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;
            }
        }
    }
}