diff --git a/storage/zeta/kt/completed/1092.kt b/storage/zeta/kt/completed/1092.kt
new file mode 100644
index 0000000..d753585
--- /dev/null
+++ b/storage/zeta/kt/completed/1092.kt
@@ -0,0 +1,64 @@
+fun <T : Comparable<T>> List<T>.lowerBound(value: T): Int {
+    var left = 0
+    var right = this.size
+
+    while (left < right) {
+        val mid = (left + right) / 2
+        if (this[mid] < value) {
+            left = mid + 1
+        } else {
+            right = mid
+        }
+    }
+    return left
+}
+
+fun minimumPortTime(weightLimits: List<Int> /* sorted */, weights: List<Int>): Int? {
+
+    val weightsCntCategorized = IntArray(weightLimits.size + 1)
+
+
+    weights.forEach {
+        val cat = weightLimits.lowerBound(it)
+        weightsCntCategorized[cat]++
+    }
+
+    if (weightsCntCategorized.last() > 0) {
+        return null
+    }
+
+    var time = 0
+    while (true) {
+        repeat(weightLimits.size) {
+            for (i in (0..it).reversed()) {
+                if (weightsCntCategorized[i] == 0) {
+                    continue
+                } else {
+                    weightsCntCategorized[i]--
+                    break
+                }
+            }
+        }
+
+        time++
+        if (weightsCntCategorized.all { it == 0 }) {
+            break
+        }
+    }
+
+
+    return time
+}
+
+fun main() = with(System.`in`.bufferedReader()) {
+    this.readLine()
+
+    val weightLimits = this.readLine().split(' ').map { it.toInt() }.sorted()
+    this.readLine()
+
+    val weights = this.readLine().split(' ').map { it.toInt() }
+
+    println(
+        minimumPortTime(weightLimits, weights) ?: -1
+    )
+}
\ No newline at end of file
diff --git a/storage/zeta/kt/completed/23029.kt b/storage/zeta/kt/completed/23029.kt
new file mode 100644
index 0000000..6fdd502
--- /dev/null
+++ b/storage/zeta/kt/completed/23029.kt
@@ -0,0 +1,36 @@
+fun maxFoodEaten(cntsFoods: List<Int>): Int {
+    val dp = Array(cntsFoods.size) { Array<Int>(3) { 0 } }
+
+    // 0: 안먹을경우
+    // 1: 첫번째인경우
+    // 2: 두번째인경우
+
+    for ((i, food) in cntsFoods.withIndex()) {
+        if (i == 0) {
+            dp[i][1] = food
+            dp[i][2] = 0
+            dp[i][0] = 0
+        } else if (i == 1) {
+            dp[i][2] = dp[i - 1][1] + food / 2
+            dp[i][1] = dp[i - 1][0] + food
+            dp[i][0] = dp[i - 1].max()
+        } else {
+            dp[i][0] = dp[i - 1].max()
+            dp[i][1] = dp[i - 1][0] + food
+            dp[i][2] = dp[i - 1][1] + food / 2
+        }
+
+    }
+
+    return dp.last().max()
+}
+
+fun main() = with(System.`in`.bufferedReader()) {
+    val n = this.readLine().toInt()
+    val cntsFoods = (1..n).map {
+        this.readLine().toInt()
+
+    }
+
+    println(maxFoodEaten(cntsFoods))
+}
\ No newline at end of file
diff --git a/storage/zeta/kt/completed/26587.kt b/storage/zeta/kt/completed/26587.kt
new file mode 100644
index 0000000..1473bad
--- /dev/null
+++ b/storage/zeta/kt/completed/26587.kt
@@ -0,0 +1,11 @@
+fun main() = with(System.`in`.bufferedReader()) {
+    this.readLines().map {
+        val words = it.split(' ').toMutableList()
+        val vowelStarts =
+            words.withIndex().filter { it.value.first().lowercaseChar() in listOf('a', 'e', 'i', 'o', 'u') }
+        (vowelStarts zip vowelStarts.reversed()).forEach { (a, b) ->
+            words[a.index] = b.value
+        }
+        words.joinToString(" ")
+    }.forEach(::println)
+}
\ No newline at end of file
diff --git a/storage/zeta/kt/completed/30553.kt b/storage/zeta/kt/completed/30553.kt
new file mode 100644
index 0000000..66d6e43
--- /dev/null
+++ b/storage/zeta/kt/completed/30553.kt
@@ -0,0 +1,47 @@
+fun main() = with(System.`in`.bufferedReader()) {
+    val (n, m, q) = this.readLine()!!.split(' ').map { it.toInt() }
+
+    val characters = (1..n).map { IntArray(m) }
+
+    repeat(n) {
+        val trait = this.readLine()!!
+
+        for (i in 0 until m) {
+            characters[it][i] = when (trait[i]) {
+                'Y' -> 2
+                'N' -> 1
+                else -> 0
+            }
+        }
+    }
+
+    val queries = IntArray(m)
+
+    repeat(q) {
+        val iter = this.readLine()!!.split(' ').iterator()
+        val index = iter.next().toInt() - 1
+        queries[index] = when (iter.next().first()) {
+            'Y' -> 2
+            'N' -> 1
+            else -> 0
+        }
+    }
+
+    val filtered = characters.withIndex().filter { (ind, it) ->
+        (it zip queries).map {
+            if (it.second == 0) {
+                true
+            } else {
+                it.first == it.second
+            }
+        }.all { it }
+    }
+
+    if (filtered.size == 1) {
+        println("unique")
+        println(filtered.first().index + 1)
+    } else {
+        println("ambiguous")
+        println(filtered.size)
+    }
+}
\ No newline at end of file