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.

Input

Input is given from Standard Input in the following format:
s

Output

Print the abbreviation of s.

Constraints

• 3 ≤ |s| ≤ 100 (|s| denotes the length of s.)
• s consists of lowercase English letters.

Sample Input 1

internationalization

Sample Output 1

i18n

Sample Input 2

smiles

Sample Output 2

s4s

Sample Input 3

xyz

Sample Output 3

x1z

见题面 Input 部分

见题面 Output 部分