题目描述
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-----
internationalization
-----Sample Output-----
i18n
输入格式
见题面
输出格式
见题面
样例输入
internationalization
样例输出
i18n