diff --git a/cpp/2204/220413-CN.cpp b/cpp/2204/220413-CN.cpp
new file mode 100644
index 0000000..6202926
--- /dev/null
+++ b/cpp/2204/220413-CN.cpp
@@ -0,0 +1,2 @@
+#include <unordered_set>
+#include <unordered_map>
\ No newline at end of file