Robot - KOTLIN

// Author : Saurav Kalsoor
// Robot - KOTLIN

import java.util.*

var sc: Scanner = Scanner(System.`in`)

fun main() {
    val n: Int = sc.nextInt()
    val x: Int = sc.nextInt()
    val y: Int = sc.nextInt()
    val arr = ArrayList<Int>()
    for (i in 0 until n) {
        arr.add(sc.nextInt())
    }
    robot(arr, x, y)
}

fun robot(moves: ArrayList<Int>, x: Int, y: Int) {
    val set = HashSet<String>()
    set.add("0 0")
    var x_dir = 0
    var y_dir = 0
    var x_val = 0
    var y_val = 0
    var i = 0
    while (i < moves.size) {
        when (moves[i]) {
            0 -> {
                x_dir = 0
                y_dir = 1
            }
            2 -> {
                x_dir = 0
                y_dir = -1
            }
            1 -> {
                x_dir = 1
                y_dir = 0
            }
            3 -> {
                x_dir = -1
                y_dir = 0
            }
        }
        x_val += x_dir
        y_val += y_dir
        if (set.contains("$x_val $y_val")) {
            i--
        } else {
            set.add("$x_val $y_val")
        }
        i++
    }
    println((x_val + x).toString() + " " + (y_val + y))
}