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 PHP (5.6.30) (judge verdict: Runtime Error)

<?php
$in = trim(fgets(STDIN));
$len = mb_strlen($in);
$str = array();
$str[] = $in{0};
$str[] = $len - 2;
$str[] = $in{$len-1};
echo implode("", $str).PHP_EOL;