How Many Answers Are Wrong 题意:输入一连串的区间和,问和前面的矛盾个数: 思路:我在做专题,知道是并查集,可是还是不知道怎么做,学了一下权值并查集和大佬的优秀思路,感觉回了一点: 具体就是 在并查集的基础上,加上val[]数组用来记录区间和,而原来的fa[]数组表示的是这个数能到达的最左边的下标: 下面是ac代码 #include <cstdio> #include <algorithm> using namespace std; ; ;//fa记录下标…
HDU 3081 Marriage Match II (二分图,并查集) Description Presumably, you all have known the question of stable marriage match. A girl will choose a boy; it is similar as the game of playing house we used to play when we are kids. What a happy time as so many…
传送门:http://acm.hdu.edu.cn/showproblem.php?pid=6464 免费送气球 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 264 Accepted Submission(s): 53 Problem Description 又到了GDUT一年一度的程序设计竞赛校赛的时间啦.同学们只要参加校赛,…
Conquer a New Region Time Limit: 8000/4000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 657 Accepted Submission(s): 179 Problem Description The wheel of the history rolling forward, our king conquered a new region i…
A Bug's Life Time Limit: 15000/5000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 9204 Accepted Submission(s): 2961 Problem Description Background Professor Hopper is researching the sexual behavior of a rare sp…
find the most comfortable road Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4899 Accepted Submission(s): 2131 Problem Description XX星有很多城市,城市之间通过一种奇怪的快速公路SARS(Super Air Roam Structure---超…