这题是一道简单的并查集的运用.龙珠所在的城市.该城市龙珠数目都是很简单的问题,稍微麻烦一点的就是龙珠被移动的次数,因为每一次要移动的是一个城市中所有的龙珠,所以每次移动该城市中所有龙珠的移动次数都要加一. 一开始用二维数组存放每个城市中龙珠的编号,MLE了.接着改用map嵌套queue,却TLE了,不过这个是意料之中的.后来再想想,发现自己有点蠢,其实每个龙珠移动的次数等于它移动的次数加上它根节点移动的次数,这样问题就变得简单了.这就类似于从根节点到当前结点的一个权值累积过程,这时候的Find(…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 3363    Accepted Submission(s): 1304 Problem Description Five hundred years later, the number of dragon balls will increase unexpecte…

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…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 7926    Accepted Submission(s): 2937 Problem Description Five hundred years later, the number of dragon balls will increase unexpecte…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2909    Accepted Submission(s): 1125 Problem Description Five hundred years later, the number of dragon balls will increase unexpecte…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 5340    Accepted Submission(s): 2014 Problem Description Five hundred years later, the number of dragon balls will increase unexpect…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 8072    Accepted Submission(s): 2991 Problem Description Five hundred years later, the number of dragon balls will increase unexpect…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 784 Accepted Submission(s): 317   Problem Description Five hundred years later, the number of dragon balls will increase unexpectedly,…

 Balls and Boxes(盒子与球) Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others) Description 题目描述 Mr. Chopsticks is interested in random phenomena, and he conducts an experiment to study randomness. In the experiment, he thr…

Dragon Balls Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4384    Accepted Submission(s): 1673 Problem Description Five hundred years later, the number of dragon balls will increase unexpecte…