100691: [AtCoder]ABC069 B - i18n

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