随笔分类 - 信息学竞赛
摘要:3545: [ONTAK2010]Peaks Description 在Bytemountains有N座山峰,每座山峰有他的高度h_i。有些山峰之间有双向道路相连,共M条路径,每条路径有一个困难值,这个值越大表示越难走,现在有Q组询问,每组询问询问从点v开始只经过困难值小于等于x的路径所能到达的山峰
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摘要:3551: [ONTAK2010]Peaks加强版 Description 【题目描述】同3545 【题目描述】同3545 Input 第一行三个数N,M,Q。 第二行N个数,第i个数为h_i 接下来M行,每行3个数a b c,表示从a到b有一条困难值为c的双向路径。 接下来Q行,每行三个数v x
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摘要:题目描述 本题的故事发生在魔力之都,在这里我们将为你介绍一些必要的设定。 魔力之都可以抽象成一个 n 个节点、m 条边的无向连通图(节点的编号从 1 至 n)。我们依次用 l,a 描述一条边的长度、海拔。 作为季风气候的代表城市,魔力之都时常有雨水相伴,因此道路积水总是不可避免 的。由于整个城市的排
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摘要:Programmers often have a preference among program constructs. For example, some may prefer if(0==a), while others may prefer if(!a). Analyzing such pa
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摘要:Eva would like to make a string of beads with her favorite colors so she went to a small shop to buy some beads. There were many colorful strings of b
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摘要:After finishing her tour around the Earth, CYLL is now planning a universal travel sites development project. After a careful investigation, she has a
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摘要:As the manager of your company, you have to carefully consider, for each project, the time taken to finish it, the deadline, and the profit you can ga
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摘要:It is vitally important to have all the cities connected by highways in a war. If a city is conquered by the enemy, all the highways from/toward that
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