diff -r 49d4fe04fbc0 -r 58243a389464 src/hugo/max_flow.h
--- a/src/hugo/max_flow.h	Thu Aug 05 11:41:36 2004 +0000
+++ b/src/hugo/max_flow.h	Tue Aug 17 10:24:19 2004 +0000
@@ -344,16 +344,18 @@
     }
 
 
-    /// Returns the maximum value of a flow.
+    /// Returns the value of the maximum flow.
 
-    /// Returns the maximum value of a flow, by counting the 
-    /// over-flow of the target node \ref t.
+    /// Returns the excess of the target node \ref t. 
+    /// After running \ref preflowPhase1, this is the value of 
+    /// the maximum flow.
     /// It can be called already after running \ref preflowPhase1.
     Num flowValue() const {
-      Num a=0;
-      for(InEdgeIt e(*g,t);g->valid(e);g->next(e)) a+=(*flow)[e];
-      for(OutEdgeIt e(*g,t);g->valid(e);g->next(e)) a-=(*flow)[e];
-      return a;
+//       Num a=0;
+//       for(InEdgeIt e(*g,t);g->valid(e);g->next(e)) a+=(*flow)[e];
+//       for(OutEdgeIt e(*g,t);g->valid(e);g->next(e)) a-=(*flow)[e];
+//       return a;
+      return excess[t];
       //marci figyu: excess[t] epp ezt adja preflow 1. fazisa utan   
     }