Buy or Build Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 1369   Accepted: 542 Description World Wide Networks (WWN) is a leading company that operates large telecommunication networks. WWN would like to setup a new network in Borduri…

最小生成树算法简单 只是增加了一些新的东西,对于需要最小生成树算法 和中 并检查使用的一系列 还有一些更深入的了解. 方法的一些复杂问题 #include<cstdio> #include<cstring> #include<vector> #include<algorithm> using namespace std; const int maxn = 1005; struct point { int x; int y; }pp[maxn]; struct…

题目链接:http://poj.org/problem?id=2784 Buy or Build Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 1528   Accepted: 592 Description World Wide Networks (WWN) is a leading company that operates large telecommunication networks. WWN would li…

Buy or Build Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 1348   Accepted: 533 Description World Wide Networks (WWN) is a leading company that operates large telecommunication networks. WWN would like to setup a new network in Borduri…

POJ 2828 Buy Tickets(排队问题,线段树应用) ACM 题目地址:POJ 2828 Buy Tickets 题意:  排队买票时候插队.  给出一些数对,分别代表某个人的想要插入的位置Pos_i和他的Val_i,求出最后的队列的val顺序. 分析:  也是一道非常巧妙的题目.  刚開始天真的以为sort一下即可了.wa了一发后发现我错了...  原来能够非常巧妙的用线段树做.因为某个人想要插入posi位置,插入后他就在posi位置上了,可是可能其它人会插到他前面来,他的位置就会…

题目链接:poj 2828 Buy Tickets 题目大意:给定N,表示有个人,给定每一个人站入的位置,以及这个人的权值,如今按队列的顺序输出每一个人的权值. 解题思路:第K大元素,非常巧妙,将人入队的顺序倒过来看,就是纯第K大问题,然后用树状数组还是线段树就都能够做了. C++ 线段树 #include <cstdio> #include <cstring> #include <algorithm> using namespace std; const int ma…

题目:id=2828" target="_blank">poj 2828 Buy Tickets 题意:有n个人排队,每一个人有一个价值和要插的位置,然后当要插的位置上有人时全部的人向后移动一位当这个插入到这儿,假设没有直接插进去. 分析:分析发现直接插入移动的话花时间太多.我们可不能够用逆向思维. 从后往前来.由于最后一个位置是肯定能确定的,而其它的则插入空的第某个位置. 比方第一组例子: 4 0 77 1 51 1 33 2 69 開始时候位置都为空 编号0 1 2…

题目传送门 /* 结点存储下面有几个空位 每次从根结点往下找找到该插入的位置, 同时更新每个节点的值 */ #include <cstdio> #define lson l, m, rt << 1 #define rson m+1, r, rt << 1 | 1 + ; int pos[MAX_N], val[MAX_N]; ]; int que[MAX_N]; int id; void build(int l, int r, int rt) { sum[rt] = r…

Description Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue… The Lunar New Year was approaching, but unluckily the Little Cat still had schedules going here and there. Now, he ha…

题目链接: 传送门 Buy Tickets Time Limit: 4000MS     Memory Limit: 65536K Description Railway tickets were difficult to buy around the Lunar New Year in China, so we must get up early and join a long queue- The Lunar New Year was approaching, but unluckily t…