1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
#include <cstdio>
#include <cmath>

int main()
{
    int n, t;
    scanf("%d %d", &n, &t);
    int len = pow(2, n);
    int *numbers = new int[len];
    for (int i = 0; i < len; ++i)
        scanf("%d", &numbers[i]);

    if (t % 2 == 0) {
        for (int i = 0; i < len; ++i)
            printf("%d ", numbers[i]);
    } else {
        for (int i = len - 1; i >= 0; --i)
            printf("%d ", numbers[i]);
    }
    printf("\n");
    
    delete[] numbers;
    return 0;
}