1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
#include <cstdio>
#include <cmath>
using namespace std;
int tab[1100000];
int main(){
	int t, n, power;
	scanf("%d %d",&n,&t);
	power = pow(2,n);
	for (int i=0;i<power;i++){
		scanf("%d",&tab[i]);
	}
	if (t%2 == 0){
		for (int i=0;i<power;i++){
			printf("%d ",tab[i]);
		}
	}
	else {
		for (int i=power-1;i>=0;i--){
			printf("%d ",tab[i]);
		}
	}
}