A polynomial time approximation scheme (PTAS) for this problem is presented.
给出了一个多项式时间近似方案(PTAS)。
Theorem2.1: Algorithm2.1 is a Polynomial time approximation scheme Theorem2.2 When Algorithm2.1 end, the path between each node pairs which.
定理2.1：算法2.1是一个多项式时间近似方案定理2.2程序结束时每个要求所对应的两点之间的路径是唯一的。
Theorem2.1: Algorithm2.1 is a Polynomial time approximation scheme Theorem2.2 When Algorithm2.1 end, the path between each node pairs which.
定理2.1：算法2.1是一个多项式时间近似方案定理2.2程序结束时每个要求所对应的两点之间的路径是唯一的。
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