# Time: O(q * n) # Space: O(1) # tree, lca class Solution(object): def cycleLengthQueries(self, n, queries): """ :type n: int :type queries: List[List[int]] :rtype: List[int] """ result = [] for x, y in queries: cnt = 1 while x != y: if x > y: x, y = y, x y //= 2 cnt += 1 result.append(cnt) return result