Zjnu Stadium Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3726    Accepted Submission(s): 1415 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built…

题意: 300个座位构成一个圈. 有N个人要入座. 共有M个说明 :A B X ,代表B坐在A顺时针方向第X个座位上.如果这个说明和之前的起冲突,则它是无效的. 问总共有多少个无效的. 思路: 并查集的询问方式,,,, 直接看代码吧! 代码: int n,m; int fa[50005]; int dis[50005]; int findFa(int x){ if(fa[x]==x) return fa[x]; int t=findFa(fa[x]); dis[x]+=dis[fa[x]]; r…

Zjnu Stadium Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1686    Accepted Submission(s): 634 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built i…

题意: 有一个运动场,运动场的坐席是环形的,有1~300共300列座位,每列按有无限个座位计算T_T. 输入: 有多组输入样例,每组样例首行包含两个正整数n, m.分别表示共有n个人,m次操作. 接下来m行,每行包含a, b, x三个整数,表示a在b右边x个位置. 输出: 如果a,b的关系已经存在,新操作如果获得的位置关系与已存在的关系不同,则ans+1.输出ans,每组输出占一行. 用加权并查集可以解决.权值存在val[]数组里,val[i]的含义为从i到根节点的距离. 由于是一个长度为300…

Zjnu Stadium Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3186    Accepted Submission(s): 1226 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built…

Zjnu Stadium Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 3179 Accepted Submission(s): 1224 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built in Zh…

这道题说,在很久很久以前,有一个故事.故事的名字叫龙珠.后来,龙珠不知道出了什么问题,从7个变成了n个. 在悟空所在的国家里有n个城市,每个城市有1个龙珠,第i个城市有第i个龙珠. 然后,每经过一段时间,城市i的所有的龙珠都会被转移到城市j中. 现在有两种操作: 1. T A B,表示将A龙珠所在城市的所有龙珠全部转移到B龙珠所在城市去. 2. Q A,表示询问A龙珠所在的城市X,以及X城市有几个龙珠,A龙珠被转移了几次. 输入: 第一行输入1个整型数字t,表示一共t组测试样例. 接下来,每组样…

Description Background  Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposite gender. In his experiment, individual bugs…

Description Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders and that they only interact with bugs of the opposite gender. In his experiment, individual bugs…

P1196 银河英雄传说 题目描述 公元五八○一年,地球居民迁移至金牛座α第二行星,在那里发表银河联邦 创立宣言,同年改元为宇宙历元年,并开始向银河系深处拓展. 宇宙历七九九年,银河系的两大军事集团在巴米利恩星域爆发战争.泰山压 顶集团派宇宙舰队司令莱因哈特率领十万余艘战舰出征,气吞山河集团点名将杨 威利组织麾下三万艘战舰迎敌. 杨威利擅长排兵布阵,巧妙运用各种战术屡次以少胜多,难免恣生骄气.在 这次决战中,他将巴米利恩星域战场划分成30000列,每列依次编号为1, 2, …, 30000.之后…

传送门 解题思路 加权并查集: 什么是加权并查集? 就是记录着每个节点到它的父亲的信息(权值等). 难点:在路径压缩和合并节点时把本节点到父亲的权值转化为到根节点的权值 怎么转化呢? 每道题都不一样QAQ 看一看这道题我们用r[x]=0表示是x和f[x]是同种生物,等于1表示x吃f[x],等于2表示x是f[x]的食物. 从x点到f[x]的权值更新为i点到祖宗的权值的方法: 由于路径压缩是递归实现,所以其实返回f[x]=find(f[x])时,f[f[x]]就是祖宗. 所以其实就是这样一张图: 然…

已知有 x[0-(n-1)],但是不知道具体的值,题目给定的信息 只有 I P V,说明 Xp=V,或者 I P Q V,说明 Xp ^ Xq=v,然后要求回答每个询问,询问的是 某任意的序列值 Xp1^Xp2,,,,X^pk 这个题目用加权并查集是这么处理的: 1. f[]照样是代表父节点,照样进行路径压缩,把每个 V[i]=V[i]^V[f[i]],即节点存储的值实际是它与它父亲的异或的值.为什么要这样呢,因为异或首先满足交换律,而且异或同一个数偶数次,即相当于本身,那么这个题目的其中一个要…

锟斤拷锟接o拷https://www.nowcoder.com/acm/contest/119/A锟斤拷源锟斤拷牛锟斤拷锟斤拷 锟斤拷目锟斤拷锟斤拷 It锟斤拷s universally acknowledged that there锟斤拷re innumerable trees in the campus of HUST. One day the tree manager wants to play a game with you. There are N trees lining up in…

Zjnu Stadium Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 1631    Accepted Submission(s): 616 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built…

http://acm.hdu.edu.cn/showproblem.php?pid=3047 题意: 给出n个座位,有m次询问,每次a,b,d表示b要在a右边d个位置处,问有几个询问是错误的. 思路: 基础带权并查集. #include<iostream> #include<cstdio> using namespace std; +; int n,m; int p[maxn],r[maxn]; int finds(int x) { if(p[x]==x) return x; in…

http://acm.hdu.edu.cn/showproblem.php?pid=3047 [题意] http://blog.csdn.net/hj1107402232/article/details/9921311 [Accepted] #include<iostream> #include<cstdio> #include<cstring> #include<string> #include<cmath> #include<algor…

