public void Solve()
{
var n = sc.Integer();
var g = sc.Integer();
var E = sc.Integer();
var p = sc.Integer(g);
var G = new MaxFlow(n + 1);
for (int i = 0; i < E; i++)
{
var a = sc.Integer();
var b = sc.Integer();
G.AddUndirectedEdge(a, b, 1);
}
foreach (var q in p)
{
G.AddDirectedEdge(q, n, 1);
}
var cost = G.GetMaxFlow(0, n);
IO.Printer.Out.WriteLine(cost);
}
