#include <bits/stdc++.h>
using namespace std;
#define FOR(i,n) for(int i=0; i < int(n); ++i)
#define FO(i,a,b) for(int i=int(a); i<int(b); ++i)
typedef long long ll;
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
#define siz size()*1LL
#define fi first
#define se second
#define ASS assert
#define remin(a,b) a=min(a,b)
#define remax(a,b) a=max(a,b)
#define ALL(c) (c).begin(), (c).end()
#define NL '\n'
int n,t;
int main(){
	ios_base::sync_with_stdio(0);
	
	cin >> n >> t;
	
	int num = 1<<n;
	
	vi data(num);
	
	FOR(i,num){
		cin >> data[i];
	}
	
	if(t%2==0){
		FOR(i,num) cout << data[i] << ' ';
	}
	else{
		FOR(i,num) cout << data[num-1-i] << ' ';
	}
	cout << NL;
	
	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 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | #include <bits/stdc++.h> using namespace std; #define FOR(i,n) for(int i=0; i < int(n); ++i) #define FO(i,a,b) for(int i=int(a); i<int(b); ++i) typedef long long ll; typedef pair<int,int> pii; typedef vector<int> vi; typedef vector<vi> vvi; #define siz size()*1LL #define fi first #define se second #define ASS assert #define remin(a,b) a=min(a,b) #define remax(a,b) a=max(a,b) #define ALL(c) (c).begin(), (c).end() #define NL '\n' int n,t; int main(){ ios_base::sync_with_stdio(0); cin >> n >> t; int num = 1<<n; vi data(num); FOR(i,num){ cin >> data[i]; } if(t%2==0){ FOR(i,num) cout << data[i] << ' '; } else{ FOR(i,num) cout << data[num-1-i] << ' '; } cout << NL; return 0; } | 
 
            
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