Problem:
Score : 200 points

Problem Statement

The word internationalization is sometimes abbreviated to i18n.
This comes from the fact that there are 18 letters between the first i and the last n.

You are given a string s of length at least 3 consisting of lowercase English letters.
Abbreviate s in the same way.

Constraints

3 ≤ |s| ≤ 100 (|s| denotes the length of s.)

s consists of lowercase English letters.

Input

Input is given from Standard Input in the following format:

s

Output

Print the abbreviation of s.

Sample Input 1

internationalization

Sample Output 1

i18n

Sample Input 2

smiles

Sample Output 2

s4s

Sample Input 3

xyz

Sample Output 3

x1z

Solution in PHP7 (7.0.15) (judge verdict: Accepted)

<?php

ini_set('error_reporting', E_ALL & ~E_NOTICE & ~E_WARNING);
ini_set('display_errors', 'Off');

// define('DEBUG', true);
define('DEBUG', false);

fscanf(STDIN, "%s", $s);

$num = strlen($s) - 2;
$arr = str_split($s);

echo $arr[0];
echo $num;
echo $arr[count($arr) - 1];
echo PHP_EOL;