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 C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;

namespace abc151A
{
    class MainClass
    {
        public static void Main(string[] args)
        {
            string A = Console.ReadLine();
            switch (A)
            {
                case "A":
                    Console.WriteLine("B");
                    break;
                case "B":
                    Console.WriteLine("C");
                    break;
                case "C":
                    Console.WriteLine("D");
                    break;
                case "E":
                    Console.WriteLine("F");
                    break;
                case "F":
                    Console.WriteLine("G");
                    break;
                case "G":
                    Console.WriteLine("H");
                    break;
                case "H":
                    Console.WriteLine("I");
                    break;
                case "I":
                    Console.WriteLine("J");
                    break;
                case "J":
                    Console.WriteLine("K");
                    break;
                case "K":
                    Console.WriteLine("L");
                    break;
                case "L":
                    Console.WriteLine("M");
                    break;
                case "M":
                    Console.WriteLine("N");
                    break;
                case "N":
                    Console.WriteLine("O");
                    break;
                case "O":
                    Console.WriteLine("P");
                    break;
                case "P":
                    Console.WriteLine("Q");
                    break;
                case "Q":
                    Console.WriteLine("R");
                    break;
                case "R":
                    Console.WriteLine("S");
                    break;
                case "S":
                    Console.WriteLine("T");
                    break;
                case "T":
                    Console.WriteLine("U");
                    break;
                case "U":
                    Console.WriteLine("X");
                    break;
                case "X":
                    Console.WriteLine("Y");
                    break;
                case "Y":
                    Console.WriteLine("Z");
                    break;
            }
        }
    }
}