
分治——01分数规划
Alex_McAvoy
想要成为渔夫的猎手
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Hard Life(POJ-3155)(最小割解法)
Problem DescriptionJohn is a Chief Executive Officer at a privately owned medium size company. The owner of the company has decided to make his son Scott a manager in the company. John fears that t...原创 2019-10-22 16:45:50 · 423 阅读 · 0 评论 -
Hard Life(POJ-3155)(最大权闭合图解法)
Problem DescriptionJohn is a Chief Executive Officer at a privately owned medium size company. The owner of the company has decided to make his son Scott a manager in the company. John fears that t...原创 2019-10-22 15:40:28 · 346 阅读 · 0 评论 -
Sightseeing Cows(POJ-3621)
Problem DescriptionFarmer John has decided to reward his cows for their hard work by taking them on a tour of the big city! The cows must decide how best to spend their free time.Fortunately, the...原创 2019-10-21 22:01:26 · 367 阅读 · 0 评论 -
Desert King(POJ-2728)(Dinkelbach 算法)
Problem DescriptionDavid the Great has just become the king of a desert country. To win the respect of his people, he decided to build channels all over his country to bring water to every village....原创 2019-10-21 19:48:57 · 448 阅读 · 0 评论 -
Desert King(POJ-2728)(二分解法)
Problem DescriptionDavid the Great has just become the king of a desert country. To win the respect of his people, he decided to build channels all over his country to bring water to every village....原创 2019-10-21 19:37:08 · 418 阅读 · 0 评论 -
Dropping tests(POJ-2976)(Dinkelbach 算法)
Problem DescriptionIn a certain course, you takentests. If you getaiout ofbiquestions correct on testi, your cumulative average is defined to beGiven your test scores and a positive inte...原创 2019-10-20 20:12:04 · 415 阅读 · 0 评论 -
Dropping tests(POJ-2976)(二分解法)
Problem DescriptionIn a certain course, you takentests. If you getaiout ofbiquestions correct on testi, your cumulative average is defined to beGiven your test scores and a positive inte...原创 2019-10-08 14:53:44 · 499 阅读 · 2 评论 -
分治 —— 01 分数规划
【概述】分数规划的一般形式为:特别的,当时,称为 01 分数规划简单来说,就是有一些二元组 (a[i],b[i]),现在从中选择某些二元组,使得最大或最小这一类题通用的解法是利用二分法来解决:假设 x 为最优解,对应的最优函数值为λ,那么有:即:于是可以构造函数当时,此时 λ 即为最优解也就是说,当某一个值 λ满足上述式子的时候,就是要求的值,...转载 2019-10-08 14:49:59 · 2296 阅读 · 0 评论