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strcomb.cpp
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/* SAS modified this file. */
/* (C) Copyright 2003 Jens Lysgaard. All rights reserved. */
/* OSI Certified Open Source Software */
/* This software is licensed under the Common Public License Version 1.0 */
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>
#include "memmod.h"
#include "basegrph.h"
#include "strngcmp.h"
#include "sort.h"
#include "blocks.h"
#include "cutbase.h"
#include "cnstrmgr.h"
#include "grsearch.h"
#include "twomatch.h"
void STRCOMB_ComputeBoundaryLHS(ReachPtr SupportPtr,
int NoOfCustomers,
double **XMatrix,
int NoOfTeeth,
int *IntList,
int IntListSize,
int *ExtList,
int ExtListSize,
double *LHS)
{
int i,j,k,t;
int MinIdx,MaxIdx;
char **InTooth;
*LHS = 0.0;
InTooth = MemGetCM(NoOfCustomers+2,NoOfTeeth+1);
for (i=1; i<=NoOfCustomers+1; i++)
for (t=0; t<=NoOfTeeth; t++) /* Handle = tooth nr. 0 */
InTooth[i][t] = 0;
for (i=1; i<=IntListSize; i++)
{
j = IntList[i];
InTooth[j][0] = 1;
}
for (t=1; t<=NoOfTeeth; t++)
{
MinIdx = ExtList[t];
if (t == NoOfTeeth)
MaxIdx = ExtListSize;
else
MaxIdx = ExtList[t+1] - 1;
for (i=MinIdx; i<=MaxIdx; i++)
{
j = ExtList[i];
InTooth[j][t] = 1;
}
}
for (i=1; i<=NoOfCustomers; i++)
{
for (j=1; j<=SupportPtr->LP[i].CFN; j++)
{
k = SupportPtr->LP[i].FAL[j];
if (k > i)
{
for (t=0; t<=NoOfTeeth; t++)
{
if ((InTooth[i][t]) != (InTooth[k][t]))
(*LHS) += XMatrix[i][k];
}
}
}
}
MemFreeCM(InTooth,NoOfCustomers+2);
}
void STRCOMB_ComputeStrCombRHS(int NoOfCustomers,
int NoOfTeeth,
int *Demand,
int CAP,
int *IntList,
int IntListSize,
int *ExtList,
int ExtListSize,
int *RHS)
{
char DepotInTooth;
int i,j,t;
int MinIdx,MaxIdx;
int TotalDemand;
int *Q, *QCalc, *QCap, *QK;
char **InTooth;
Q = MemGetIV(4);
QCalc = MemGetIV(4);
QCap = MemGetIV(4);
QK = MemGetIV(4);
InTooth = MemGetCM(NoOfCustomers+2,NoOfTeeth+1);
for (i=1; i<=NoOfCustomers+1; i++)
for (t=0; t<=NoOfTeeth; t++) /* Handle = tooth nr. 0 */
InTooth[i][t] = 0;
for (i=1; i<=IntListSize; i++)
{
j = IntList[i];
InTooth[j][0] = 1;
}
for (t=1; t<=NoOfTeeth; t++)
{
MinIdx = ExtList[t];
if (t == NoOfTeeth)
MaxIdx = ExtListSize;
else
MaxIdx = ExtList[t+1] - 1;
for (i=MinIdx; i<=MaxIdx; i++)
{
j = ExtList[i];
InTooth[j][t] = 1;
}
}
TotalDemand = 0;
for (i=1; i<=NoOfCustomers; i++) TotalDemand += Demand[i];
*RHS = 0;
for (t=1; t<=NoOfTeeth; t++)
{
DepotInTooth = InTooth[NoOfCustomers+1][t];
for (i=1; i<=3; i++) Q[i] = 0;
for (i=1; i<=NoOfCustomers; i++)
{
if (InTooth[i][t])
{ /* Node i is in the tooth */
if (InTooth[i][0])
{
/* Node i is in the handle */
Q[1] += Demand[i];
}
else
{
/* Node i is not in the handle */
Q[2] += Demand[i];
}
Q[3] += Demand[i];
}
}
for (i=1; i<=3; i++)
QCalc[i] = Q[i];
if (DepotInTooth)
{
QCalc[2] = TotalDemand - Q[2];
