HBC24991[网络流24题]最长k可重区间集问题[USACO 2008 Dec S]Hay For Sale题解

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Farmer John suffered a terrible loss when giant Australian cockroaches ate the entirety of his hay inventory, leaving him with nothing to feed the cows. He hitched up his wagon with capacity C (1

Farmer John suffered a terrible loss when giant Australian cockroaches ate the entirety of his hay inventory, leaving him with nothing to feed the cows. He hitched up his wagon with capacity C (1 <= C <= 50,000) cubic units and sauntered over to Farmer Don's to get some hay before the cows miss a meal. Farmer Don had a wide variety of H (1 <= H <= 5,000) hay bales for sale, each with its own volume (1 <= Vi <= C). Bales of hay, you know, are somewhat flexible and can be jammed into the oddest of spaces in a wagon. FJ carefully evaluates the volumes so that he can figure out the largest amount of hay he can purchase for his cows. Given the volume constraint and a list of bales to buy, what is the greatest volume of hay FJ can purchase? He can't purchase partial bales, of course. Each input line (after the first) lists a single bale FJ can buy.

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标签： HBC24991[网络流24题]最长k可重区间集问题[USACO 2008 Dec S]Hay For Sale题解