#include <bits/stdc++.h>
using namespace std;
int main() {
    ios_base::sync_with_stdio(0);
    int n, k;
    cin >> n >> k;
    n = pow(2, n);
    vector<int> a(n);
    for (int i = 0 ; i < n; i++) {
        cin >> a[i];
    }
    if (k % 2) {
        for (int i = n - 1; i >= 0; i--) {
            cout << a[i] << " ";
        }
    }
    else {
        for (int i = 0; i < n; i++) {
            cout << a[i] << " ";
        }
    }
    return 0;
}
        | 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 | #include <bits/stdc++.h> using namespace std; int main() { ios_base::sync_with_stdio(0); int n, k; cin >> n >> k; n = pow(2, n); vector<int> a(n); for (int i = 0 ; i < n; i++) { cin >> a[i]; } if (k % 2) { for (int i = n - 1; i >= 0; i--) { cout << a[i] << " "; } } else { for (int i = 0; i < n; i++) { cout << a[i] << " "; } } return 0; } | 
 
            
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