Question
You are given a list of positive integers. Repeatedly perform this operation: take the two largest values x and y (with x >= y) out of the list; if x equals y, both disappear; otherwise put x - y back. Stop when at most one value remains. Return the final remaining value, or 0 if nothing remains. The starting list may also be empty (return 0) or hold a single value (return it). Example: values = [2, 7, 4, 1, 8, 1] gives 1.
final_value(values: list[int]) → int[[2,7,4,1,8,1]]out1State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.
Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.