QCalc[3] = TotalDemand - Q[3];
}
for (i=1; i<=3; i++)
{
QCap[i] = CAP;
QK[i] = 1;
while (QCap[i] < QCalc[i])
{
QCap[i] += CAP;
(QK[i])++;
}
}
(*RHS) += (QK[1] + QK[2] + QK[3]);
}
MemFree(Q);
MemFree(QCalc);
MemFree(QCap);
MemFree(QK);
MemFreeCM(InTooth,NoOfCustomers+2);
}
void STRCOMB_ExpandTooth(ReachPtr SupportPtr,
int NoOfCustomers,
int NoOfTeeth,
int ThisToothNr,
int *Demand,
int CAP,
double *NodeBoundary,
char *InHandle,
char **InTooth,
double **XMatrix,
ReachPtr ToothRPtr,
int *ParamBestList,
int *ParamBestListSize,
double *LHS,
int *RHS)
{
char DepotInTooth,ExpandTooth;
char TeethIntersect,IntersectionInHandle;
int i,j,k,t;
int TotalDemand;
int NodeListSize,BestNodeListSize,InitNodeListSize,BestNode,BestXNode;
int Stage,BestStage = 0;
double XVal,BestX,ToothDelta,Slack,BestSlack;
double NewToothDelta,NewSlack,NewBestSlack;
char *Reached, *Selectable, *InSet;
char *TouchedTooth;
int *Q, *QCalc, *QCap, *QK;
int *NewQ, *NewQCalc, *NewQCap, *NewQK;
int *NodeStage, *NodeList;
double *XValue;
Q = MemGetIV(4);
QCalc = MemGetIV(4);
QCap = MemGetIV(4);
QK = MemGetIV(4);
NewQ = MemGetIV(4);
NewQCalc = MemGetIV(4);
NewQCap = MemGetIV(4);
NewQK = MemGetIV(4);
TouchedTooth = MemGetCV(NoOfTeeth+1);
NodeList = MemGetIV(NoOfCustomers+2);
NodeStage = MemGetIV(NoOfCustomers+2);
InSet = MemGetCV(NoOfCustomers+2);
Reached = MemGetCV(NoOfCustomers+1);
Selectable = MemGetCV(NoOfCustomers+2);
XValue = MemGetDV(NoOfCustomers+1);
Selectable[NoOfCustomers+1] = 0;
for (i=1; i<=NoOfCustomers; i++) Selectable[i] = 1;
Stage=ToothRPtr->LP[ThisToothNr].CFN; /* Initial size of the tooth */
for (i=1; i<=NoOfCustomers+1; i++) NodeStage[i] = NoOfCustomers+2;
for (i=1; i<=NoOfCustomers+1; i++) InSet[i] = InTooth[i][ThisToothNr];
for (j=1; j<=ToothRPtr->LP[ThisToothNr].CFN; j++)
{
k = ToothRPtr->LP[ThisToothNr].FAL[j];
NodeStage[k] = Stage;
Selectable[k] = 0;
}
for (t=1; t<=NoOfTeeth; t++) TouchedTooth[t] = 0;
TouchedTooth[ThisToothNr] = 1;
for (t=1; t<=NoOfTeeth; t++)
{
if (t == ThisToothNr) continue;
TeethIntersect=0;
for (j=1; j<=ToothRPtr->LP[t].CFN; j++)
{
k = ToothRPtr->LP[t].FAL[j];
if (NodeStage[k] <= Stage) /* Intersection with current tooth */
{
TeethIntersect=1;
IntersectionInHandle = InHandle[k];
TouchedTooth[t] = 1;
break;
}
}
if (TeethIntersect)
{
for (j=1; j<=ToothRPtr->LP[t].CFN; j++)
{
k = ToothRPtr->LP[t].FAL[j];
if (InHandle[k] != IntersectionInHandle)
Selectable[k] = 0;
}
}
/* If we don't permit intersection inside the handle */
for (j=1; j<=ToothRPtr->LP[t].CFN; j++)
{
k = ToothRPtr->LP[t].FAL[j];
if (InHandle[k])
Selectable[k] = 0;
}
}
/* OK: Now we don't get teeth that intersect both inside and */
/* outside the handle. */
for (i=1; i<=NoOfCustomers; i++) Reached[i] = 0;
for (i=1; i<=NoOfCustomers; i++) XValue[i] = 0.0;
DepotInTooth = InSet[NoOfCustomers+1];
