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XYZZY(SPFA判正环)

It has recently been discovered how to run open-source software on the Y-Crate gaming device. A number of enterprising designers have developed Advent-style games for deployment on the Y-Crate. Your job is to test a number of these designs to see which ar

算法提高课-图论-负环-AcWing 1165. 单词环:spfa判正环、二分、01分数规划

文章目录 题目分析题目链接 题目分析 来源:acwing 分析: 如何建图? 这样建图。以样例举例。起点是前两个字母,终点是末尾两个字母,边权是字符串的长度。 我们求的是什么呢? 题目要求 Σ

算法提高课-图论-负环-AcWing 361. 观光奶牛:spfa判正环、负环、01分数规划、二分

文章目录 题目分析题目链接 题目分析 来源:acwing 分析: 题目要求 Σ f i