#include <bits/stdc++.h>
using namespace std;
const int N = (1 << 20) + 7;
int n, q;
int tab[N];
int main(){
	scanf("%d %d", &n, &q);
	int p = 1 << n;
	for(int i = 1; i <= p; ++i)
		scanf("%d", &tab[i]);
	
	if(q%2 == 1)
		reverse(tab + 1, tab + p + 1);
	
	for(int i = 1; i <= p; ++i)
		printf("%d ", tab[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 | #include <bits/stdc++.h> using namespace std; const int N = (1 << 20) + 7; int n, q; int tab[N]; int main(){ scanf("%d %d", &n, &q); int p = 1 << n; for(int i = 1; i <= p; ++i) scanf("%d", &tab[i]); if(q%2 == 1) reverse(tab + 1, tab + p + 1); for(int i = 1; i <= p; ++i) printf("%d ", tab[i]); return 0; } | 
 
            
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