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diff --git a/src/graphcoloring/levels/valueloader.hpp b/src/graphcoloring/levels/valueloader.hpp
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+++ b/src/graphcoloring/levels/valueloader.hpp
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+////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2018 Leo Tenenbaum
+// This file is part of GraphColoring.
+//
+// GraphColoring 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 of the License, or
+// (at your option) any later version.
+//
+// GraphColoring 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.
+//
+// You should have received a copy of the GNU General Public License
+// along with GraphColoring.  If not, see <https://www.gnu.org/licenses/>.
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef GRAPHCOLORING_LEVELS_VALUELOADER_H_
+#define GRAPHCOLORING_LEVELS_VALUELOADER_H_
+
+#include "value.hpp"
+
+#include "graphloader.hpp"
+
+namespace graphcoloring {
+
+class ValueLoader {
+public:
+	ValueLoader();
+	virtual ~ValueLoader() {}
+	void LoadDocument(const pugi::xml_document& document);
+	void LoadGraph(const GraphLoader& graph_loader); // Loads edge & vertex IDs.
+	void LoadColors(const ColorLoader& color_loader); // Loads color names.
+	int VariableValue(const Graph& graph, const std::string& name) const;
+	int Points(const Graph& graph) const;
+	int ObjectivePoints(const Graph& graph) const;
+private:
+	void AddNode(pugi::xml_node node);
+	std::map<std::string, Value> variables;
+	int objective_points;
+};
+
+} // namespace graphcoloring
+
+#endif // GRAPHCOLORING_LEVELS_VALUELOADER_H_