diff -r 741f3108a90f -r e997802b855c src/work/marci/preflow_bug.cc
--- a/src/work/marci/preflow_bug.cc	Sat Nov 13 12:24:01 2004 +0000
+++ b/src/work/marci/preflow_bug.cc	Sat Nov 13 12:53:28 2004 +0000
@@ -45,7 +45,7 @@
   {
     Graph::EdgeIt e;
     for (g.first(e); g.valid(e); g.next(e))
-      cout << 1+g.id(g.tail(e)) << "->" << 1+g.id(g.head(e)) << " cap: " << cap[e] << " preflow: " << flow[e] << endl;
+      cout << 1+g.id(g.source(e)) << "->" << 1+g.id(g.target(e)) << " cap: " << cap[e] << " preflow: " << flow[e] << endl;
   }
   {
     Graph::NodeIt n;
@@ -75,15 +75,15 @@
     
     Graph::EdgeIt e;
     for (g.first(e); g.valid(e); g.next(e)) {
-      if (cut[g.tail(e)] && !cut[g.head(e)]) {
-	cout << 1+g.id(g.tail(e)) << "->" << 1+g.id(g.head(e)) 
+      if (cut[g.source(e)] && !cut[g.target(e)]) {
+	cout << 1+g.id(g.source(e)) << "->" << 1+g.id(g.target(e)) 
 	     << "(forward edge) flow: " << flow[e] 
 	     << " cap: " << cap[e]<< endl;
 	if (flow[e]!=cap[e]) 
 	std::cout << "Slackness does not hold!" << std::endl;
       }
-      if (!cut[g.tail(e)] && cut[g.head(e)]) {
-	cout << 1+g.id(g.tail(e)) << "->" << 1+g.id(g.head(e)) 
+      if (!cut[g.source(e)] && cut[g.target(e)]) {
+	cout << 1+g.id(g.source(e)) << "->" << 1+g.id(g.target(e)) 
 	     << "(backward edge) flow: " << flow[e] << endl;
 	if (flow[e]!=0) 
 	std::cout << "Slackness does not hold!" << std::endl;
@@ -105,9 +105,9 @@
 //     max_flow_test.actMinCut(cut);
 
 //     FOR_EACH_LOC(Graph::EdgeIt, e, g) {
-//       if (cut[g.tail(e)] && !cut[g.head(e)] && !flow[e]==cap[e]) 
+//       if (cut[g.source(e)] && !cut[g.target(e)] && !flow[e]==cap[e]) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
-//       if (!cut[g.tail(e)] && cut[g.head(e)] && flow[e]>0) 
+//       if (!cut[g.source(e)] && cut[g.target(e)] && flow[e]>0) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
 //     }
 //   }
@@ -121,9 +121,9 @@
 //     std::cout << "flow value: "<< max_flow_test.flowValue() << std::endl;
 
 //     FOR_EACH_LOC(Graph::EdgeIt, e, g) {
-//       if (cut[g.tail(e)] && !cut[g.head(e)] && !flow[e]==cap[e]) 
+//       if (cut[g.source(e)] && !cut[g.target(e)] && !flow[e]==cap[e]) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
-//       if (!cut[g.tail(e)] && cut[g.head(e)] && flow[e]>0) 
+//       if (!cut[g.source(e)] && cut[g.target(e)] && flow[e]>0) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
 //     }
 //   }
@@ -148,9 +148,9 @@
 //     std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
 
 //     FOR_EACH_LOC(Graph::EdgeIt, e, g) {
-//       if (cut[g.tail(e)] && !cut[g.head(e)] && !flow[e]==cap[e]) 
+//       if (cut[g.source(e)] && !cut[g.target(e)] && !flow[e]==cap[e]) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
-//       if (!cut[g.tail(e)] && cut[g.head(e)] && flow[e]>0) 
+//       if (!cut[g.source(e)] && cut[g.target(e)] && flow[e]>0) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
 //     }
 //   }
@@ -177,9 +177,9 @@
 //     std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
 
 //     FOR_EACH_LOC(Graph::EdgeIt, e, g) {
-//       if (cut[g.tail(e)] && !cut[g.head(e)] && !flow[e]==cap[e]) 
+//       if (cut[g.source(e)] && !cut[g.target(e)] && !flow[e]==cap[e]) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
-//       if (!cut[g.tail(e)] && cut[g.head(e)] && flow[e]>0) 
+//       if (!cut[g.source(e)] && cut[g.target(e)] && flow[e]>0) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
 //     }
 //   }
@@ -195,9 +195,9 @@
 //     std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
 
 //     FOR_EACH_LOC(Graph::EdgeIt, e, g) {
-//       if (cut[g.tail(e)] && !cut[g.head(e)] && !flow[e]==cap[e]) 
+//       if (cut[g.source(e)] && !cut[g.target(e)] && !flow[e]==cap[e]) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
-//       if (!cut[g.tail(e)] && cut[g.head(e)] && flow[e]>0) 
+//       if (!cut[g.source(e)] && cut[g.target(e)] && flow[e]>0) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
 //     }
 //   }
@@ -213,9 +213,9 @@
 //     std::cout << "flow value: "<< augmenting_flow_test.flowValue() << std::endl;
 
 //     FOR_EACH_LOC(Graph::EdgeIt, e, g) {
-//       if (cut[g.tail(e)] && !cut[g.head(e)] && !flow[e]==cap[e]) 
+//       if (cut[g.source(e)] && !cut[g.target(e)] && !flow[e]==cap[e]) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
-//       if (!cut[g.tail(e)] && cut[g.head(e)] && flow[e]>0) 
+//       if (!cut[g.source(e)] && cut[g.target(e)] && flow[e]>0) 
 // 	std::cout << "Slackness does not hold!" << std::endl;
 //     }
 //   }