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--- ginac-1.5.1.org/ginac/parser/lexer.cpp	2009-03-16 22:04:09.000000000 +0530
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+++ ginac-1.5.1/ginac/parser/lexer.cpp	2009-03-16 22:04:30.000000000 +0530
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@@ -23,6 +23,7 @@
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 #include "lexer.h"
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 #include "compiler.h"
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+#include <cstdio>
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 #include <iostream>
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 #include <sstream>
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 #include <string>