90分，求救！！！

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define endl '\n'
int a[2050][2050];
signed main () {
	ios :: sync_with_stdio (false);
	cin.tie (0);
	cout.tie (0);
	int n;
	cin >> n;
	a[1][1] = 0;
	a[1][2] = 1;
	a[2][1] = 1;
	a[2][2] = 1;
	int bc;
	for (int i = 2; i <= n; i++) {
		bc = 2;
		for (int j = 2; j < i; j++) {
			bc *= 2;
		}
		for (int m = 1; m <= bc; m++) {
			for (int n = 1; n <= bc; n++) {
				a[m][n + bc] = a[m][n];
				a[m + bc][n] = a[m][n];
				a[m + bc][n + bc] = a[m][n];
			}
		}
		for (int m = 1; m <= bc; m++) {
			for (int n = 1; n <= bc; n++) {
				a[m][n] = 0;
			}
		}
	}
	for (int i = 1; i <= bc * 2; i++) {
		for (int j = 1; j <= bc * 2; j++) {
			cout << a[i][j] << " ";
		}
		cout << endl;
	}
	return 0;
}