求最小生成树
by BMTXLRC @ 2021-03-20 19:31:19
@[_GuGU_](/user/477412)
by BMTXLRC @ 2021-03-20 19:31:48
@[BMTXLRC](/user/380579) 好像懂了，k个棉花糖就是说k个连通分量吧
by _GuGU_ @ 2021-03-20 19:33:53