diff --git a/2202/220209-CN.cpp b/2202/220209-CN.cpp
new file mode 100644
index 0000000..92c07ee
--- /dev/null
+++ b/2202/220209-CN.cpp
@@ -0,0 +1,17 @@
+#include <vector>
+
+class Solution {
+public:
+	static int countKDifference(const std::vector<int>& nums, int k) {
+		int ret = 0;
+		for (auto it = nums.begin(); it != nums.end(); ++it)
+			for (auto jt = std::next(it); jt != nums.end(); ++jt)
+				if (std::abs(*it - *jt) == k)
+					++ret;
+		return ret;
+	}
+};
+
+int main() {
+	return 0;
+}
diff --git a/2202/CMakeLists.txt b/2202/CMakeLists.txt
index cdae31b..8f76748 100644
--- a/2202/CMakeLists.txt
+++ b/2202/CMakeLists.txt
@@ -3,4 +3,4 @@ PROJECT(2202)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2202 220209.cpp)
+ADD_EXECUTABLE(2202 220209-CN.cpp)