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: Accepted)

using System;
using static System.Console;

namespace Main
{
    class Program
    {
        static void Main(string[] args)
        {
            char[] abc = "abcdefghijklmnopqrstuvwxyz".ToCharArray();
            char C = (char)Read();
            int i = Array.BinarySearch(abc, C);
            WriteLine(C =='z' ? 'a' : abc[i + 1]);
        }
    }
}