As we know, now there is efficient algorithms to find the overall min-cut in a directed graph, e.g. Hao and Orlin (1994). ; O7 }' ]6 `$ p$ g0 B0 {. x 8 z" ?: m W9 v8 n: y4 O2 {Now my problem is to find an overall min-cut just separating some given node pairs, not all the node pairs. For example, I have an 8-node digraph with capacities on each arc and want to find the overall min-cut separating some node pairs such as 8 and 1, 6 and 3, 7 and 1. The algorithm of Hao and Orlin (1994) cannot solve my problem. ! l) ^3 h3 [$ h* m4 z
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不好意思,我用英文至少为了把问题说的更清楚一点