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Problem DescriptionThe Princess has been abducted by the BEelzebub feng5166, our hero Ignatius has to rescue our pretty Princess. Now he gets into feng5166's castle. The castle is a large labyrinth. T...

Wormholes Time Limit: 2000MS   Memory Limit: 65536K Total Submissions: 61417   Accepted: 22899 Description While exploring his many farms, Farmer John has discovered a number of amaz...

当时队友都在做其他的题，我就去看了一下。。。先交几发最小生成树WA下，然后就走了 打完比赛dalao们说是斯坦纳树板板。。。行吧（打完比赛太多了，直到现在才有时间，计蒜客也出复现赛了，就去学了一下 先说一下A题题意：先给n个点，点的名字还是英文的，还要记录一下，然后给出m条边。之后给出4行，每行两个点的名字，表示从点A到点B要有连线。如果４个连线有重复的边，只需算一次。问最后所有对连起来所需要的最...