---
ch-1:
  - function: sortedmatrix
    arguments:
      - - 3
        - 1
        - 2
      - - 5
        - 2
        - 4
      - - 0
        - 1
        - 3
    result: 1
  - arguments:
      - - 2
        - 1
      - - 4
        - 5
    result: 4
  - arguments:
      - - 1
        - 0
        - 3
      - - 0
        - 0
        - 0
      - - 1
        - 2
        - 1
    result: 0
ch-2:
  - function: maxnumber
    arguments:
      - 1
      - 23
    result: 231
  - arguments:
      - 10
      - 3
      - 2
    result: 3210
  - arguments:
      - 31
      - 2
      - 4
      - 10
    result: 431210
  - arguments:
      - 5
      - 11
      - 4
      - 1
      - 2
    result: 542111
  - arguments:
      - 1
      - 10
    result: 110