r924:a80381c43760
Mon, 28 Feb 2011 10:19:34
[Not Reviewed]
0 comments (0 inline)
0
2
0
| ... | ... |
@@ -543,9 +543,6 @@ |
| 543 | 543 |
if ((*_level)[u] == _level->maxLevel()) continue; |
| 544 | 544 |
_flow->set(e, (*_capacity)[e]); |
| 545 | 545 |
(*_excess)[u] += rem; |
| 546 |
if (u != _target && !_level->active(u)) {
|
|
| 547 |
_level->activate(u); |
|
| 548 |
} |
|
| 549 | 546 |
} |
| 550 | 547 |
} |
| 551 | 548 |
for (InArcIt e(_graph, _source); e != INVALID; ++e) {
|
| ... | ... |
@@ -555,11 +552,12 @@ |
| 555 | 552 |
if ((*_level)[v] == _level->maxLevel()) continue; |
| 556 | 553 |
_flow->set(e, 0); |
| 557 | 554 |
(*_excess)[v] += rem; |
| 558 |
if (v != _target && !_level->active(v)) {
|
|
| 559 |
_level->activate(v); |
|
| 560 |
} |
|
| 561 | 555 |
} |
| 562 | 556 |
} |
| 557 |
for (NodeIt n(_graph); n != INVALID; ++n) |
|
| 558 |
if(n!=_source && n!=_target && _tolerance.positive((*_excess)[n])) |
|
| 559 |
_level->activate(n); |
|
| 560 |
|
|
| 563 | 561 |
return true; |
| 564 | 562 |
} |
| 565 | 563 |
| ... | ... |
@@ -156,6 +156,30 @@ |
| 156 | 156 |
return true; |
| 157 | 157 |
} |
| 158 | 158 |
|
| 159 |
void initFlowTest() |
|
| 160 |
{
|
|
| 161 |
DIGRAPH_TYPEDEFS(SmartDigraph); |
|
| 162 |
|
|
| 163 |
SmartDigraph g; |
|
| 164 |
SmartDigraph::ArcMap<int> cap(g),iflow(g); |
|
| 165 |
Node s=g.addNode(); Node t=g.addNode(); |
|
| 166 |
Node n1=g.addNode(); Node n2=g.addNode(); |
|
| 167 |
Arc a; |
|
| 168 |
a=g.addArc(s,n1); cap[a]=20; iflow[a]=20; |
|
| 169 |
a=g.addArc(n1,n2); cap[a]=10; iflow[a]=0; |
|
| 170 |
a=g.addArc(n2,t); cap[a]=20; iflow[a]=0; |
|
| 171 |
|
|
| 172 |
Preflow<SmartDigraph> pre(g,cap,s,t); |
|
| 173 |
pre.init(iflow); |
|
| 174 |
pre.startFirstPhase(); |
|
| 175 |
check(pre.flowValue() == 10, "The incorrect max flow value."); |
|
| 176 |
check(pre.minCut(s), "Wrong min cut (Node s)."); |
|
| 177 |
check(pre.minCut(n1), "Wrong min cut (Node n1)."); |
|
| 178 |
check(!pre.minCut(n2), "Wrong min cut (Node n2)."); |
|
| 179 |
check(!pre.minCut(t), "Wrong min cut (Node t)."); |
|
| 180 |
} |
|
| 181 |
|
|
| 182 |
|
|
| 159 | 183 |
int main() {
|
| 160 | 184 |
|
| 161 | 185 |
typedef SmartDigraph Digraph; |
| ... | ... |
@@ -246,5 +270,7 @@ |
| 246 | 270 |
check(preflow_test.flowValue() == min_cut_value, |
| 247 | 271 |
"The max flow value or the three min cut values are incorrect."); |
| 248 | 272 |
|
| 273 |
initFlowTest(); |
|
| 274 |
|
|
| 249 | 275 |
return 0; |
| 250 | 276 |
} |
0 comments (0 inline)