X-Git-Url: https://git.llucax.com/z.facultad/75.29/susanita.git/blobdiff_plain/1670f4becf3b3f643d02235972937562c86b9a74..2b522532565096bddb79d9cdc34bb958e0c90797:/src/parser.cpp

diff --git a/src/parser.cpp b/src/parser.cpp
index 4bd29f1..b5fccb4 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -115,3 +115,27 @@ output() const
 	}
 }
 
+/// Hack medio feo para obtener el N del problema
+Susanita::size_type
+Parser::
+get_n(const std::string& filename)
+{
+	std::ifstream f(filename.c_str());
+	if (!f)
+		return 0;
+	std::string l;
+	if (!std::getline(f, l))
+		return 0;
+	std::istringstream ss(strip(l));
+	// descartamos el nombre
+	get_hasta(ss, ':');
+	// contamos personas en la lista
+	Susanita::size_type count = 0;
+	while (ss)
+	{
+		if (!strip(get_hasta(ss, ',')).empty())
+			++count;
+	}
+	return count;
+}
+