Bitwise Tree — An interesting Problem

Правка en3, от dewansarthak1601, 2022-08-10 19:51:02

Given a Tree of n vertices numbered from 1 to n. Each edge is associated with some weight given by array tree_weight. There are q queries in the form of a 2-D array, queries, where each element consist of two integers (say, u and v). For each query, compute the sum of bitwise XOR, the bitwise AND, and the bitwise OR of the weights of the edges on the path from u->v. Return the answer to each query as an array of integers.

Example- n = 3 tree_from = [1,3] tree_to = [2,2] tree_weight = [2,3] q = 2 queries = [[1,3],[2,3]] Edges of the tree in the form (u,v,w) are (1,2,2),(3,2,3)

For query 0, u = 1, v = 3; XOR of the weights = 2 ^ 3 = 1 AND of the weights = 2 & 3 = 2 OR of the weights = 2 | 3 = 3 Hence the answer to this query is 1 + 2 + 3 = 6

For query 1, u = 2, v = 3; XOR of the weights = 3 AND of the weights = 3 OR of the weights = 3 Hence the answer to this query is 3 + 3 + 3 = 9 Return the array [6,9].

Теги trees, binary tree, lca, graphs, binary lifting

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  Rev. Язык Кто Когда Δ Комментарий
en5 Английский dewansarthak1601 2022-08-10 19:55:37 124
en4 Английский dewansarthak1601 2022-08-10 19:52:27 103 Tiny change: 'br>\nn = 3\ntree_fro' -> 'br>\nn = 3 <br>\ntree_fro'
en3 Английский dewansarthak1601 2022-08-10 19:51:02 496
en2 Английский dewansarthak1601 2022-08-10 19:43:32 4 Tiny change: 'integers (_say, u and v_). For eac' -> 'integers (say, u and v). For eac'
en1 Английский dewansarthak1601 2022-08-10 19:43:06 517 Initial revision (published)