From fdab6e3f90209ce026160717cc783784a11f125a Mon Sep 17 00:00:00 2001
From: Francois Fleuret <francois@fleuret.org>
Date: Mon, 20 Aug 2012 16:55:55 -0700
Subject: [PATCH] Update.

---
 miniksp.cc | 31 ++++++++++++++++++++++++-------
 1 file changed, 24 insertions(+), 7 deletions(-)

diff --git a/miniksp.cc b/miniksp.cc
index c6e8354..360289f 100644
--- a/miniksp.cc
+++ b/miniksp.cc
@@ -56,6 +56,7 @@ void find_shortest(int nb_vertices,
 
   for(int e = 0; e < nb_edges; e++) {
     pred[e] = -1;
+    ASSERT(se[e] >= 0);
   }
 
   int nb_changes;
@@ -83,13 +84,21 @@ void find_best_paths(int nb_vertices,
 
   raise_es(nb_edges, es);
 
+  scalar_t s;
   do {
-    find_shortest(nb_vertices, nb_edges, es, ea, eb, source, sink, dist, pred);
+    find_shortest(nb_vertices, nb_edges, es, ea, eb, source, sink, pred, dist);
     add_dpsi_es(nb_edges, es, ea, eb, dist);
-    for(int v = 0; v < nb_edges; v++) {
-      
+    s = 0.0;
+    for(int e = 0; e < nb_edges; e++) {
+      if(pred[eb[e]] == ea[e]) {
+        s += es[e];
+        int k = eb[e];
+        eb[e] = ea[e];
+        ea[e] = k;
+        es[e] = - es[e];
+      }
     }
-  } while();
+  } while(s < 0);
 
   delete[] dist;
   delete[] pred;
@@ -97,9 +106,17 @@ void find_best_paths(int nb_vertices,
 
 int main(int argc, char **argv) {
   int nb_time_steps = 4;
-  int nb_locations = 10;
-  int nb_neighbors = 3;
+  int nb_locations = 5;
   // Add the source and sink
   int nb_vertices = nb_time_steps * nb_locations + 2;
-  int nb_edges = nb_locations + (nb_time_steps - 1) * nb_locations 
+  int nb_edges = nb_locations + (nb_time_steps - 1) * nb_locations * nb_locations + nb_locations;
+  int source = 0;
+  int sink = nb_locations - 1;
+  scalar_t *es = new scalar_t[nb_edges];
+  int *ea = new int[nb_edges];
+  int *eb = new int[nb_edges];
+
+  delete[] es;
+  delete[] ea;
+  delete[] eb;
 }
-- 
2.20.1