testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [2, 4]
    - 2 : [1,2,3,4]
    output: 
    - 1 : [3, -1]
  - name: "testcase 2"
    inputs:
    - 1: [1, 3]
    - 2: [1, 2, 3, 4]
    output:
    - 1 : [2, 4]
  - name: "testcase 3"
    inputs:
    - 1 : [1,10]
    - 2 : [1,3,5,10]
    output: 
    - 1 : [3, -1]
  - name: "testcase 4"
    inputs:
    - 1: [15, 13]
    - 2: [10,12,13,15,9]
    output:
    - 1 : [-1, 15]
  - name: "testcase 5"
    inputs:
    - 1: [137,59,92,122,52,131,79,236]
    - 2: [137,59,92,122,52,131,79,236]
    output:
    - 1 : [236,92,122,131,131,236,236,-1]