[ABC274Ex] XOR Sum of Arrays

section> Problem Statement For sequences $B=(B_1,B_2,\dots,B_M)$ and $C=(C_1,C_2,\dots,C_M)$, each of length $M$, consisting of non-negative integers, let theXOR sum $S(B,C)$ of $B$ and $C$ be defined as the sequence $(B_1\oplus C_1, B_2\oplus C_2, …, B_{M}\oplus C_{M})$ of length $M$ consisting of non-negative integers. Here, $\oplus$ represents bitwise XOR. For instance, if $B = (1, 2, […]

[CF1788F] XOR, Tree, and Queries

Problem Description You are given a tree of $ n $ vertices. The vertices are numbered from $ 1 $ to $ n $ . You will need to assign a weight to each edge. Let the weight of the $ i $ -th edge be $ a_i $ ( $ 1 \leq i \leq […]

NOIP2023 simulates 7 joint test 28 XOR

The main idea of the title Given a length of n n n sequence of non-negative integers a a a, you need to perform a series of operations, and select an interval for each operation [ l , r ] [l,r] [l,r], for all l ≤ i ≤ r l\leq i\leq r l≤i≤r, will a […]

1879D – Sum of XOR Functions

Problem Portal: Problem – 1879D – Codeforces Binary splitting method handles bit operations Question: Find , that is, find the XOR values of all intervals multiplied by their lengths. Solution: Because of the derivation of the XOR operation, it was found that the properties of the answer to this formula could not be quickly calculated, […]

Codeforces Round 899 div2 D. Tree XOR

Question meaning There is one n n A tree of n nodes, each node has a weight a i a_i ai?, now we need to perform the following operations several times to change the point weight of each point on the tree to all the same. Assume that a certain point is used as the […]

D. Sum of XOR Functions

Something about the XOR problem Read this article first Let’s look at a classic example first XOR sequence Solution C++ code is as follows (first type) #include <bits/stdc + + .h> using i64 = long long; using PII = std::pair<i64,i64>; #define int i64 #define yes std::cout << “YES\\ “; #define no std::cout << “NO\\ “; […]