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time limit per test 2 seconds memory limit per test 256 megabytes 题目链接:http://codeforces.com/contest/799/problem/C Description Arkady plays Gardenscap 阅读全文
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Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3486 Problem Descripti 阅读全文
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Time Limit: 6000MS Memory Limit: 65536K 题目链接:http://poj.org/problem?id=2452 Description Xuanxuan has n sticks of different length. One day, she puts a 阅读全文
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其实敲树剖敲多了就会手敲,然后就发现其实树剖也是可以求LCA的,根据树剖的经验,我们两遍dfs后关于询问l,r的情况我们就开始跳链,当l,r处于同一个链的时候返回深度较小的那个点就好了,这里给个例题: 题目链接:http://poj.org/problem?id=1330 Description A 阅读全文
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题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3183 Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Problem Descripti 阅读全文