diff --git a/03-a.kts b/03-a.kts
deleted file mode 100644
index 8451fe7..0000000
--- a/03-a.kts
+++ /dev/null
@@ -1,13 +0,0 @@
-import java.util.Scanner
-import java.util.regex.Pattern
-
-val pattern: Pattern = Pattern.compile("mul\\([0-9]+,[0-9]+\\)")
-val scanner = Scanner(System.`in`)
-
-var sum = 0
-while (true) {
-    val next: String = scanner.findWithinHorizon(pattern, 0) ?: break
-
-    sum += next.replace("mul(", "").replace(")", "").split(",").map { it.toInt() }.let { (a, b) -> a*b }
-}
-println(sum)
\ No newline at end of file
diff --git a/03-b.kts b/03-b.kts
deleted file mode 100644
index ff03734..0000000
--- a/03-b.kts
+++ /dev/null
@@ -1,21 +0,0 @@
-import java.util.Scanner
-import java.util.regex.Pattern
-
-val pattern: Pattern = Pattern.compile("mul\\([0-9]+,[0-9]+\\)|do\\(\\)|don't\\(\\)")
-
-val scanner = Scanner(System.`in`)
-
-var sum = 0
-var enabled = true
-while (true) {
-    val next: String = scanner.findWithinHorizon(pattern, 0) ?: break
-
-    when (next) {
-        "do()" -> enabled = true
-        "don't()" -> enabled = false
-        else -> if (enabled) {
-            sum += next.replace("mul(", "").replace(")", "").split(",").map { it.toInt() }.let { (a, b) -> a*b }
-        }
-    }
-}
-println(sum)
\ No newline at end of file
diff --git a/04-a.kts b/04-a.kts
deleted file mode 100644
index 672ec67..0000000
--- a/04-a.kts
+++ /dev/null
@@ -1,59 +0,0 @@
-import java.util.Scanner
-
-val scanner = Scanner(System.`in`)
-
-val matrix = ArrayList<CharArray>()
-
-while (scanner.hasNextLine()) {
-    val line = scanner.nextLine()
-    matrix.add(line.toCharArray())
-}
-
-var count = 0
-
-matrix.forEachIndexed { row, line ->
-    line.forEachIndexed { col, char ->
-        count += searchFrom(matrix, row, col)
-    }
-}
-println(count)
-
-fun searchFrom(matrix: ArrayList<CharArray>, row: Int, col: Int): Int {
-    return (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row, col + 1, 'M')
-        && safeCheckMatrix(matrix, row, col + 2, 'A')
-        && safeCheckMatrix(matrix, row, col + 3, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row, col - 1, 'M')
-        && safeCheckMatrix(matrix, row, col - 2, 'A')
-        && safeCheckMatrix(matrix, row, col - 3, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row + 1, col + 1, 'M')
-        && safeCheckMatrix(matrix, row + 2, col + 2, 'A')
-        && safeCheckMatrix(matrix, row + 3, col + 3, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row + 1, col, 'M')
-        && safeCheckMatrix(matrix, row + 2, col, 'A')
-        && safeCheckMatrix(matrix, row + 3, col, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row + 1, col - 1, 'M')
-        && safeCheckMatrix(matrix, row + 2, col - 2, 'A')
-        && safeCheckMatrix(matrix, row + 3, col - 3, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row - 1, col + 1, 'M')
-        && safeCheckMatrix(matrix, row - 2, col + 2, 'A')
-        && safeCheckMatrix(matrix, row - 3, col + 3, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row - 1, col, 'M')
-        && safeCheckMatrix(matrix, row - 2, col, 'A')
-        && safeCheckMatrix(matrix, row - 3, col, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'X')
-        && safeCheckMatrix(matrix, row - 1, col - 1, 'M')
-        && safeCheckMatrix(matrix, row - 2, col - 2, 'A')
-        && safeCheckMatrix(matrix, row - 3, col - 3, 'S')
-    ) 1 else 0)
-}
-
-fun safeCheckMatrix(matrix: ArrayList<CharArray>, row: Int, col: Int, target: Char): Boolean {
-    return row in matrix.indices && col in matrix[row].indices && matrix[row][col] == target
-}
\ No newline at end of file
diff --git a/04-b.kts b/04-b.kts
deleted file mode 100644
index a8cfe20..0000000
--- a/04-b.kts
+++ /dev/null
@@ -1,47 +0,0 @@
-import java.util.*
-
-val scanner = Scanner(System.`in`)
-
-val matrix = ArrayList<CharArray>()
-
-while (scanner.hasNextLine()) {
