diff --git a/cpp-dsn2pcb/c_pcb_dsn.cpp b/cpp-dsn2pcb/c_pcb_dsn.cpp
index 65aa5e1..c15409c 100644
--- a/cpp-dsn2pcb/c_pcb_dsn.cpp
+++ b/cpp-dsn2pcb/c_pcb_dsn.cpp
@@ -774,30 +774,30 @@ int main(int argc, char *argv[])
 
 	//output pcb format
 	auto border = double(arg_b);
-	std::cout << "(" << maxx - minx + border * 2
-	 			<< " " << maxy - miny + border * 2
-				<< " " << num_layers << ")\n";
+	std::cout << "[" << maxx - minx + border * 2
+				<< "," << maxy - miny + border * 2
+				<< "," << num_layers << "]\n";
 	minx -= border;
 	miny -= border;
 	for (auto &&track : the_tracks)
 	{
-		std::cout << "(" << track.m_id << " " << track.m_track_radius << " "
-						<< track.m_via_radius << " " << track.m_gap << " (";
+		std::cout << "[" << track.m_id << "," << track.m_track_radius << ","
+						<< track.m_via_radius << "," << track.m_gap << ",[";
 		for (auto i = 0; i < static_cast<int>(track.m_pads.size()); ++i)
 		{
 			auto &&term = track.m_pads[i];
-			std::cout << "(" << term.m_radius << " " << term.m_gap
-				<< " (" << term.m_pos.m_x - minx
-				<< " " << term.m_pos.m_y - miny
-				<< " " << term.m_pos.m_z << ") (";
+			std::cout << "(" << term.m_radius << "," << term.m_gap
+				<< ",(" << term.m_pos.m_x - minx
+				<< "," << term.m_pos.m_y - miny
+				<< "," << term.m_pos.m_z << "),(";
 			for (auto j = 0; j < static_cast<int>(term.m_shape.size()); ++j)
 			{
 				auto cord = term.m_shape[j];
-				std::cout << "(" << cord.m_x << " " << cord.m_y << ")";
+				std::cout << "(" << cord.m_x << "," << cord.m_y << ")";
 			}
-			std::cout << "))";
+			std::cout << "])";
 		}
-		std::cout << ") (";
+		std::cout << "],[";
 		for (auto i = 0; i < static_cast<int>(track.m_paths.size()); ++i)
 		{
 			std::cout << "(";
@@ -805,11 +805,11 @@ int main(int argc, char *argv[])
 			for (auto j = 0; j < static_cast<int>(p.size()); ++j)
 			{
 				std::cout << "(" << p[j].m_x - minx
-					<< " " << p[j].m_y - miny
-					<< " " << p[j].m_z << ")";
+					<< "," << p[j].m_y - miny
+					<< "," << p[j].m_z << ")";
 			}
 			std::cout << ")";
 		}
-		std::cout << "))\n";
+		std::cout << "]]\n";
 	}
 }