#include <iostream>
#include <vector>
using namespace std;
int main()
{
	ios::sync_with_stdio(false);
	int n, t;
	vector<int> result;
	cin >> n >> t;
	n = 1 << n;
	result.resize(n);
	for(int i = 0; i < n; ++i)
	{
		cin >> result[i];
	}
	if(t % 2 == 0)
	{
		for(auto x : result)
		{
			cout << x << ' ';
		}
	}
	else
	{
		for (auto it = result.rbegin(); it != result.rend(); ++it)
		{
			cout << *it << ' ';
		}
	}
	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 32 33 34 35 36 37 38 | #include <iostream> #include <vector> using namespace std; int main() { ios::sync_with_stdio(false); int n, t; vector<int> result; cin >> n >> t; n = 1 << n; result.resize(n); for(int i = 0; i < n; ++i) { cin >> result[i]; } if(t % 2 == 0) { for(auto x : result) { cout << x << ' '; } } else { for (auto it = result.rbegin(); it != result.rend(); ++it) { cout << *it << ' '; } } return 0; } | 
 
            
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