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 JAVA (judge verdict: Accepted)

//import java.io.File;
import java.util.Scanner;

class Main{
	public static void main(String[] args) {
try{
		//Scanner scan = new Scanner(new File("in.txt"));
		Scanner scan = new Scanner(System.in);


		int[] alpha = new int['z'-'a'+1];

		while(scan.hasNext()) {
			char[] arr = scan.nextLine().toCharArray();
			for(int i = 0; i < arr.length; i++) {
				if(arr[i] >= 'a' && arr[i] <= 'z') {
					alpha[arr[i]-'a']++;
				}
				if(arr[i] >= 'A' && arr[i] <= 'Z') {
					alpha[arr[i]-'A']++;
				}
			}
		}

		for(int i = 0; i < alpha.length; i++) {
			char letter = 'a';
			letter += i;
			System.out.println(letter+" : "+alpha[i]);
		}
		

}catch(Exception e) {
	e.printStackTrace();
}
	}
}