#include <cstdio>
int t[1<<20], n, m;
int main() {
	scanf("%d%d", &n, &m);
	n = 1 << n;
	for (int i = 0; i < n; i++) {
		scanf("%d", t+i);
	}
	if (m&1) {
		for (int i = n-1; i >= 0; i--) {
			printf("%d ", t[i]);
		}
	} else {
		for (int i = 0; i < n; i++) {
			printf("%d ", t[i]);
		}
	}
	printf("\n");
}
        | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | #include <cstdio> int t[1<<20], n, m; int main() { scanf("%d%d", &n, &m); n = 1 << n; for (int i = 0; i < n; i++) { scanf("%d", t+i); } if (m&1) { for (int i = n-1; i >= 0; i--) { printf("%d ", t[i]); } } else { for (int i = 0; i < n; i++) { printf("%d ", t[i]); } } printf("\n"); } | 
 
            
         English
                    English