Problem UVA10410-Tree Reconstruction Accept:708 Submit:4330 Time Limit: 3000 mSec Problem Description You have just finished a compiler design homework question where you had to find the parse tree of an expression. Unfortunately you left your assig…
为熟悉机房键盘而划水 #include <bits/stdc++.h> using namespace std; #define int long long const int N = 4000005; int R; namespace seg { int a[N], src[N]; void pushup(int p) { a[p] = a[p * 2] + a[p * 2 + 1]; } void build(int p, int l, int r) { if (l == r) { a[p…
题目描述 现在有一颗以1为根节点的由n个节点组成的树,树上每个节点上都有一个权值vi. 现在有Q 次操作,操作如下: 1 x y 查询节点x的子树中与y异或结果的最大值 2 x y z 查询路径x到y上点与z异或结果最大值 输入 第一行是两个数字n, Q; 第二行是n个数字用空格隔开,第i个数字vi表示点i上的权值 接下来n-1行,每行两个数,x,y,表示节点x与y之间有边 接下来Q行,每一行为一个查询,格式如上所述. 1 < n, Q ≤ 100000 ,查询1中的y ≤ 2…
E. e-Government time limit per test:1 second memory limit per test:256 megabytes input:standard input output:standard output The best programmers of Embezzland compete to develop a part of the project called "e-Government" — the system of automa…
Time Limit: 4000/2000 MS (Java/Others) Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 3192 Accepted Submission(s): 371 Problem Description You are given a rooted tree of N nodes, labeled from 1 to N. To the ith node a non-negat…
