a lowercase English letter that is not z.

Input

Input is given from Standard Input in the following format:

C

Output

Print the letter that follows C in alphabetical order.

Sample Input 1

a

Sample Output 1

b

a is followed by b.

Sample Input 2

y

Sample Output 2

z

y is followed by z.

Solution in Python (3.4.3) (judge verdict: Accepted)

c = input()
A = ["a", "b", "c", "d", "e", "f", "g" ,"h", "i",
     "j", "k", "l", "m", "n", "o", "p", "q", "r",
     "s", "t", "u", "v", "w", "x", "y", "z"]
for i in range(len(A)):
    if A[i] == c:
        print(A[i + 1])
        break