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: WA: Presentation Error)

/* ITP1_8_C */
import java.io.*;

class Main
{
  static final int ALPHABET = 26;

  public static void main(String[] args)
  {
    int[] count = new int[ALPHABET];
    try{
      BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
      StringBuilder sb = new StringBuilder();
      String str = "";

      while((str = br.readLine()) != null){
        str = str.toLowerCase();

        for(char c : str.toCharArray()){
          if(Character.isLetter(c))
            count[c - 'a']++;
        }
      }

      for(int i = 0; i < count.length; i++){
        sb.append((char)('a' + i));
        sb.append(" : ").append(count[i]).append("\n");
      }
      System.out.println(sb);

    }catch(Exception e){
      System.out.println(e);
    }
  }
}