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题目链接 /* 题意：给你含有n个节点的森林,和q次操作,每次操作包含两种情况 1. C a 表示删除a和父亲节点的连边 2. Q a b 表示询问a,b节点是否属于同一个同一棵树中 类型：并查集 分析：要做到删边之后仍然可以找到每棵树的根,那么在合并两个点的时候只 保存父亲节点是谁就行了,然后查找的

A. Ice Skating time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output Bajtek is learning to skate on ice. He's a b

小希的迷宫 Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 39256    Accepted Submission(s): 12049 Problem Description 上次Gardon的迷宫城堡小希玩了很

How Many Tables Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 21257    Accepted Submission(s): 10532 Problem Description Today is