-    val line = scanner.nextLine()
-    matrix.add(line.toCharArray())
-}
-
-var count = 0
-
-matrix.forEachIndexed { row, line ->
-    line.forEachIndexed { col, char ->
-        count += searchFrom(matrix, row, col)
-    }
-}
-println(count)
-
-fun searchFrom(matrix: ArrayList<CharArray>, row: Int, col: Int): Int {
-    return (if (safeCheckMatrix(matrix, row, col, 'A') &&
-        safeCheckMatrix(matrix, row - 1, col - 1, 'M') &&
-        safeCheckMatrix(matrix, row - 1, col + 1, 'M') &&
-        safeCheckMatrix(matrix, row + 1, col - 1, 'S') &&
-        safeCheckMatrix(matrix, row + 1, col + 1, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'A') &&
-        safeCheckMatrix(matrix, row + 1, col - 1, 'M') &&
-        safeCheckMatrix(matrix, row + 1, col + 1, 'M') &&
-        safeCheckMatrix(matrix, row - 1, col - 1, 'S') &&
-        safeCheckMatrix(matrix, row - 1, col + 1, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'A') &&
-        safeCheckMatrix(matrix, row - 1, col - 1, 'M') &&
-        safeCheckMatrix(matrix, row + 1, col - 1, 'M') &&
-        safeCheckMatrix(matrix, row - 1, col + 1, 'S') &&
-        safeCheckMatrix(matrix, row + 1, col + 1, 'S')
-    ) 1 else 0) + (if (safeCheckMatrix(matrix, row, col, 'A') &&
-        safeCheckMatrix(matrix, row - 1, col + 1, 'M') &&
-        safeCheckMatrix(matrix, row + 1, col + 1, 'M') &&
-        safeCheckMatrix(matrix, row - 1, col - 1, 'S') &&
-        safeCheckMatrix(matrix, row + 1, col - 1, 'S')
-    ) 1 else 0)
-}
-
-fun safeCheckMatrix(matrix: ArrayList<CharArray>, row: Int, col: Int, target: Char): Boolean {
-    return row in matrix.indices && col in matrix[row].indices && matrix[row][col] == target
-}
\ No newline at end of file
diff --git a/05-a.kts b/05-a.kts
deleted file mode 100644
index 8c88f89..0000000
--- a/05-a.kts
+++ /dev/null
@@ -1,39 +0,0 @@
-import java.util.Scanner
-
-val scanner = Scanner(System.`in`)
-
-val rules = HashMap<Int, MutableSet<Int>>()
-
-while (scanner.hasNextLine()) {
-    val line = scanner.nextLine()
-    if (line == "") {
-        break;
-    }
-
-    val (before, after) = line.split("|").map(String::toInt)
-    if (!rules.contains(before)) {
-        rules[before] = HashSet<Int>()
-    }
-    rules[before]!!.add(after)
-}
-
-var sum = 0
-while (scanner.hasNextLine()) {
-    val line = scanner.nextLine()
-    val pages = line.split(",").map(String::toInt)
-
-    val result = pages.fold(Pair(HashSet<Int>(), true)) { (appeared, isSafe), page ->
-        val shouldBeAfter = rules[page]?.toSet() ?: emptySet()
-        val violateRule = appeared.intersect(shouldBeAfter)
-        val stillSafe = isSafe && violateRule.isEmpty()
-
-        appeared.add(page)
-        Pair(appeared, stillSafe)
-    }
-
-    if (result.second) {
-        val pagesArray = pages.toIntArray()
-        sum += pagesArray[pagesArray.size / 2]
-    }
-}
-println(sum)
\ No newline at end of file
diff --git a/05-b.kts b/05-b.kts
deleted file mode 100644
index 34e2db2..0000000
--- a/05-b.kts
+++ /dev/null
@@ -1,31 +0,0 @@
-import java.util.Scanner
-
-val scanner = Scanner(System.`in`)
-
-val rules = HashMap<Int, MutableSet<Int>>()
-
-while (scanner.hasNextLine()) {
-    val line = scanner.nextLine()
-    if (line == "") {
-        break;
-    }
-
-    val (before, after) = line.split("|").map(String::toInt)
-    if (!rules.contains(before)) {
-        rules[before] = HashSet<Int>()
-    }
-    rules[before]!!.add(after)
-}
-
-var sum = 0
-while (scanner.hasNextLine()) {
-    val line = scanner.nextLine()
-    val pages = line.split(",").map(String::toInt)
-    val fixed = pages.sortedWith { l, r -> if (l == r) 0 else if (rules[l]?.contains(r) == true) -1 else 1 }
-
-    if ("$pages" != "$fixed") {
-        val fixedArray = fixed.toIntArray()
-        sum += fixedArray[fixedArray.size / 2]
-    }
-}
-println(sum)
\ No newline at end of file