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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/list_update_policy/sample_update_policy.hpp
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+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// is hereby granted without fee, provided that the above copyright
+// notice appears in all copies, and that both that copyright notice
+// and this permission notice appear in supporting documentation. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file sample_update_policy.hpp
+ * Contains a sample policy for list update containers.
+ */
+
+#ifndef PB_DS_SAMPLE_UPDATE_POLICY_HPP
+#define PB_DS_SAMPLE_UPDATE_POLICY_HPP
+
+namespace __gnu_pbds
+{
+  /// A sample list-update policy.
+  struct sample_update_policy
+  {
+    /// Default constructor.
+    sample_update_policy();
+
+    /// Copy constructor.
+    sample_update_policy(const sample_update_policy&);
+
+    /// Swaps content.
+    inline void
+    swap(sample_update_policy& other);
+
+  protected:
+    /// Metadata on which this functor operates.
+    typedef some_metadata_type metadata_type;
+
+    /// Creates a metadata object.
+    metadata_type
+    operator()() const;
+
+    /// Decides whether a metadata object should be moved to the front
+    /// of the list. A list-update based containers object will call
+    /// this method to decide whether to move a node to the front of
+    /// the list. The method shoule return true if the node should be
+    /// moved to the front of the list.
+    bool
+    operator()(metadata_reference) const;
+  };
+}
+#endif