Fraktaali

#include <bits/stdc++.h>

#define N (1<<19)
#define ll long long
#define ld long double
#define M 1000000007
#define INF 0x5ADFACE5
#define LINF 0x51DEEFFEC7C0DECALL
#define pii pair<int, int>
#define pll pair<long long, long long>
#define F first
#define S second

using namespace std;

char c[1024][1024];

void rev (int x1, int y1, int x2, int y2) {
	for (int y = y1; y <= y2; y++) {
		for (int x = x1; x <= x2; x++) {
			if (c[y][x] == '#') c[y][x] = '.';
			else c[y][x] = '#';
		}
	}
}

void sol (int x1, int y1, int x2, int y2) {
	if (x1 == x2 && y1 == y2) {
		c[y1][x1] = '#';
		return;
	}
	int d = x2 - x1 + 1;
	d /= 2;
	sol(x1, y1, x1 + d - 1, y1 + d - 1);
	sol(x1 + d, y1, x2, y1 + d - 1);
	sol(x1, y1 + d, x1 + d - 1, y2);
	sol(x1 + d, y1 + d, x2, y2);
	rev(x1 + d, y1 + d, x2, y2);
}

int main () {
	int n;
	cin>>n;
	n--;
	sol(0, 0, (1<<n) - 1, (1<<n) - 1);
	for (int y = 0; y < (1<<n); y++) {
		for (int x = 0; x < (1<<n); x++) {
			cout<<c[y][x];
		}
		cout<<endl;
	}
}

Test 1

Group: 1

Verdict: ACCEPTED

Test 2

Group: 2

Verdict: ACCEPTED

Test 3

Group: 3

Verdict: ACCEPTED

Test 4

Group: 4

Verdict: ACCEPTED

Test 5

Group: 5

Verdict: ACCEPTED

Test 6

Group: 6

Verdict: ACCEPTED

Test 7

Group: 7

Verdict: ACCEPTED

Test 8

Group: 8

Verdict: ACCEPTED

Test 9

Group: 9

Verdict: ACCEPTED

Test 10

Group: 10

Verdict: ACCEPTED