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 C (GCC 5.4.1) (judge verdict: Accepted)

/*  ex6_2
    potter0723sw  */

#include <stdio.h>
#include <string.h>

int main(void){
    int num, last;
    char string[101];//ヌル文字分含め確保
    scanf("%s", string);
    num = (int)strlen(string) - 2;//省略する文字数は最初と最後以外の数（ヌル文字はカウントされてない）
    last = (int)strlen(string) - 1;//配列は0から始まることに注意
    printf("%c%d%c\n", string[0], num, string[last]);
    return 0;
}