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:
[14, 4, 11, 7, 35, 15, 43, 26, 30, 1, 17, 18, 10, 47, 16, 37, 29, 34, 3, 41], target=49
answer:
[14, 35]


question:
[23, 32, 14, 10, 1, 28, 41, 45, 11, 35, 39, 6, 15, 7, 37, 33, 42, 26, 4, 2], target=11
answer:
[10, 1]


question:
[48, 37, 40, 31, 25, 44, 2, 5, 32, 16, 47, 49, 13, 42, 33, 38, 8, 22, 39, 3], target=71
answer:

[40, 31]