#include <iostream>
using namespace std;
const int MAXN = (1 << 20) + 9;
int A[MAXN];
int main(int argc, char *argv[]) {
	ios_base::sync_with_stdio(0);
	int n, t;
	cin >> n >> t;
	n = 1 << n;
	for (int i = 0; i < n; ++i)
		cin >> A[i];
	if (t & 1) {
		for (int i = n - 1; i >= 0; --i)
			cout << A[i] << " ";
	}
	else {
		for (int i = 0; i < n; ++i)
			cout << A[i] << " ";
	}
	cout << endl;
	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 27 28 29 30 31 | #include <iostream> using namespace std; const int MAXN = (1 << 20) + 9; int A[MAXN]; int main(int argc, char *argv[]) { ios_base::sync_with_stdio(0); int n, t; cin >> n >> t; n = 1 << n; for (int i = 0; i < n; ++i) cin >> A[i]; if (t & 1) { for (int i = n - 1; i >= 0; --i) cout << A[i] << " "; } else { for (int i = 0; i < n; ++i) cout << A[i] << " "; } cout << endl; return 0; } | 
 
            
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