testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [[2, 5, 7], [4, 6, 7]]
    - 2 : 2
    - 3 : 6
    output: 
    - 1 : 2
  - name: "testcase 2"
    inputs:
    - 1 : [[1, 12], [4, 5, 9], [9, 19],[10, 12, 13]]
    - 2 : 9
    - 3 : 12
    output:
    - 1 : -1
  - name: "testcase 3"
    inputs:
    - 1 : [[1, 12], [10, 5, 9], [4, 19], [10, 12, 13]]
    - 2 : 1
    - 3 : 9
    output:
    - 1 : 3
  - name: "testcase 4"
    inputs:
    - 1 : [[1, 9, 7, 8], [3, 6, 7], [4, 9], [8, 2, 3, 7], [2, 4, 5]]
    - 2 : 1
    - 3 : 5
    output:
    - 1 : 3
  - name: "testcase 5"
    inputs:
    - 1 : [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
    - 2 : 4
    - 3 : 6
    output:
    - 1 : 1
  - name: "testcase 6"
    inputs:
    - 1 : [[1, 2, 7], [3, 6, 7]]
    - 2 : 1
    - 3 : 6
    output:
    - 1 : 2
  - name: "testcase 7"
    inputs:
    - 1 : [[7, 12], [4, 5, 15], [6], [15, 19], [9, 12, 13]]
    - 2 : 15
    - 3 : 12
    output:
    - 1 : -1
  - name: "testcase 8"
    inputs:
    - 1 : [[1, 2, 3], [4, 5, 6], [7, 8, 9]]
    - 2 : 1
    - 3 : 9
    output:
    - 1 : -1