void dfs(vector<vector<int> > &vvi, const int depth, const int n) {
if(depth == n) {
++ans;
return;
}
for(int i = 0; i < n; ++i) {
if(vvi[depth][i])
continue;
setVisited(vvi, depth, i, n, 1);
dfs(vvi, depth+1, n);
setVisited(vvi, depth, i, n, -1);
}
}
/*public*/
void
DirectedEdge::setVisitedEdge(bool newIsVisited)
{
setVisited(newIsVisited);
assert(sym);
sym->setVisited(newIsVisited);
}
void
nsSMILInstanceTime::HandleChangedInterval(
const nsSMILTimeContainer* aSrcContainer,
bool aBeginObjectChanged,
bool aEndObjectChanged)
{
// It's possible a sequence of notifications might cause our base interval to
// be updated and then deleted. Furthermore, the delete might happen whilst
// we're still in the queue to be notified of the change. In any case, if we
// don't have a base interval, just ignore the change.
if (!mBaseInterval)
return;
NS_ABORT_IF_FALSE(mCreator, "Base interval is set but creator is not.");
if (mVisited) {
// Break the cycle here
Unlink();
return;
}
bool objectChanged = mCreator->DependsOnBegin() ? aBeginObjectChanged :
aEndObjectChanged;
mozilla::AutoRestore<bool> setVisited(mVisited);
mVisited = true;
nsRefPtr<nsSMILInstanceTime> deathGrip(this);
mCreator->HandleChangedInstanceTime(*GetBaseTime(), aSrcContainer, *this,
objectChanged);
}
void
nsSMILInstanceTime::HandleChangedInterval(
const nsSMILTimeContainer* aSrcContainer,
PRBool aBeginObjectChanged,
PRBool aEndObjectChanged)
{
NS_ABORT_IF_FALSE(mBaseInterval,
"Got call to HandleChangedInterval on an independent instance time.");
NS_ABORT_IF_FALSE(mCreator, "Base interval is set but creator is not.");
if (mVisited) {
// Break the cycle here
Unlink();
return;
}
PRBool objectChanged = mCreator->DependsOnBegin() ? aBeginObjectChanged :
aEndObjectChanged;
AutoBoolSetter setVisited(mVisited);
nsRefPtr<nsSMILInstanceTime> deathGrip(this);
mCreator->HandleChangedInstanceTime(*GetBaseTime(), aSrcContainer, *this,
objectChanged);
}
void Cell::init(const float pitProbability,int xIn,int yIn) {
setVisited(false); //si lo pones en false el mapa se pone negro y se esconde todo
//setVisited(true);
setBreeze(false);
setStench(false);
setGlitter(false);
setPosition(xIn, yIn);
setPit(pitProbability);
}
ProgramStrings Print::flatten() const
{
if (isVisited()){
return ProgramStrings();
}
setVisited(true);
ProgramStrings prog;
foreach(Sink *sink, sinks()){
Data* sinkData = sink->sourceData();
//ps += sinkData->flatten();
prog = prog + sinkData->flatten();
}
PRBool
nsSMILInstanceTime::IsDependentOn(const nsSMILInstanceTime& aOther) const
{
if (mVisited)
return PR_FALSE;
const nsSMILInstanceTime* myBaseTime = GetBaseTime();
if (!myBaseTime)
return PR_FALSE;
if (myBaseTime == &aOther)
return PR_TRUE;
// mVisited is mutable
AutoBoolSetter setVisited(const_cast<nsSMILInstanceTime*>(this)->mVisited);
return myBaseTime->IsDependentOn(aOther);
}
bool
nsSMILInstanceTime::IsDependentOn(const nsSMILInstanceTime& aOther) const
{
if (mVisited)
return false;
const nsSMILInstanceTime* myBaseTime = GetBaseTime();
if (!myBaseTime)
return false;
if (myBaseTime == &aOther)
return true;
mozilla::AutoRestore<bool> setVisited(mVisited);
mVisited = true;
return myBaseTime->IsDependentOn(aOther);
}
bool
nsSMILInstanceTime::IsDependentOn(const nsSMILInstanceTime& aOther) const
{
if (mVisited)
return false;
const nsSMILInstanceTime* myBaseTime = GetBaseTime();
if (!myBaseTime)
return false;
if (myBaseTime == &aOther)
return true;
// mVisited is mutable
mozilla::AutoRestore<bool> setVisited(const_cast<nsSMILInstanceTime*>(this)->mVisited);
const_cast<nsSMILInstanceTime*>(this)->mVisited = true;
return myBaseTime->IsDependentOn(aOther);
}
/* u and v are the number of vertices in sets U, and V, respectively,
* filling up bipgraph[0..u-1][0..v-1].
