testcases:
  - name: "testcase 1"
    inputs:
    - 1 : 42
    output: 
    - 1 : 21
  - name: "testcase 2"
    inputs:
    - 1: 8
    output:
    - 1 : 7
  - name: "testcase 3"
    inputs:
    - 1: 233
    output:
    - 1: 22
  - name: "testcase 4"
    inputs:
    - 1: 100
    output:
    - 1: 27
  - name: "testcase 5"
    inputs:
    - 1: 11111
    output:
    - 1: 5272