ToothDelta = 0.0;
for (i=1; i<=NoOfCustomers; i++)
{
for (j=1; j<=SupportPtr->LP[i].CFN; j++)
{
k = SupportPtr->LP[i].FAL[j];
if (k > i)
{
XVal = XMatrix[i][k];
if ((InSet[i]) && (k <= NoOfCustomers))
{
XValue[k] += XVal;
Reached[k] = 1;
}
if (InSet[k])
XValue[i] += XVal;
if ((InSet[k]) && (k <= NoOfCustomers))
Reached[i] = 1;
if (InSet[i] != InSet[k])
{
ToothDelta += XVal;
}
}
}
}
for (i=1; i<=3; i++) Q[i] = 0;
TotalDemand = 0;
for (i=1; i<=NoOfCustomers; i++)
{
TotalDemand += Demand[i];
if (InSet[i])
{ /* Node i is in the tooth */
if (InHandle[i])
{
/* Node i is in the handle */
Q[1] += Demand[i];
}
else
{
/* Node i is not in the handle */
Q[2] += Demand[i];
}
Q[3] += Demand[i];
}
}
for (i=1; i<=3; i++)
QCalc[i] = Q[i];
if (DepotInTooth)
{ /* The depot is outside the handle */
QCalc[2] = TotalDemand - Q[2];
QCalc[3] = TotalDemand - Q[3];
}
for (i=1; i<=3; i++)
{
QCap[i] = CAP;
QK[i] = 1;
while (QCap[i] < QCalc[i])
{
QCap[i] += CAP;
(QK[i])++;
}
}
*LHS = ToothDelta;
*RHS = QK[1] + QK[2] + QK[3];
Slack = *LHS - *RHS;
NodeListSize = 0;
for (i=1; i<=NoOfCustomers+1; i++)
if (InSet[i])
{
NodeList[++NodeListSize] = i;
}
InitNodeListSize = NodeListSize;
BestNodeListSize = NodeListSize;
BestSlack = Slack;
ExpandTooth = 1;
while (ExpandTooth)
{
/* Add the customer with max x-value */
BestX = -1.0;
BestNode = 0;
BestXNode = 0;
NewBestSlack = 2.0 * (NoOfCustomers + 2);
for (i=1; i<=NoOfCustomers; i++)
{
if (Selectable[i] == 0) continue;
if (Reached[i] == 0) continue;
if (XValue[i] > BestX)
{
BestX = XValue[i];
BestXNode = i;
}
/* Calculate best slack */
for (j=1; j<=3; j++) NewQ[j] = Q[j];
if (InHandle[i])
NewQ[1] += Demand[i];
else
NewQ[2] += Demand[i];
NewQ[3] += Demand[i];
for (j=1; j<=3; j++)
{
NewQCalc[j] = NewQ[j];
NewQCap[j] = QCap[j];
NewQK[j] = QK[j];
}
if (DepotInTooth)
{
NewQCalc[2] = TotalDemand - NewQ[2];
NewQCalc[3] = TotalDemand - NewQ[3];
}
for (j=1; j<=3; j++)
{
while (NewQCap[j] < NewQCalc[j])
{
NewQCap[j] += CAP;
(NewQK[j])++;
}
while ((NewQCap[j] - CAP) >= NewQCalc[j])
{
NewQCap[j] -= CAP;
(NewQK[j])--;
}
}
NewToothDelta = ToothDelta + (NodeBoundary[i] - (2.0 * XValue[i]));
NewSlack = NewToothDelta - (NewQK[1] + NewQK[2] + NewQK[3]);
if (NewSlack < (NewBestSlack - 0.001))
{
NewBestSlack = NewSlack;
BestNode = i;
}
}
if (BestNode == 0)
{
BestNode = BestXNode;
}
if (BestNode > 0)
{
BestX = XValue[BestNode];
/* Include BestNode */
InSet[BestNode] = 1;
Selectable[BestNode] = 0;
NodeList[++NodeListSize] = BestNode;
NodeStage[BestNode] = ++BestStage;
if (InHandle[BestNode])
{
/* Node BestNode is in the handle */
Q[1] += Demand[BestNode];
}
else
{
/* Node BestNode is not in the handle */
Q[2] += Demand[BestNode];
}
Q[3] += Demand[BestNode];
for (i=1; i<=3; i++) QCalc[i] = Q[i];
if (DepotInTooth)
{
QCalc[2] = TotalDemand - Q[2];
QCalc[3] = TotalDemand - Q[3];
}
for (i=1; i<=3; i++)
{
while (QCap[i] < QCalc[i])
{
QCap[i] += CAP;
(QK[i])++;
}
while ((QCap[i] - CAP) >= QCalc[i])
{
QCap[i] -= CAP;
(QK[i])--;
}
}
ToothDelta += (NodeBoundary[BestNode] - (2.0 * BestX));
Slack = ToothDelta - (QK[1] + QK[2] + QK[3]);
if ((Slack < (BestSlack - 0.001)) || ((*RHS % 2) == 0))
if ((QK[1] + QK[2] + QK[3]) % 2 == 1) /* Odd sum */
{
BestNodeListSize = NodeListSize;
BestSlack = Slack;
*LHS = ToothDelta;
*RHS = QK[1] + QK[2] + QK[3];
}
for (j=1; j<=SupportPtr->LP[BestNode].CFN; j++)
{
k = SupportPtr->LP[BestNode].FAL[j];
if (k <= NoOfCustomers)
{
XVal = XMatrix[BestNode][k];
XValue[k] += XVal;
Reached[k] = 1;
}
}
/* Identify new non-selectable nodes */
for (t=1; t<=NoOfTeeth; t++)
{
if (t == ThisToothNr) continue;
if (InTooth[BestNode][t] == 0) continue;
if (TouchedTooth[t] == 1) continue;
/* We already have a node from tooth t in ThisTooth */
IntersectionInHandle = InHandle[BestNode];
for (j=1; j<=ToothRPtr->LP[t].CFN; j++)
{
k = ToothRPtr->LP[t].FAL[j];
if (InHandle[k] != IntersectionInHandle)
{
Selectable[k] = 0;
}
}
TouchedTooth[t] = 1;
}
}
if (BestNode == 0) break;
}
*ParamBestListSize = BestNodeListSize;
for (i=1; i<=BestNodeListSize; i++)
ParamBestList[i] = NodeList[i];
MemFree(Reached);
MemFree(Selectable);
MemFree(InSet);
MemFree(TouchedTooth);
MemFree(Q);
MemFree(QCalc);
MemFree(QCap);
MemFree(QK);
MemFree(NewQ);
MemFree(NewQCalc);
MemFree(NewQCap);
MemFree(NewQK);
MemFree(NodeStage);
MemFree(NodeList);
MemFree(XValue);
}
void STRCOMB_ExpandToothTwoWays(ReachPtr SupportPtr,
int NoOfCustomers,
int NoOfTeeth,
int ThisToothNr,
int *Demand,
int CAP,
double *NodeBoundary,
char *InHandle,
char **InTooth,
double **XMatrix,
ReachPtr ToothRPtr,
double *LHS,
int *RHS)
{
char DepotInTooth,AddDepot;
int LocalRHS;
double LocalLHS;
int i,j,k,t;
int ListSize, BestListSize;
double Slack,BestSlack;
int *List, *BestList;
List = MemGetIV(NoOfCustomers+2);
BestList = MemGetIV(NoOfCustomers+2);
DepotInTooth = InTooth[NoOfCustomers+1][ThisToothNr];
STRCOMB_ExpandTooth(SupportPtr,
NoOfCustomers,
NoOfTeeth,
ThisToothNr,
Demand,
CAP,
NodeBoundary,
InHandle,
InTooth,
XMatrix,
ToothRPtr,
BestList,
&BestListSize,
&LocalLHS,
&LocalRHS);
*LHS = LocalLHS;
*RHS = LocalRHS;
BestSlack = LocalLHS - LocalRHS;
if (DepotInTooth == 0)
{
/* Try with the depot inside the tooth */
/* Check if it is valid to add the depot to this tooth */
AddDepot = 1;
for (t=1; t<=NoOfTeeth; t++)
{
if (t == ThisToothNr) continue;
if (InTooth[NoOfCustomers+1][t] == 0) continue;
/* The depot is in tooth t */
/* if tooth t intersects with ThisToothNr inside the handle, */
/* then we cannot add the depot to ThisToothNr outside the handle. */
for (j=1; j<=ToothRPtr->LP[t].CFN; j++)
{
k = ToothRPtr->LP[t].FAL[j];
if (InTooth[k][ThisToothNr])
