instruction:
You are given a list of integers and an integer target, return a list of a pair of numbers in any order such that they add up to target. If there is no such pair of numbers, then return an empty list
question:
[34, 25, 11, 36, 15, 4, 18, 39, 2, 31, 22, 28, 41, 42, 35, 30, 8, 20, 23, 29], target=48
answer:
[18, 30]


question:
[45, 32, 24, 6, 38, 10, 20, 30, 46, 44, 48, 9, 29, 22, 1, 12, 42, 27, 37, 43], target=83
answer:
[45, 38]


question:
[26, 44, 13, 17, 14, 42, 35, 16, 27, 33, 36, 4, 30, 37, 15, 11, 9, 24, 22, 45], target=76
answer: