diff --git a/2201/220117.cpp b/2201/220117.cpp
new file mode 100644
index 0000000..efe220c
--- /dev/null
+++ b/2201/220117.cpp
@@ -0,0 +1,30 @@
+#include <string>
+#include <sstream>
+
+class Solution {
+public:
+	static bool wordPattern(const std::string& pattern, const std::string& s) {
+		std::string mode[26], t;
+		std::stringstream sin(s);
+		for (const auto& i : pattern) {
+			if (!(sin >> t))
+				return false;
+			if (mode[i - 'a'].empty())
+				mode[i - 'a'] = t;
+			if (mode[i - 'a'] != t)
+				return false;
+			int cnt = 0;
+			for (const auto& j : mode) {
+				if (j == t)
+					++cnt;
+			}
+			if (cnt > 1)
+				return false;
+		}
+		return !(sin >> t);
+	}
+};
+
+int main() {
+	return !Solution::wordPattern("abba", "dog cat cat dog");
+}
\ No newline at end of file
diff --git a/2201/CMakeLists.txt b/2201/CMakeLists.txt
index 89bead9..8f9a4a7 100644
--- a/2201/CMakeLists.txt
+++ b/2201/CMakeLists.txt
@@ -3,4 +3,4 @@ PROJECT(2201)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2201 220117-CN.cpp)
\ No newline at end of file
+ADD_EXECUTABLE(2201 220117.cpp)
\ No newline at end of file