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 OCaml (4.02.3) (judge verdict: Accepted)

open Printf
open Scanf

let () =
  scanf "%c" (fun c -> Char.chr @@ (fun x -> x + 1) @@ Char.code c) |> printf "%c\n"