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 JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

function main(input){
    var s = input;
    var head = s.slice(0,1);
    var tail = s.slice(-1);
    var len = s.length-2;
    console.log(head+len+tail);
}

main(require("fs").readFileSync("/dev/stdin", "utf8"));