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未AC的请进

Posted by OIer_cjf at 2009-01-22 14:34:47 on Problem 1861
题目大意:
给出顶点数,边数,再输入若干条边,求出若干条边满足条件:
1)这几条边中长度最大的长度尽量小;
2)这若干条边可保证图的连通性;
3)在1,2的基础上,求个MST
大致步骤:
1)边按长度排序.
2)把边按长度由小到大依次加进去(要求加入边后不产生环(并查集实现)).
3)输出这个最小生成树的信息.
______________________
从此题可以发现,Prim和Kruscal同样求最小生成树,但是Kruscal求出的生成树满足一个特性:这个生成树的最长边是尽量短的.

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