diff --git a/src/main/kotlin/g0201_0300/s0222_count_complete_tree_nodes/Solution.kt b/src/main/kotlin/g0201_0300/s0222_count_complete_tree_nodes/Solution.kt
index 4e2e9d8e..fbce10ee 100644
--- a/src/main/kotlin/g0201_0300/s0222_count_complete_tree_nodes/Solution.kt
+++ b/src/main/kotlin/g0201_0300/s0222_count_complete_tree_nodes/Solution.kt
@@ -1,5 +1,8 @@
 package g0201_0300.s0222_count_complete_tree_nodes
 
+// #Easy #Depth_First_Search #Tree #Binary_Search #Binary_Tree #Binary_Search_II_Day_10
+// #Top_Interview_150_Binary_Tree_General #2025_02_08_Time_0_(100.00%)_Space_41.04_(43.09%)
+
 import com_github_leetcode.TreeNode
 
 /*
diff --git a/src/test/kotlin/g3401_3500/s3436_find_valid_emails/MysqlTest.kt b/src/test/kotlin/g3401_3500/s3436_find_valid_emails/MysqlTest.kt
index 9f676ecb..86de7025 100644
--- a/src/test/kotlin/g3401_3500/s3436_find_valid_emails/MysqlTest.kt
+++ b/src/test/kotlin/g3401_3500/s3436_find_valid_emails/MysqlTest.kt
@@ -48,19 +48,19 @@ internal class MysqlTest {
                         .collect(Collectors.joining("\n"))
                         .replace("#.*?\\r?\\n".toRegex(), ""),
                 ).use { resultSet ->
-                    MatcherAssert.assertThat<Boolean?>(resultSet.next(), CoreMatchers.equalTo<Boolean?>(true))
-                    MatcherAssert.assertThat<Int?>(resultSet.getInt(1), CoreMatchers.equalTo<Int?>(1))
-                    MatcherAssert.assertThat<String?>(
+                    MatcherAssert.assertThat<Boolean>(resultSet.next(), CoreMatchers.equalTo<Boolean>(true))
+                    MatcherAssert.assertThat<Int>(resultSet.getInt(1), CoreMatchers.equalTo<Int>(1))
+                    MatcherAssert.assertThat<String>(
                         resultSet.getNString(2),
-                        CoreMatchers.equalTo<String?>("alice@example.com"),
+                        CoreMatchers.equalTo<String>("alice@example.com"),
                     )
-                    MatcherAssert.assertThat<Boolean?>(resultSet.next(), CoreMatchers.equalTo<Boolean?>(true))
-                    MatcherAssert.assertThat<Int?>(resultSet.getInt(1), CoreMatchers.equalTo<Int?>(4))
-                    MatcherAssert.assertThat<String?>(
+                    MatcherAssert.assertThat<Boolean>(resultSet.next(), CoreMatchers.equalTo<Boolean>(true))
+                    MatcherAssert.assertThat<Int>(resultSet.getInt(1), CoreMatchers.equalTo<Int>(4))
+                    MatcherAssert.assertThat<String>(
                         resultSet.getNString(2),
-                        CoreMatchers.equalTo<String?>("david@domain.com"),
+                        CoreMatchers.equalTo<String>("david@domain.com"),
                     )
-                    MatcherAssert.assertThat<Boolean?>(resultSet.next(), CoreMatchers.equalTo<Boolean?>(false))
+                    MatcherAssert.assertThat<Boolean>(resultSet.next(), CoreMatchers.equalTo<Boolean>(false))
                 }
             }
         }