Description

A numeronym is a word abbreviated using numbers to represent words or phrases. For example, the word internationalization can be abbreviated as i18n -- retaining the first and last letters, counting the number of letters between them, and placing the count in the middle. Since the abbreviation is intended to reduce the length of the word, it is only applied to words with a length greater than $3$, while words with a length less than or equal to $3$ remain unchanged.

Given a word, please output its numeronym.

Input

One line containing a string representing the word $s$ to be abbreviated ($1\le |s|\le 10^5$). It is guaranteed that the word contains only lowercase English letters.

Output

One line containing a string representing the resulting numeronym.

Samples

internationalization

i18n

accessibility

a11y

kubernetes

k8s

go

go

Resources

电子科技大学第十五届 ACM 趣味程序设计竞赛