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:
[10, 6, 3, 21, 4, 13, 2, 16, 41, 17, 26, 39, 37, 31, 29, 18, 15, 9, 45, 47], target=87
answer:
[]


question:
[29, 10, 45, 19, 24, 21, 3, 25, 30, 11, 16, 44, 26, 17, 48, 31, 43, 12, 1, 34], target=41
answer:
[30, 11]


question:
[41, 14, 21, 26, 12, 23, 39, 40, 16, 34, 17, 9, 25, 42, 15, 43, 1, 8, 4, 49], target=65
answer:

[26, 39]