随笔分类 -  并查集

Rochambeau POJ - 2912
摘要：N children are playing Rochambeau (scissors-rock-cloth) game with you. One of them is the judge. The rest children are divided into three groups (it i 阅读全文
posted @ 2020-07-17 22:58 SummerMingQAQ 阅读(249) 评论(0) 推荐(0)
A Bug's Life POJ - 2492
摘要：A Bug's Life Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different gend 阅读全文
posted @ 2020-07-11 16:01 SummerMingQAQ 阅读(274) 评论(0) 推荐(0)
Navigation Nightmare POJ - 1984
摘要：Navigation Nightmare Farmer John's pastoral neighborhood has N farms (2 <= N <= 40,000), usually numbered/labeled 1..N. A series of M (1 <= M < 40,000 阅读全文
posted @ 2020-07-10 18:43 SummerMingQAQ 阅读(224) 评论(0) 推荐(0)
Parity game POJ - 1733
摘要：Parity game Now and then you play the following game with your friend. Your friend writes down a sequence consisting of zeroes and ones. You choose a 阅读全文
posted @ 2020-07-10 00:26 SummerMingQAQ 阅读(211) 评论(0) 推荐(0)
Supermarket POJ - 1456
摘要：Supermarket A supermarket has a set Prod of products on sale. It earns a profit px for each product x∈Prod sold by a deadline dx that is measured as a 阅读全文
posted @ 2020-07-09 22:39 SummerMingQAQ 阅读(216) 评论(0) 推荐(0)
True Liars POJ - 1417
摘要：True Liars After having drifted about in a small boat for a couple of days, Akira Crusoe Maeda was finally cast ashore on a foggy island. Though he wa 阅读全文
posted @ 2020-07-08 20:18 SummerMingQAQ 阅读(268) 评论(0) 推荐(0)
How Many Answers Are Wrong HDU - 3038 （带权并查集）
摘要：How Many Answers Are Wrong TT and FF are ... friends. Uh... very very good friends -________-b FF is a bad boy, he is always wooing TT to play the fol 阅读全文
posted @ 2020-07-08 19:48 SummerMingQAQ 阅读(231) 评论(0) 推荐(0)
带权并查集 —— POJ1182 食物链（转载）
摘要：传送门 1 #include <iostream> 2 #include <cstdio> 3 #include <algorithm> 4 #include <queue> 5 #include <vector> 6 #include <cmath> 7 8 using namespace std 阅读全文
posted @ 2020-07-06 22:05 SummerMingQAQ 阅读(298) 评论(0) 推荐(0)
The Suspects POJ - 1611
摘要：The Suspects 题目：编号为0的人有传染病，同组中只要有一个人有传染病，该组的人都被看做有传染病，一个人可以在多组中，问有多少人有传染病。 思路：并查集，需要压缩并查集的树，编号小的点优先作为祖先（0为root），并查集过程中传递祖先的同时传递祖先是否是病人，最后再次遍历所有人，使得祖先是 阅读全文
posted @ 2020-07-04 00:43 SummerMingQAQ 阅读(214) 评论(0) 推荐(0)
Wireless Network POJ - 2236
摘要：Wireless Network 思路：并查集，如果两个点可以相互传达，就是两个集合的合并，当然，前提是要两个点都被维修过。 1 #include <iostream> 2 #include <cstdio> 3 #include <algorithm> 4 #include <queue> 5 # 阅读全文
posted @ 2020-07-03 15:16 SummerMingQAQ 阅读(184) 评论(0) 推荐(0)