As we know, now there is efficient algorithms to find the overall min-cut in a directed graph, e.g. Hao and Orlin (1994). + n# `; z. R$ v) n$ {4 h1 r ( t, ]; G! G: M/ f9 f, iNow 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. & X6 L# O: u# i' l" T1 _0 N8 Y8 H7 L3 B& X% \$ y