# HG changeset patch
# User ladanyi
# Date 1199128881 0
# Node ID 5004899aa8709b6c2c2e7ff06bb2a94e7692a2e1
# Parent  f26368148b9cf6d4a603bc6c1e84ca6416f72294
Include functional because of std::less.

diff -r f26368148b9c -r 5004899aa870 lemon/unionfind.h
--- a/lemon/unionfind.h	Sun Dec 30 18:23:32 2007 +0000
+++ b/lemon/unionfind.h	Mon Dec 31 19:21:21 2007 +0000
@@ -28,6 +28,7 @@
 #include <list>
 #include <utility>
 #include <algorithm>
+#include <functional>
 
 #include <lemon/bits/invalid.h>