testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [-8, 2, 17, 1, 4, 19, 5]
    output: 
    - 1 : 41
  - name: "testcase 2"
    inputs:
    - 1 : [7, 3, 4, -1, -3]
    output: 
    - 1 : 14
  - name: "testcase 3"
    inputs:
    - 1 : [-10, 9, 20, 12, 11, 15, 7]
    output: 
    - 1 : 46
  - name: "testcase 4"
    inputs:
    - 1 : [1, 2, 3]
    output: 
    - 1 : 6
  - name: "testcase 5"
    inputs:
    - 1 : [0]
    output: 
    - 1 : 0
  - name: "testcase 6"
    inputs:
    - 1 : [1, null, 2, null, 3, null, 4, null, 5]
    output: 
    - 1 : 15
  - name: "testcase 7"
    inputs:
    - 1 : [-10, 9, 20, null, null, 15, 7]
    output: 
    - 1 : 42
  - name: "testcase 8"
    inputs:
    - 1 : [1, -3, 3, 5, null, null, -5]
    output: 
    - 1 : 6