diff --git a/src/main/kotlin/g3201_3300/s3273_minimum_amount_of_damage_dealt_to_bob/Solution.kt b/src/main/kotlin/g3201_3300/s3273_minimum_amount_of_damage_dealt_to_bob/Solution.kt
index 808784943..e80b0332f 100644
--- a/src/main/kotlin/g3201_3300/s3273_minimum_amount_of_damage_dealt_to_bob/Solution.kt
+++ b/src/main/kotlin/g3201_3300/s3273_minimum_amount_of_damage_dealt_to_bob/Solution.kt
@@ -22,8 +22,8 @@ class Solution {
     }
 
     internal class Pair(var key: Int, var `val`: Int) : Comparable<Pair> {
-        override fun compareTo(p: Pair): Int {
-            return `val` * p.key - key * p.`val`
+        override fun compareTo(other: Pair): Int {
+            return `val` * other.key - key * other.`val`
         }
     }
 }
diff --git a/src/main/kotlin/g3301_3400/s3321_find_x_sum_of_all_k_long_subarrays_ii/Solution.kt b/src/main/kotlin/g3301_3400/s3321_find_x_sum_of_all_k_long_subarrays_ii/Solution.kt
index 3e7687ec0..ea879fdb9 100644
--- a/src/main/kotlin/g3301_3400/s3321_find_x_sum_of_all_k_long_subarrays_ii/Solution.kt
+++ b/src/main/kotlin/g3301_3400/s3321_find_x_sum_of_all_k_long_subarrays_ii/Solution.kt
@@ -16,11 +16,11 @@ class Solution {
             cnt = c
         }
 
-        override fun compareTo(o: RC): Int {
-            if (cnt != o.cnt) {
-                return cnt - o.cnt
+        override fun compareTo(other: RC): Int {
+            if (cnt != other.cnt) {
+                return cnt - other.cnt
             }
-            return `val` - o.`val`
+            return `val` - other.`val`
         }
     }
 
diff --git a/src/main/kotlin/g3301_3400/s3382_maximum_area_rectangle_with_point_constraints_ii/Solution.kt b/src/main/kotlin/g3301_3400/s3382_maximum_area_rectangle_with_point_constraints_ii/Solution.kt
index 9aded6957..76f79ef3c 100644
--- a/src/main/kotlin/g3301_3400/s3382_maximum_area_rectangle_with_point_constraints_ii/Solution.kt
+++ b/src/main/kotlin/g3301_3400/s3382_maximum_area_rectangle_with_point_constraints_ii/Solution.kt
@@ -45,8 +45,8 @@ class Solution {
     }
 
     private class Pair(val x: Int, val y: Int) : Comparable<Pair> {
-        override fun compareTo(p: Pair): Int {
-            return if (x == p.x) y - p.y else x - p.x
+        override fun compareTo(other: Pair): Int {
+            return if (x == other.x) y - other.y else x - other.x
         }
     }
 }
diff --git a/src/test/kotlin/g3301_3400/s3310_remove_methods_from_project/SolutionTest.kt b/src/test/kotlin/g3301_3400/s3310_remove_methods_from_project/SolutionTest.kt
index c426ecc56..da51dcd95 100644
--- a/src/test/kotlin/g3301_3400/s3310_remove_methods_from_project/SolutionTest.kt
+++ b/src/test/kotlin/g3301_3400/s3310_remove_methods_from_project/SolutionTest.kt
@@ -29,7 +29,7 @@ internal class SolutionTest {
     fun remainingMethods3() {
         assertThat<List<Int>>(
             Solution().remainingMethods(3, 2, arrayOf<IntArray>(intArrayOf(1, 2), intArrayOf(0, 1), intArrayOf(2, 0))),
-            equalTo<List<out Any>>(listOf<Any>()),
+            equalTo<List<Int>>(listOf<Int>()),
         )
     }
 }