// 2 * InfL < long.MaxValue, and InfL is a prime number
public static long CalcMaxFlow(int V, int source, int sink, List <GraphEdge> es)
{
var mes = new List <MFEdge> [V];
for (var u = 0; u < V; u++)
{
mes[u] = new List <MFEdge>();
}
foreach (var e in es)
{
var e1 = new MFEdge(e.To, e.Capacity, null);
var e2 = new MFEdge(e.From, 0, e1);
e1.Reverse = e2;
mes[e.From].Add(e1);
mes[e.To].Add(e2);
}
return(MaxFlow(source, sink, mes));
}
public MFEdge(int to, long cap, MFEdge rev)
{
To = to;
Capacity = cap;
Reverse = rev;
}