public int debug(int[] L, int[] R, int m)
{
var n = L.Length;
var src = n + m + 8;
var sink = n + m + 9;
var G = new MinCostFlow(n + m + 10);
for (int i = 1; i <= m; i++)
{
G.AddDirectedEdge(n + i, sink, 1, 0);
}
for (int i = 0; i < n; i++)
{
G.AddDirectedEdge(src, i, 1, 0);
for (int j = 1; j <= L[i]; j++)
{
G.AddDirectedEdge(i, n + j, 1, 0);
}
for (int j = R[i]; j <= m; j++)
{
G.AddDirectedEdge(i, n + j, 1, 0);
}
G.AddDirectedEdge(i, sink, 1, 1);
}
var cost = G.Execute(src, sink);
return(cost.Value);
}
