#include <iostream>
#include <cstdio>
#include <cmath>
using namespace std;
int a[2000000];
int main(){
	int b, c;
	scanf("%d %d", &b, &c);
	b = pow(2, b);
	for (int i = 1; i <= b; i++){
		scanf("%d", &a[i]);
	}
	if (c % 2 == 0)
		for (int i = 1; i <= b; i++){
			printf("%d ", a[i]);
		}
	else
		for (int i = b; i >= 1; i--){
			printf("%d ", a[i]);
		}
	//system("pause");
}
        | 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 | #include <iostream> #include <cstdio> #include <cmath> using namespace std; int a[2000000]; int main(){ int b, c; scanf("%d %d", &b, &c); b = pow(2, b); for (int i = 1; i <= b; i++){ scanf("%d", &a[i]); } if (c % 2 == 0) for (int i = 1; i <= b; i++){ printf("%d ", a[i]); } else for (int i = b; i >= 1; i--){ printf("%d ", a[i]); } //system("pause"); } | 
 
            
         English
                    English