restructure zeta/** to storage/zeta/**

storage/zeta/kt/completed/1463.kt

@@ -0,0 +1,24 @@
+fun bfs(N: Int): Int {
+    val D = ArrayDeque<Pair<Int, Int>>()
+    D.addLast(Pair(N, 0))
+
+    while (D.isNotEmpty()) {
+        val (now, step) = D.removeFirst()
+        if (now == 1) {
+            return step
+        }
+        if (now % 3 == 0) {
+            D.addLast(Pair(now / 3, step + 1))
+        }
+        if (now % 2 == 0) {
+            D.addLast(Pair(now / 2, step + 1))
+        }
+        D.addLast(Pair(now - 1, step + 1))
+    }
+    return -1
+}
+
+fun main() {
+    val N = readln().toInt()
+    println(bfs(N));
+}