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;
using System.Collections.Generic;


class A
{
	public static void Main ()
	{

		int[] output = new int[26];
		string s = Console.ReadLine ().ToUpper();

		for (int i=0; i<s.Length; i++) {
			if (s [i] >= 'A' && s [i] <= 'Z') {
				output [(int)s [i] - 65]++;
			}
		}

		for (int i =0; i<output.Length; i++) {
			Console.WriteLine ( "{0} : {1}",Convert.ToChar (i + 97) , output [i]);
		}

	}
}