{
AddDepot = 0;
break;
}
}
}
if (AddDepot)
{
InTooth[NoOfCustomers+1][ThisToothNr] = 1;
ListSize = 0;
for (i=1; i<=NoOfCustomers+1; i++)
if (InTooth[i][ThisToothNr]) List[++ListSize] = i;
ReachSetForwList(ToothRPtr,List,ThisToothNr,ListSize);
/* Now including the depot */
STRCOMB_ExpandTooth(SupportPtr,
NoOfCustomers,
NoOfTeeth,
ThisToothNr,
Demand,
CAP,
NodeBoundary,
InHandle,
InTooth,
XMatrix,
ToothRPtr,
List,
&ListSize,
&LocalLHS,
&LocalRHS);
Slack = LocalLHS - LocalRHS;
if ((LocalRHS % 2) == 1)
{
if ((Slack < (BestSlack - 0.01)) || ((*RHS % 2) == 0))
{
BestSlack = Slack;
*LHS = LocalLHS;
*RHS = LocalRHS;
for (i=1; i<=ListSize; i++) BestList[i] = List[i];
BestListSize = ListSize;
}
}
} /* AddDepot */
}
for (i=1; i<=NoOfCustomers+1; i++) InTooth[i][ThisToothNr] = 0;
for (i=1; i<=BestListSize; i++)
{
j = BestList[i];
InTooth[j][ThisToothNr] = 1;
}
ReachSetForwList(ToothRPtr,BestList,ThisToothNr,BestListSize);
MemFree(List);
MemFree(BestList);
}
void STRCOMB_GenerateHandlesV2(ReachPtr SupportPtr,
int NoOfCustomers,
double **XMatrix,
ReachPtr HandlesRPtr,
int MaxNoOfHandles,
int *FoundNoOfHandles)
{
char ListFound;
char TailInBlock,HeadInBlock;
int i,j,k,Idx,EdgeNr,Tail,Head,Label,NodeSum;
int TailComp,HeadComp;
int BlockNr;
int NoOfEdges,NoOfBlocks,NoOfHandles,NodeListSize;
double XVal;
int *EdgeHead, *EdgeTail, *NodeList;
int *Index;
int *NodeLabel;
double *Value;
int *CompNr;
ReachPtr EdgesRPtr, BlocksRPtr;
NoOfHandles=0;
NoOfEdges = 0;
for (i=1; i<NoOfCustomers; i++)
{
for (j=1; j<=SupportPtr->LP[i].CFN; j++)
{
k = SupportPtr->LP[i].FAL[j];
if ((k > NoOfCustomers) || (k < i)) continue;
NoOfEdges++;
}
}
CompNr = MemGetIV(NoOfCustomers+1);
NodeList = MemGetIV(NoOfCustomers+1);
NodeLabel = MemGetIV(NoOfCustomers+1);
EdgeHead = MemGetIV(NoOfEdges+1);
EdgeTail = MemGetIV(NoOfEdges+1);
Index = MemGetIV(NoOfEdges+1);
Value = MemGetDV(NoOfEdges+1);
EdgeNr = 0;
for (i=1; i<NoOfCustomers; i++)
{
for (j=1; j<=SupportPtr->LP[i].CFN; j++)
{
k = SupportPtr->LP[i].FAL[j];
if ((k > NoOfCustomers) || (k < i)) continue;
EdgeNr++;
EdgeTail[EdgeNr] = i;
EdgeHead[EdgeNr] = k;
Index[EdgeNr] = EdgeNr;
XVal = XMatrix[i][k] - 0.5;
if (XVal < 0.0) XVal = -XVal;
Value[EdgeNr] = XVal;
}
}
SortIndexDVInc(Index,Value,NoOfEdges);
ReachInitMem(&EdgesRPtr,NoOfCustomers);
ReachInitMem(&BlocksRPtr,NoOfEdges);
for (i=1; i<=NoOfCustomers; i++) CompNr[i] = i;
/* Components: */
for (Idx=1; Idx<=NoOfEdges; Idx++)
{
if (NoOfHandles >= MaxNoOfHandles)
{
break;
}
EdgeNr = Index[Idx];
Tail = EdgeTail[EdgeNr];
Head = EdgeHead[EdgeNr];
if (CompNr[Tail] != CompNr[Head])
{
/* Merge the two components into one */
/* Move tail to head */
TailComp = CompNr[Tail];
HeadComp = CompNr[Head];
NodeListSize = 0;
for (i=1; i<=NoOfCustomers; i++)
{
if ((CompNr[i] == TailComp) || (CompNr[i] == HeadComp))
