UVALive - 4329：Ping pong

最新推荐文章于 2019-09-27 21:03:01 发布

wingrez

最新推荐文章于 2019-09-27 21:03:01 发布

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分类专栏：【记录】算法题解

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这是一个关于乒乓球比赛的问题，N名玩家沿东西方向的街道居住，他们的技能排名不同。玩家必须选择技能排名介于他们之间的裁判，并确保比赛距离不超过他们之间的距离。问题要求计算可以举行多少种不同的比赛。输入包含测试用例数T以及每个用例的玩家数量N和他们的技能排名，输出为不同比赛的数量。

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Ping pong

来源：UVALive

标签：树状数组

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题目

N (3 ≤ N ≤ 20000) ping pong players live along a west-east street(consider the street as a line segment). Each player has a unique skill rank. To improve their skill rank, they often compete with each other. If two players want to compete, they must choose a referee among other ping pong players and hold the game in the referee’s house. For some reason, the contestants can’t choose a referee whose skill rank is higher or lower than both of theirs. The contestants have to walk to the referee’s house, and because they are lazy, they want to make their total walking distance no more than the distance between

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