之前一直想着建图...遍历 可是推例子都不正确 后来看数据好像看出了点规律 就抱着试一试的心态水了一下 就....过了..... 后来想想我的思路还是对的 先抽象当前仅仅有两个点相连 想要拆分耗费最小,肯定拆相应权值较小的 在这个基础上考虑问题就能够了 代码例如以下: #include <cstdio> #include <iostream> #include <algorithm> #define MAXN 10010 #define ll long long usi…

版权声明:本文为博主原创文章,未经博主同意不得转载. https://blog.csdn.net/u011639256/article/details/28100041 题读错了啊... 一直跪,但刚開始我的思路是正确的 假设做出来了rating一定会暴涨的 我的方法是找出1到100000全部数相应的lowbit()值 再暴力,可惜题读错了,lowbit的意思是找出该数二进制数从右向左1出现的最早位置相应的数值 代码例如以下: #include <cmath> #include <sta…

D. The Child and Sequence Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/438/problem/D Description At the children's day, the child came to Picks's house, and messed his house up. Picks was angry at him. A lot of important…

B. The Child and Zoo Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/438/problem/B Description Of course our child likes walking in a zoo. The zoo has n areas, that are numbered from 1 to n. The i-th area contains ai animal…

A. The Child and Toy Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/438/problem/A Description On Children's Day, the child got a toy from Delayyy as a present. However, the child is so naughty that he can't wait to destroy…

题目链接:http://codeforces.com/problemset/problem/438/D 给你n个数,m个操作,1操作是查询l到r之间的和,2操作是将l到r之间大于等于x的数xor于x,3操作是将下标为k的数变为x. 注意成段更新的时候,遇到一个区间的最大值还小于x的话就停止更新. #include <iostream> #include <cstdio> #include <cstring> using namespace std; typedef __…

     好题啊,被HACK了.曾经做题都是人数越来越多.这次比赛 PASS人数 从2000直掉 1000人  被HACK  1000多人! ! ! ! 没见过的科技啊 1 2 4 8 这组数 被黑的 A. The Child and Homework time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Once upon a ti…

D. The Child and Sequence time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output At the children's day, the child came to Picks's house, and messed his house up. Picks was angry at him. A lot of…

D. The Child and Sequence time limit per test 4 seconds memory limit per test 256 megabytes input standard input output standard output At the children's day, the child came to Picks's house, and messed his house up. Picks was angry at him. A lot of…

D. The Child and Zoo time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Of course our child likes walking in a zoo. The zoo has n areas, that are numbered from 1 to n. The i-th area contains …