Description 有n对夫妇,一开始夫妇之间互不认识,若两男或两女成为朋友,称他们为"熟人","熟人"关系具有传递性,即若a熟b且b熟c则a熟c.若两组夫妇的丈夫互相为熟人且妻子也相互为熟人则称他们为"熟悉的一对",现在给出q个事件,每个事件会使得两男或两女成为朋友,并在每次事件之后计算"熟悉的一对"的个数. Input 第一行一个数T表示数据组数 接下来n,q表示对数和事件数 接下来q行,每行t,a,b,若t=1,表示…

Search GO 说明:输入题号直接进入相应题目,如需搜索含数字的题目,请在关键词前加单引号 Problem ID Title Source AC Submit Y 1000 A+B Problem 10983 18765 Y 1036 [ZJOI2008]树的统计Count 5293 13132 Y 1588 [HNOI2002]营业额统计 5056 13607 1001 [BeiJing2006]狼抓兔子 4526 18386 Y 2002 [Hnoi2010]Bounce 弹飞绵羊 43…

题目地址:1021. Couples 思路: 想清楚了这道题其实很简单.利用夫妻出现的位置作为下标,并设为同一值,第一对夫妻值为1,第二对为2,以此类推,存储完毕即可进入下一步. 利用栈这个数据结构:遍历这个数组,当栈不为空且栈顶元素等于数组出现的元素时,pop掉栈顶元素,其余情况则入栈.循环完毕,若栈为空则为Yes,否则为No. 具体代码如下: #include <iostream> #include <stack> using namespace std; int main()…

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N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number of swaps so that every couple is sitting side by side. A swap consists of choosing any two people, then they stand up and switch seats. The people…

N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number of swaps so that every couple is sitting side by side. A swapconsists of choosing any two people, then they stand up and switch seats. The people a…

[CC-COUPLES]Couples sit next to each other 题目大意: 有\(n(n\le5\times10^5)\)对小伙伴共\(2n\)个人坐成一圈.刚开始编号为\(i\)的人坐在第\(i\)个座位上.每次可以让相邻的两个人交换座位.问要让每一对小伙伴的座位都相邻至少需要多少次交换? 思路: 答案为每一对两个人距离之和-"交叉"的小伙伴的对数.树状数组维护即可. 时间复杂度\(\mathcal O(n\log n)\). 源代码: #include<…

When marriage therapist Sharon Gilchrest O'Neill met with new clients recently, she asked them why they were seeking therapy. The couple told her they'd spent years arguing over finances and recently had their worst-ever blowup. The husband complaine…

Damn Couples Time Limit: 1 Second      Memory Limit: 32768 KB As mentioned in the problem "Couples", so many new words appear on the internet. Another special one is "Damn Couples", a club which consists of people who have failed on lo…

N couples sit in 2N seats arranged in a row and want to hold hands. We want to know the minimum number of swaps so that every couple is sitting side by side. A swap consists of choosing any two people, then they stand up and switch seats. The people…