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 (Clang 3.8.0) (judge verdict: Accepted)

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

#define BUF_SIZE 102
int main(void) {
  char line[BUF_SIZE];
  FILE *fp;
  fp = stdin;
  if(!fgets(line, BUF_SIZE, fp)) return 0;
  size_t len = strlen(line);
  if(line[len-1] == '\n') {
    len--;
  }
  printf("%c%d%c\n", line[0], (int)len-2, line[len-1]);

  return 0;
}