4756: [Usaco2017 Jan]Promotion Counting Time Limit: 10 Sec Memory Limit: 128 MBSubmit: 305 Solved: 217[Submit][Status][Discuss] Description The cows have once again tried to form a startup company, failing to remember from past experience t hat cow…
调半天原来是dsu写不熟 Description The cows have once again tried to form a startup company, failing to remember from past experience t hat cows make terrible managers!The cows, conveniently numbered 1…N1…N (1≤N≤100,000), organize t he company as a tree, with…
题意 题目链接 Sol 线段树合并板子题 #include<bits/stdc++.h> using namespace std; const int MAXN = 400000, SS = MAXN * 21; inline int read() { char c = getchar(); int x = 0, f = 1; while(c < '0' || c > '9') {if(c == '-') f = -1; c = getchar();} while(c >=…
传送门:http://www.lydsy.com/JudgeOnline/problem.php?id=4756 [题解] dsu on tree,树状数组直接上 O(nlog^2n) # include <vector> # include <stdio.h> # include <string.h> # include <iostream> # include <algorithm> // # include <bits/stdc++.…
题目描述 The cows have once again tried to form a startup company, failing to remember from past experience t hat cows make terrible managers!The cows, conveniently numbered 1…N1…N (1≤N≤100,000), organize t he company as a tree, with cow 1 as the preside…
描述 The cows have once again tried to form a startup company, failing to remember from past experience t hat cows make terrible managers!The cows, conveniently numbered 1-N1-N (1≤N≤100,000), organize t he company as a tree, with cow 1 as the president…
Description The cows have once again tried to form a startup company, failing to remember from past experience that cows make terrible managers!The cows, conveniently numbered 1…N1…N (1≤N≤100,000), organize the company as a tree, with cow 1 as the pr…
