#include <bits/stdc++.h>
#define MAX 1100007
#define LL long long
using namespace std;
int n,t;
LL sum;
int k[MAX];
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
    cin>>n>>t;
    n = 1<<n;
    for (int i=0; i<n; ++i)
    {
        cin>>k[i];
    }
    if (t%2)
    {
        for (int i=(n-1); i>=0; --i)
        {
            cout<<k[i]<<" ";
        }
    }
    else
    {
         for (int i=0; i<n; ++i)
        {
            cout<<k[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> #define MAX 1100007 #define LL long long using namespace std; int n,t; LL sum; int k[MAX]; int main() { ios_base::sync_with_stdio(0); cin.tie(0); cin>>n>>t; n = 1<<n; for (int i=0; i<n; ++i) { cin>>k[i]; } if (t%2) { for (int i=(n-1); i>=0; --i) { cout<<k[i]<<" "; } } else { for (int i=0; i<n; ++i) { cout<<k[i]<<" "; } } return 0; } | 
 
            
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