题解 P1525 [关押罪犯]:种类并查集 前言: 在数据结构并查集中,种类并查集属于扩展域并查集一类. 比较典型的题目就是:食物链(比本题难一些,有三个种类存在) 首先讲一下本题的贪心,这个是必须要懂的.我们假设最后Z 市长看到的那个冲突事件的影响力为 x (也就是有一对仇恨值为 x 的罪犯在同一监狱)那么比 x 仇恨值更高的每一对罪犯必须分配到不同的监狱(不然,最终答案就不是 x ,而是这一对罪犯的仇恨值了): 所以本题是存在单调性的,只需要从大到小枚举仇恨值,到那一对与前面出现矛盾了,直接
Find them, Catch them Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 42416 Accepted: 13045 Description The police office in Tadu City decides to say ends to the chaos, as launch actions to root up the TWO gangs in the city, Gang Drago
Problem Description When ALPC42 got to a panzer brigade, He was asked to build software to help them regroup the battalions or companies. As the tradition of army, soldiers are rated according his or her abilities, taking the rate as an integer. The
A Bug's Life Time Limit: 10000MS Memory Limit: 65536K Total Submissions: 28211 Accepted: 9177 Description Background Professor Hopper is researching the sexual behavior of a rare species of bugs. He assumes that they feature two different genders
http://acm.hdu.edu.cn/showproblem.php?pid=1829 A Bug's Life Time Limit:5000MS Memory Limit:32768KB 64bit IO Format:%I64d & %I64u Submit Status Practice HDU 1829 Description Background Professor Hopper is researching the sexual behavior of a