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 PHP (judge verdict: Accepted)

<?php
    $line_a ="";
    while($line = trim(fgets(STDIN))){
        $line_a = $line_a.$line;
    }
    $line = str_split($line_a);
    // $line = str_split((fgets(STDIN)));
    $A = array_fill(65,122,0);
    // var_dump($A);
    foreach($line as $char){
        $ACS = ord($char);
        if(65<=$ACS && $ACS<=122){
            if($ACS<=90){
                $A[$ACS+32] += 1;
            }else{
                $A[$ACS] += 1;
            }
            // echo $ACS."\n";
        }
        
    }
    // var_dump($A);
    
    
    
    for ( $i = 97; $i <= 122; $i++ ){
	    print chr($i)." : ".$A[$i]."\n";
    }
?>