{
CompNr[i] = HeadComp;
NodeList[++NodeListSize] = i;
}
}
if (NodeListSize >= 3)
{
NoOfHandles++;
GRSEARCH_AddSet(HandlesRPtr,
NoOfHandles,
NodeListSize,
NodeList,
0);
}
}
}
/* Blocks: */
Label = 0;
for (i=1; i<=NoOfCustomers; i++) NodeLabel[i] = 0;
for (Idx=1; Idx<=NoOfEdges; Idx++)
{
if (NoOfHandles >= MaxNoOfHandles)
{
break;
}
Label++;
EdgeNr = Index[Idx];
Tail = EdgeTail[EdgeNr];
Head = EdgeHead[EdgeNr];
ReachAddForwArc(EdgesRPtr,Tail,Head);
ReachAddForwArc(EdgesRPtr,Head,Tail);
ComputeBlocks(EdgesRPtr,BlocksRPtr,NoOfCustomers,&NoOfBlocks);
for (BlockNr=1; BlockNr<=NoOfBlocks; BlockNr++)
{
if (BlocksRPtr->LP[BlockNr].CFN <= 2) continue;
TailInBlock = 0;
HeadInBlock = 0;
for (j=1; j<=BlocksRPtr->LP[BlockNr].CFN; j++)
{
k = BlocksRPtr->LP[BlockNr].FAL[j];
if (k == Tail) TailInBlock = 1;
if (k == Head) HeadInBlock = 1;
}
if ((TailInBlock) && (HeadInBlock))
{
NodeSum = 0;
NodeListSize = 0;
for (j=1; j<=BlocksRPtr->LP[BlockNr].CFN; j++)
{
k = BlocksRPtr->LP[BlockNr].FAL[j];
NodeList[++NodeListSize] = k;
NodeLabel[k] = Label;
NodeSum += k;
}
GRSEARCH_CheckForExistingSet(HandlesRPtr,
NoOfHandles,
NodeLabel,
Label,
NodeSum,
NodeListSize,
&ListFound);
if (ListFound == 0)
{
NoOfHandles++;
GRSEARCH_AddSet(HandlesRPtr,
NoOfHandles,
NodeListSize,
NodeList,
0);
}
break;
} /* Edge in block */
}
}
*FoundNoOfHandles = NoOfHandles;
MemFree(CompNr);
MemFree(NodeList);
MemFree(NodeLabel);
MemFree(EdgeHead);
MemFree(EdgeTail);
MemFree(Index);
MemFree(Value);
ReachFreeMem(&EdgesRPtr);
ReachFreeMem(&BlocksRPtr);
}
void STRCOMB_Shrink(ReachPtr SupportPtr,
int NoOfCustomers,
int *Demand,
int QMin,
char UseDepotMatch,
double **XMatrix,
int *CompNr, /* Node j is in component nr. CompNr[j]. */
int *CompDemand,
double *CompBoundary,
double **SMatrix,
ReachPtr ResultCompsRPtr,
int *ResultNoOfComponents)
{
char ShrinkAgain;
int i,j,k,Idx;
int NoOfComponents,DepotCompNr;
int CompI,CompJ,CompK;
double XVal,EdgeSum;
char *CVWrk1;
int *IVWrk1, *IVWrk2, *IVWrk3, *IVWrk4;
ReachPtr CmprsEdgesRPtr;
ReachPtr CompsRPtr;
CVWrk1 = MemGetCV(NoOfCustomers+2);
IVWrk1 = MemGetIV(NoOfCustomers+2);
IVWrk2 = MemGetIV(NoOfCustomers+2);
IVWrk3 = MemGetIV(NoOfCustomers+2);
IVWrk4 = MemGetIV(NoOfCustomers+2);
ReachInitMem(&CmprsEdgesRPtr,NoOfCustomers+1);
ReachInitMem(&CompsRPtr,NoOfCustomers+1);
do
{
ShrinkAgain = 0;
ReachClearForwLists(CompsRPtr);
ComputeStrongComponents(CmprsEdgesRPtr,CompsRPtr,
&NoOfComponents,NoOfCustomers+1,
CVWrk1,
IVWrk1,IVWrk2,IVWrk3,IVWrk4);
DepotCompNr = 0;
for (i=1; i<=NoOfComponents; i++)
{
CompDemand[i] = 0;
for (k=1; k<=CompsRPtr->LP[i].CFN; k++)
{
j = CompsRPtr->LP[i].FAL[k];
CompNr[j] = i;
if (j > NoOfCustomers)
DepotCompNr = i;
else
CompDemand[i] += Demand[j];
}
}
for (i=1; i<=NoOfComponents; i++)
for (j=1; j<=NoOfComponents; j++)
SMatrix[i][j] = 0.0;