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题目2 : 增加得分描述小Hi在玩一款游戏，游戏中有N名玩家，每名玩家都有一个自己的当前分数A1, A2, ... AN。其中A1是小Hi的分数。  现在小Hi有2种方式提升自己的得分1. 将自己的得分A1直接增加1分。该方式会消耗X枚金币2. 从A2~AN中选则一名对手Ai，将自己的得分A1直接增加1分，对手Ai的得分减少1分。该方式会消耗Y枚金币。小Hi的目标是成为N名...

You are given sequence a1, a2, ..., an of integer numbers of length n. Your task is to find such subsequence that its sum is odd and maximum among all such subsequences. It's guaranteed that given seq...

迫真小游戏题目链接：https://cometoj.com/contest/46/problem/C?problem_id=2028题目描述H君喜欢在阳台晒太阳，闲暇之余他会玩一些塔防小游戏。H君玩的小游戏可以抽象成一棵nn个节点的有根树，树以11为根，每个点的深度定义为其到根的简单路径上的点数（根的深度为11）。H君有nn个干员，H君会按照某种顺序把她们部...

题目链接:http://codeforces.com/contest/1073/problem/DXXI Berland Annual Fair is coming really soon! Traditionally fair consists ofnnbooths, arranged in a circle. The booths are numbered11throughnnc...