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 Common Lisp (SBCL 2.0.3) (judge verdict: Accepted)

(let* ((s (concatenate 'list (read-line)))
       (f (string (car s)))
       (b (string (car (reverse s)))))

  (format t "~A~%"
          (concatenate 'string f (write-to-string (- (length s) 2)) b)))