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这道题朴素Prim就OK

Posted by openthedoor at 2008-10-05 20:14:04 on Problem 3625 
看了board被吓到了，自己写先试了下Kruskal 超时，换成prim + heap[STL]也超，最后换成朴素Prim居然过掉，汗！难不成那个快排和heap都要手动？
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