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: Wrong Answer)

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int[] sum = new int[26];

		while(sc.hasNext()) {
			String line = sc.next();

			char[] chars =  line.toCharArray();
			for(int i = 0;i < chars.length; i++) {
				for(int j = 0;j < 26; j++) {
					if(chars[i] == 'a' + j || chars[i] == 'A' + j) {
						sum[j]++;
					}
				}
			}

		}
		System.out.println("e");

		for(int i = 0;i < sum.length;i++) {
			int ab = 'a' + i;

			System.out.println((char)ab + " : " + sum[i]);
		}
		sc.close();

	}
}