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https://vjudge.net/contest/314399#problem/B Anton has a positive integer nn, however, it quite looks like a mess, so he wants to make it beautiful aft 阅读全文
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https://vjudge.net/contest/310812#problem/F 给定一棵n 个点的树，每个点有权值。两个人玩游戏，先手需要占领若干不相邻的点，然后后手占领剩下所有点。每个人的得分为占领的点权异或和，分高的获胜。问最优策略下游戏的结果。1 ≤ n ≤ 105。Shortest 阅读全文
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https://vjudge.net/contest/314399#problem/E Edward is a worker for Aluminum Cyclic Machinery. His work is operating mechanical arms to cut out designe 阅读全文
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https://vjudge.net/contest/313233#problem/L Sample Input Sample Output 阅读全文
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Sample Input Sample Output 阅读全文
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https://vjudge.net/contest/313233#problem/D Input The first line of the input contains an integer TT (1≤T≤100)(1≤T≤100) denoting the number of test ca 阅读全文