diff --git a/2202/220201.cpp b/2202/220201.cpp
new file mode 100644
index 0000000..5b2a657
--- /dev/null
+++ b/2202/220201.cpp
@@ -0,0 +1,19 @@
+#include <vector>
+#include <cstdio>
+
+class Solution {
+public:
+	static int maxProfit(const std::vector<int>& prices) {
+		int toBuy = 0x7FFFFFFF, ret = 0;
+		for (int price : prices) {
+			ret = std::max(price - toBuy, ret);
+			toBuy = std::min(price, toBuy);
+		}
+		return ret;
+	}
+};
+
+int main() {
+	std::printf("%d\n", Solution::maxProfit({7,6,4,3,1}));
+	return 0;
+}
diff --git a/2202/CMakeLists.txt b/2202/CMakeLists.txt
index 8de4ac6..75b30db 100644
--- a/2202/CMakeLists.txt
+++ b/2202/CMakeLists.txt
@@ -3,4 +3,4 @@ PROJECT(2202)
 
 SET(CMAKE_CXX_STANDARD 23)
 
-ADD_EXECUTABLE(2202 220201-CN.cpp)
+ADD_EXECUTABLE(2202 220201.cpp)