* result:
* matching[u0]==v0 iff u0 and v0 are in the matching,
* otherwise matching[u0] = -1 */
void
match(int u, int v) {
int i,j, head,tail, bad, last, increased;
for( i = 0; i < u; i++ ) {
matching[i] = -1;
flagUmatched[i] = 0;
}
for( i = 0; i < v; i++ ) flagVmatched[i] = 0;
do { /* find alternating paths by repeated bfs. */
for( i = 0; i < MAXU+MAXV; i++ ) predecessor[i] = -1;
for( i = 0; i < MAXU; i++ ) flagUused[i] = flagUvisited[i] = 0;
for( i = 0; i < MAXV; i++ ) flagVused[i] = flagVvisited[i] = 0;
head = tail = 0;
/* put all the unmatched u's on the queue. They start the
* alternating path. */
for( i = 0; i < u; i++ ) {
if( ! isMatched(U(i))) {
queue[tail++] = U(i);
predecessor[i] = -1; /* redundant statement */
setVisited(U(i));
}
}
/* flag that at least one path was found by the bfs.
* when the bfs does not find an alternating path we are done. */
increased = 0;
while( head != tail ) {
i = queue[head++];
/* this node appeared on some previously found alternating path. */
if( isUsed(i) ) continue;
if( isV(i) && !isMatched(i) ) {
/* we got to the end of an alternating path. see if
* it is disjoint with other paths found so far. only
* then can we mess it up a bit. */
bad = 0;
for( j = i; j != -1; j = predecessor[j]) {
if( isUsed(j)) {
bad = 1;
break;
}
}
if( ! bad ) {
/* this path is pristine. switch "polarity" of edges
* in the matching on this path. */
/* flag and instrumention - whether (not) to quit,
* and how many paths we found this bfs. */
increased++;
for( j = i; j != -1; last = j, j = predecessor[j] ) {
if( isV(j) && !isMatched(j)) {
/* the only unmatched v - actually this means we
* are on the first iteration of this loop. */
setMatched(j);
} else if( isU(j) ) {
if( isMatched(j) ) {
/* the node we saw in the previous iteration of
* this loop must be a V. We will match with it
* instead of the one we used to match with, which
* must be the next node visited in this loop. */
assert(isV(last));
matching[j] = last - MAXU;
} else {
/* we are the very first u, one of the ones the
* bfs queue was "seeded" with. We should have ...*/
assert(predecessor[j] == -1);
setMatched(j);
assert(isV(last));
matching[j] = last - MAXU;
}
}
setUsed(j); /* this node cannot be used for other
* paths we might run across in the future
* on this bfs. */
} /* for */
} /* if ! bad */
} /* isV and !isMatched */
else if( isV(i) ) {
/* this must be a matched V - find the matching U and put it on
* the queue if it is not visited or used. */
bad = 1;
for( j = 0; j < u; j++ ) {
if( isMatched(U(j)) && matching[j] == i - MAXU ) {
/* this is the one. */
if( ! isVisited(U(j)) && !isUsed(U(j))) {
setVisited(U(j));
queue[tail++] = U(j);
predecessor[U(j)] = i;
}
bad = 0;
break;
}
}
assert(!bad);
} /* isV */
else if( isU(i) ) {
/* we are at U. whether it is unmatched (a "seed"),
* or matched, we do the same thing - put on the queue
* all V's which it is connected to in the graph but
* which it is _not_ paired to in the current matching. */
for( j = 0; j < v; j++ ) {
if( bipgraph[i][j] &&
!isVisited(V(j)) &&
!isUsed(V(j)) &&
matching[i] != j ) {
/* we can put this one on the queue. */
queue[tail++] = V(j);
predecessor[V(j)] = i;
setVisited(V(j));
}
}
} else {
assert(0); /* should be no other cases. */
}
/* this is the end of the bfs. */
}
} while( increased );
return;
}
int main(int argc, char** argv){
//Reads in file containing weighted graph
char string[15];
printf("Enter file name: ");
scanf("%s", &string);
//Scans file and error checks existence of input file
FILE* input = fopen(string, "r");
