Question
Given a small array of non-negative integers and a target value, count how many subsets (including the empty subset) have a bitwise XOR exactly equal to the target. Values fit in a modest bit width. Use a DP over a dictionary mapping achievable XOR values to their subset counts, processing one element at a time (each element either toggles into the XOR or is skipped). The empty subset has XOR 0.
count_xor_subsets(nums: list[int], target: int) → int[[1,2,3],0]out2State 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.