#include <bits/stdc++.h>
using namespace std;
#define fru(j,n) for(int j=0; j<(n); ++j)
#define tr(it,v) for(auto it=(v).begin(); it!=(v).end(); ++it)
#define x first
#define y second
#define pb push_back
#define ALL(G) (G).begin(),(G).end()
#define DEBUG
#ifdef DEBUG
	#define DEB printf
#else
	#define DEB(...)
#endif
typedef double D;
typedef long long LL;
typedef pair<int,int> pii;
typedef vector<int> vi;
const int mod = 1000000007;
const int MAXN = 1000006;//10^6
int A[1<<20];
int main(){
	 int n,t;
	 scanf("%d%d",&n,&t);
	 n=1<<n;
	 fru(i,n) scanf("%d",&A[i]);
	 fru(i,t%2) reverse(A,A+n);
	 fru(i,n) printf("%d ",A[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 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | #include <bits/stdc++.h> using namespace std; #define fru(j,n) for(int j=0; j<(n); ++j) #define tr(it,v) for(auto it=(v).begin(); it!=(v).end(); ++it) #define x first #define y second #define pb push_back #define ALL(G) (G).begin(),(G).end() #define DEBUG #ifdef DEBUG #define DEB printf #else #define DEB(...) #endif typedef double D; typedef long long LL; typedef pair<int,int> pii; typedef vector<int> vi; const int mod = 1000000007; const int MAXN = 1000006;//10^6 int A[1<<20]; int main(){ int n,t; scanf("%d%d",&n,&t); n=1<<n; fru(i,n) scanf("%d",&A[i]); fru(i,t%2) reverse(A,A+n); fru(i,n) printf("%d ",A[i]); return 0; } | 
 
            
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