if(input == NULL){
printf("File not found\n");
return 1;
}
//Scans first line to determine type of graph
char type[10];
fscanf(input, "%s", type);
//Scans second line of file to find the number of vertices
int vertices;
fscanf(input, "%d", &vertices);
//creates array of linked lists
List* list[vertices];
int i;
for(i=0; i<vertices; i++){
list[i] = NULL;
}
//scans file and places information into linked lists
char buffer[MAX_LINE_SIZE];
char* token;
while(fgets(buffer, MAX_LINE_SIZE, input))
{
//Error checking
if(buffer[strlen(buffer)-1] == '\n')
buffer[strlen(buffer)-1] = '\0';
//Skips tabs, new lines, and spaces
token = strtok(buffer, " \n\r\t");
//Places destinations into correct vertices
int vertex, destination, weight;
while(token != NULL)
{
sscanf(token, "(%d,%d,%d)", &vertex, &destination, &weight);
list[vertex-1] = createList(list[vertex-1], destination-1, weight);
if(strncmp(type, "UNDIRECTED", 10) == 0){
list[destination - 1] = createList(list[destination-1], vertex-1, weight);
}
token = strtok(NULL, " \n\r\t");
}
}
// Prints adjacency list
printList(list, vertices);
if(strncmp(type, "DIRECTED", 10) == 0){
printf("\nDistances:\n");
dijkstra(vertices, list);
}
else if(strncmp(type, "UNDIRECTED", 10) == 0){
SCC* scc = NULL;
int graphCount =0;
int* visited = malloc(sizeof(int)*vertices);
visited = setVisited(visited, vertices);
for(i=0; i<vertices; i++){
if(visited[i] == 2){
visited = DFS(list, i, vertices);
scc = createVisited(scc, visited);
graphCount++;
}
}
if(graphCount > 1)
printf("The graph as a whole is not strongly connected\n");
else
printf("The graph is strongly connected\n");
//Prints the strongly connected components of the graph
printSCC(scc, vertices);
printf("\n");
if(graphCount == 1)
prim(vertices, list);
free(visited);
}
close(input);
return 0;
}
BMP MazeGen::Generate()
{
// Create a vertex with coordinates within (1, 1) and (Width-1, Height-1),
// and set it's visited member to true.
Vertex current;
current.x = (rand() % (Width / 2)) * 2 + 1;
current.y = (rand() % (Height/ 2)) * 2 + 1;
setVisited(current);
// Push the starting cell to the stack
stk.push(current);
while(!AllCellsVisited())
{
// Get all neighbors of the current cell
std::vector<Vertex> neighbors = GetNeighbors(current);
// Get a random unvisited neighbor of the current cell, or discover that there are no unvisited neighbors
int randomNeighbor = rand() % neighbors.size();
// While neighbors[randomNeighbor] is a cell that has been visited already:
while( getVisited(mazeArray[neighbors[randomNeighbor].x][neighbors[randomNeighbor].y]) == true)
{
// Remove that random neighbor from the vector of neighbors
neighbors.erase(neighbors.begin() + randomNeighbor);
// If there are no neighbors left, break the loop
if(neighbors.empty()) break;
// Pick a new random neighbor
randomNeighbor = rand() % neighbors.size();
}
// If there are no unvisited neighbors of the current cell
if(neighbors.empty())
{
// Go back a step, popping the last cell off the stack and setting it to the current cell,
// then repeating the whole process
current = stk.top();
stk.pop();
}
// If there was an unvisited neighbor of of the current cell
else
{
// Remove the 'wall' between the current cell and it's neighbor, drawing a line between the two cells
RemoveWall(current, neighbors[randomNeighbor]);
// Set the current vertex to the randomly selected neighbor
current = neighbors[randomNeighbor];
// Mark it as visted
setVisited(mazeArray[current.x][current.y]);
// Push it to the stack
stk.push(current);
}
}
return maze;
}