Zjnu Stadium Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1744    Accepted Submission(s): 660 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built i…

M - Zjnu Stadium Time Limit:1000MS     Memory Limit:32768KB     64bit IO Format:%I64d & %I64u Submit Status Description In 12th Zhejiang College Students Games 2007, there was a new stadium built in Zhejiang Normal University. It was a modern stadium…

Zjnu Stadium 题目链接 http://acm.hdu.edu.cn/showproblem.php?pid=3047 Problem Description In 12th Zhejiang College Students Games 2007, there was a new stadium built in Zhejiang Normal University. It was a modern stadium which could hold thousands of peop…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1558 解题报告:首先如果两条线段有交点的话,这两条线段在一个集合内,如果a跟b在一个集合内,b跟c在一个集合内,那么a跟c在一个集合内.在一个平面上,有两种操作: P:在这个平面上添加一条线段 Q k:询问添加的第k条线段所在的那个集合有多少条线段 用并查集,然后就是要判断一下线段有没有交点.还有就是题目要求两个test之间要有空行,为此我还PE了一次. #include<cstdio> #inc…

小希的迷宫 Time Limit: 20 Sec  Memory Limit: 256 MB 题目连接 http://acm.hdu.edu.cn/showproblem.php?pid=1272 Description 上次Gardon的迷宫城堡小希玩了很久(见Problem B),现在她也想设计一个迷宫让Gardon来走.但是她设计迷宫的思路不一样,首先她认为所有的通道都应该是双向连通的,就是说如果有一个通道连通了房 间A和B,那么既可以通过它从房间A走到房间B,也可以通过它从房间B走到房间…

Problem Description Five hundred years later, the number of dragon balls will increase unexpectedly, so it's too difficult for Monkey King(WuKong) to gather all of the dragon balls together. His country has N cities and there are exactly N dragon bal…

 本题链接:http://acm.hdu.edu.cn/showproblem.php?pid=1272 Problem Description: 上次Gardon的迷宫城堡小希玩了很久(见Problem B),现在她也想设计一个迷宫让Gardon来走.但是她设计迷宫的思路不一样,首先她认为所有的通道都应该是双向连通的,就是说如果有一个通道连通了房间A和B,那么既可以通过它从房间A走到房间B,也可以通过它从房间B走到房间A,为了提高难度,小希希望任意两个房间有且仅有一条路径可以相通(除非走了回头…

http://acm.hdu.edu.cn/showproblem.php?pid=4496 题意: 给出n个顶点m条边的图,每次选择一条边删去,求每次删边后的连通块个数. 思路: 离线处理删边,从后往前处理变成加边,用并查集维护连通块个数.其实这题和BZOJ 1015差不多. #include<iostream> #include<cstdio> #include<cstring> using namespace std; int n, m, tot, num; ],…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1213 Today is Ignatius' birthday. He invites a lot of friends. Now it's dinner time. Ignatius wants to know how many tables he needs at least. You have to notice that not all the friends know each other,…

http://acm.hdu.edu.cn/showproblem.php?pid=4641 https://blog.csdn.net/asdfgh0308/article/details/40969047 给一个小写字母字符串,1 a表示在字符串尾部添加一个小写字母a,2 表示当前有多少种子串出现次数大于等于K. 求出现次数桶排序(说是拓扑排序也可以?)就阔以了,种类就是t[i].len-t[t[i].f].len. 在线处理是直接扫描,时间复杂度是O(树高*m). 离线做法是先把所有添加操…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=2545 树上战争 Time Limit: 10000/4000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 564    Accepted Submission(s): 305 Problem Description 给一棵树,如果树上的某个节点被某个人占据,则它的所有儿子都被占据,…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=1232 畅通工程 Time Limit: 4000/2000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 31088    Accepted Submission(s): 16354 Problem Description 某省调查城镇交通状况,得到现有城镇道路统计表,表中列出了每条…

数据分割 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 1119    Accepted Submission(s): 268 Problem Description 小w来到百度之星的赛场上,准备开始实现一个程序自动分析系统. 这个程序接受一些形如xi=xj 或 xi≠xj 的相等/不等约束条件作为输入,判定是否可以通过给每个 w 赋…

http://acm.hdu.edu.cn/showproblem.php?pid=3974 题目大意: 一个公司有N个员工,对于每个员工,如果他们有下属,那么他们下属的下属也是他的下属. 公司会给员工安排任务,分配给一个员工后,他也会把这个任务分配给下属.被分配到任务的人立刻停止 当前在做的工作,接受新的任务. 对于给定的M个操作 C x  输出编号为x的任务 T x y  分配任务y给x 思路: 并查集的实现,分配我们只记录在上司结点里,只不过查询的时候要把它的所有上司全部找一遍. #inc…