Problem:
Counting Characters

Write a program which counts and reports the number of each alphabetical letter. Ignore the case of characters.

Input

A sentence in English is given in several lines.

Output

Prints the number of alphabetical letters in the following format:

a : The number of 'a'
b : The number of 'b'
c : The number of 'c'
.
.
z : The number of 'z'

Constraints

The number of characters in the sentence < 1200

Sample Input

This is a pen.

Sample Output

a : 1
b : 0
c : 0
d : 0
e : 1
f : 0
g : 0
h : 1
i : 2
j : 0
k : 0
l : 0
m : 0
n : 1
o : 0
p : 1
q : 0
r : 0
s : 2
t : 1
u : 0
v : 0
w : 0
x : 0
y : 0
z : 0

Solution in C# (judge verdict: Wrong Answer)

using System;

namespace ConsoleApplication23
{
    class Program
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            Char[] moji = input.ToCharArray();
            string[] alpha = { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "m", "l", "o", "p", "q", "l", "s", "t", "u", "v", "w", "x", "y", "z" };
            int[] Sum = new int[alpha.Length];
            for (int i = 0; i < moji.Length; i++)
            {
                string an = moji[i].ToString();
                for (int I = 0; I < alpha.Length; I++)
                {
                    if (String.Compare(an,alpha[I],true) == 0)
                    {
                        Sum[I] = Sum[I] + 1;
                    }
                }
            }
            for (int I = 0; I < alpha.Length; I++)
            {
                Console.WriteLine(alpha[I] + " : " + Sum[I]);
            }
        }
    }
}