Hiring process8 levels
  1. 1 IQ Test
  2. 2 Additional Online Test (If Required)
  3. 3 Office Interview with Hiring Manager
  4. 4 Unpaid Test Task (Motivation Check)
  5. 5 Paid Test Task and Follow-Up Interview
  6. 6 Iterative Paid Test Tasks
  7. 7 Office Verification
  8. 8 Final Interview with the Founder

Problems > Grouped with Dashes

Grouped with Dashes

Difficulty: 900 2000 ms 128 MB

strings

Insert a dash after every K characters of S (no trailing dash).

Input: the first line has S; the second line has K.

Output: S grouped in K-sized chunks joined by dashes.

Constraints:

  • 1 ≤ |S| ≤ 104
  • 1 ≤ K ≤ |S|

Sample Tests

Input 1
abcdefgh
3
Output 1
abc-def-gh
Input 2
ab
2
Output 2
ab

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