In this paper, two types of the minimum weight spanning tree with constraints are investigated.
主要研究两类约束最小支撑树问题，即点约束和边约束最小支撑树问题。
Second, a minimum-weight spanning tree of the latter graph is computed.
其次求出后者的最小生成树；
Second, a minimum-weight spanning tree of the latter graph is computed.
其次求出后者的最小生成树；
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