import java.util.Scanner;
public class tas {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        int iterations = sc.nextInt();
        int nums = powerOfTwo(n);
        int[] numbers = new int[nums];
        for (int i = 0; i < nums; i++) {
            numbers[i] = sc.nextInt();
        }
        if (iterations % 2 == 0) {
            for (int i = 0; i < nums; i++) {
                System.out.print(numbers[i]);
                System.out.print((i < nums - 1) ? " " : "");
            }
        } else {
            for (int i = nums - 1; i >= 0; i--) {
                System.out.print(numbers[i]);
                System.out.print((i > 0) ? " " : "");
            }
        }
    }
    public static int powerOfTwo(int n) {
        return powOfTwo(2, n);
    }
    private static int powOfTwo(int x, int n) {
        if (n == 1) {
            return x;
        } else if (n % 2 == 0) {
            return powOfTwo(x * x, n / 2);
        } else {
            return x * powOfTwo(x * x, n / 2);
        }
    }
}
        | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | import java.util.Scanner; public class tas { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); int iterations = sc.nextInt(); int nums = powerOfTwo(n); int[] numbers = new int[nums]; for (int i = 0; i < nums; i++) { numbers[i] = sc.nextInt(); } if (iterations % 2 == 0) { for (int i = 0; i < nums; i++) { System.out.print(numbers[i]); System.out.print((i < nums - 1) ? " " : ""); } } else { for (int i = nums - 1; i >= 0; i--) { System.out.print(numbers[i]); System.out.print((i > 0) ? " " : ""); } } } public static int powerOfTwo(int n) { return powOfTwo(2, n); } private static int powOfTwo(int x, int n) { if (n == 1) { return x; } else if (n % 2 == 0) { return powOfTwo(x * x, n / 2); } else { return x * powOfTwo(x * x, n / 2); } } } | 
 
            
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