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: Wrong Answer)

<?php
  
$n = trim(fgets(STDIN));
$f = $n[0];
$l = $n[strlen($n)-1];

$m = ltrim($n,$f);
$m = rtrim($m,$l);

echo $f.strlen($m).$l;

?>