fun hanoi(disks: Int, src: String, dest: String, aux: String) {
    if (disks > 0) {
        hanoi(disks - 1, src, aux, dest)
        println("Move disk from $src to $dest")
        hanoi(disks - 1, aux, dest, src)
    }
}
fun main() {
    var disks = 3
    println("Using $disks disk/s")
    hanoi(disks, "A", "C", "B")
}