private static ZDDNode MakeChildNode(ZDDNode node, State state, int child_num, PseudoZDD zdd)
{
Mate mate = node.GetCopyMate(state);
int c = mate.CheckTerminalPre(state, child_num);
if (c == 0)
{
return PseudoZDD.ZeroTerminal;
}
else if (c == 1)
{
return PseudoZDD.OneTerminal;
}
mate.Update(state, child_num);
c = mate.CheckTerminalPost(state);
if (c == 0)
{
return PseudoZDD.ZeroTerminal;
}
else if (c == 1)
{
return PseudoZDD.OneTerminal;
}
else
{
return new ZDDNode(mate);
}
}
public static PseudoZDD Construct(State state)
{
PseudoZDD zdd = new PseudoZDD();
zdd.CreateRootNode(state);
for (int edge = 1; edge <= state.GetNumberOfEdges(); ++edge) {
state.Update();
zdd.SetLevelStart();
for (int i = 0; i < zdd.GetCurrentLevelSize(); ++i) {
ZDDNode node = zdd.GetCurrentLevelNode(i);
for (int child_num = 0; child_num < 2; ++child_num) {
ZDDNode child_node = MakeChildNode(node, state, child_num, zdd);
if (child_node != PseudoZDD.ZeroTerminal && child_node != PseudoZDD.OneTerminal) {
ZDDNode cand_node = zdd.FindNodeFromNextLevel(child_node, state);
if (cand_node != null) {
child_node = cand_node;
} else {
child_node.SetNextId();
zdd.AddNodeToNextLevel(child_node, state);
}
}
zdd.SetChildNode(node, child_node, child_num);
}
}
}
return zdd;
}
static void Main(string[] args)
{
Graph graph = new Graph();
// グラフ（隣接リスト）を標準入力から読み込む
string adj_text = "";
string line = Console.ReadLine();
while (line != null)
{
adj_text += line + "\r\n";
line = Console.ReadLine();
}
graph.ParseAdjListText(adj_text);
// state オブジェクトの作成（フロンティア法実行に必要）
StateSimpath state = new StateSimpath(graph);
MateSimpath.SetState(state);
// 入力グラフの頂点の数と辺の数を出力
Console.Error.WriteLine("# of vertices = " + graph.GetNumberOfVertices()
+ ", # of edges = " + graph.GetEdgeList().Count);
PseudoZDD zdd = FrontierAlgorithm.Construct(state); // フロンティア法によるZDD構築
// 作成されたZDDのノード数と解の数を出力
Console.Error.WriteLine("# of nodes of ZDD = " + zdd.GetNumberOfNodes());
Console.Error.WriteLine("# of solutions = " + zdd.GetNumberOfSolutions());
// ZDDを標準出力に出力
Console.Write(zdd.ToString());
}
public static PseudoZDD Construct(State state)
{
PseudoZDD zdd = new PseudoZDD();
zdd.CreateRootNode(state);
for (int edge = 1; edge <= state.GetNumberOfEdges(); ++edge)
{
state.Update();
zdd.SetLevelStart();
for (int i = 0; i < zdd.GetCurrentLevelSize(); ++i)
{
ZDDNode node = zdd.GetCurrentLevelNode(i);
for (int child_num = 0; child_num < 2; ++child_num)
{
ZDDNode child_node = MakeChildNode(node, state, child_num, zdd);
if (child_node != PseudoZDD.ZeroTerminal && child_node != PseudoZDD.OneTerminal)
{
ZDDNode cand_node = zdd.FindNodeFromNextLevel(child_node, state);
if (cand_node != null)
{
child_node = cand_node;
}
else
{
child_node.SetNextId();
zdd.AddNodeToNextLevel(child_node, state);
}
}
zdd.SetChildNode(node, child_node, child_num);
}
}
}
return(zdd);
}
private static ZDDNode MakeChildNode(ZDDNode node, State state, int child_num, PseudoZDD zdd)
{
Mate mate = node.GetCopyMate(state);
int c = mate.CheckTerminalPre(state, child_num);
if (c == 0)
{
return(PseudoZDD.ZeroTerminal);
}
else if (c == 1)
{
return(PseudoZDD.OneTerminal);
}
mate.Update(state, child_num);
c = mate.CheckTerminalPost(state);
if (c == 0)
{
return(PseudoZDD.ZeroTerminal);
}
else if (c == 1)
{
return(PseudoZDD.OneTerminal);
}
else
{
return(new ZDDNode(mate));
}
}
