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.

Examples

Input

internationalization

Output

i18n

Input

smiles

Output

s4s

Input

xyz

Output

x1z

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