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:
[21, 7, 19, 49, 46, 37, 29, 9, 10, 31, 24, 4, 22, 3, 14, 12, 36, 17, 26, 44], target=50
answer:
[21, 29]


question:
[4, 18, 3, 8, 29, 11, 39, 30, 24, 1, 40, 17, 21, 2, 32, 49, 15, 43, 16, 10], target=25
answer:
[24, 1]


question:
[26, 42, 1, 46, 15, 11, 23, 18, 4, 25, 39, 49, 30, 47, 13, 9, 29, 19, 2, 35], target=59
answer:

[46, 13]