diff --git a/.common/makefile b/.common/makefile
index e17e79c..58c3485 100644
--- a/.common/makefile
+++ b/.common/makefile
@@ -1,8 +1,8 @@
 CXX=clang++
 CXXFLAGS=-std=c++20 -Wall -Wextra
 
-main: format main.cpp
-	$(CXX) $(CXXFLAGS) -g main.cpp -o main
+%: format %.cpp
+	$(CXX) $(CXXFLAGS) -g $^ -o $@
 
 format:
-	clang-format -i -style=google main.cpp
+	clang-format -i -style=google *.cpp