diff --git a/cpp/2204/220416.cpp b/cpp/2204/220416.cpp
index b90a5df..3105e44 100644
--- a/cpp/2204/220416.cpp
+++ b/cpp/2204/220416.cpp
@@ -1,26 +1,26 @@
-#include <functional>
-
-struct TreeNode {
-	int val;
-	TreeNode* left;
-	TreeNode* right;
-	explicit TreeNode(int x, TreeNode* left = nullptr, TreeNode* right = nullptr) : val(x), left(left), right(right) {}
-};
-
-class Solution {
-public:
-	static TreeNode* convertBST(TreeNode* root) {
-		if (!root)
-			return nullptr;
-		int x = 0;
-		std::function<void(TreeNode*)> reversedInOrderTraverse = [&](TreeNode* r) {
-			if (r->right)
-				reversedInOrderTraverse(r->right);
-			r->val = (x += r->val);
-			if (r->left)
-				reversedInOrderTraverse(r->left);
-		};
-		reversedInOrderTraverse(root);
-		return root;
-	}
-};
+#include <functional>
+
+struct TreeNode {
+	int val;
+	TreeNode* left;
+	TreeNode* right;
+	explicit TreeNode(int x, TreeNode* left = nullptr, TreeNode* right = nullptr) : val(x), left(left), right(right) {}
+};
+
+class Solution {
+public:
+	static TreeNode* convertBST(TreeNode* root) {
+		if (!root)
+			return nullptr;
+		int x = 0;
+		std::function<void(TreeNode*)> reversedInOrderTraverse = [&](TreeNode* r) {
+			if (r->right)
+				reversedInOrderTraverse(r->right);
+			r->val = (x += r->val);
+			if (r->left)
+				reversedInOrderTraverse(r->left);
+		};
+		reversedInOrderTraverse(root);
+		return root;
+	}
+};