diff --git a/cpp/2204/220402-CN.cpp b/cpp/2204/220402-CN.cpp
new file mode 100644
index 0000000..c08a33e
--- /dev/null
+++ b/cpp/2204/220402-CN.cpp
@@ -0,0 +1,7 @@
+#include <algorithm>
+
+/**
+ * 420. Strong Password Checker
+ *
+ * Not implemented, this problem makes no sense.
+ */