diff --git a/cpp/2203/220302.cpp b/cpp/2203/220302.cpp
new file mode 100644
index 0000000..5ad7c87
--- /dev/null
+++ b/cpp/2203/220302.cpp
@@ -0,0 +1,17 @@
+#include <string>
+
+class Solution {
+public:
+	static bool isSubsequence(const std::string& t, const std::string& s) {
+		int m = s.length(), n = t.length(), i = 0, j = 0;
+		while (i < m && j < n) {
+			if (s[i++] == t[j])
+				++j;
+		}
+		return j == n;
+	}
+};
+
+int main() {
+	return 0;
+}
diff --git a/cpp/2203/CMakeLists.txt b/cpp/2203/CMakeLists.txt
index 71f8484..d8a769f 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 220302-CN.cpp)
+ADD_EXECUTABLE(2203 220302.cpp)