diff --git a/cpp/2203/220305-CN.cpp b/cpp/2203/220305-CN.cpp
new file mode 100644
index 0000000..03666f0
--- /dev/null
+++ b/cpp/2203/220305-CN.cpp
@@ -0,0 +1,15 @@
+#include <string>
+#include <iostream>
+
+class Solution {
+public:
+	// clang does not accept constexpr
+	static inline int findLUSlength(const std::string& a, const std::string& b) {
+		return a == b ? -1 : static_cast<int>(std::max(a.length(), b.length()));
+	}
+};
+
+int main() {
+	std::cout << Solution::findLUSlength("aaa", "bbb");
+	return 0;
+}
diff --git a/cpp/2203/CMakeLists.txt b/cpp/2203/CMakeLists.txt
index c6f0294..5fd9410 100644
--- a/cpp/2203/CMakeLists.txt
+++ b/cpp/2203/CMakeLists.txt
@@ -3,4 +3,4 @@ PROJECT(2203)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2203 220304.cpp)
+ADD_EXECUTABLE(2203 220305-CN.cpp)