Fraktaali

#include <iostream>
#include <vector>

unsigned int n;

std::vector<std::vector<bool>> fraktaali(unsigned int maara);
void kaanna(std::vector<std::vector<bool>> & lista);

int main() {
	std::cin >> n;

	std::vector<std::vector<bool>> lista = fraktaali(n);


	for (auto& l : lista) {
		for (bool b : l)
			std::cout << (b ? '.' : '#');
		
		std::cout << std::endl;
	}
}

std::vector<std::vector<bool>> fraktaali(unsigned int maara) {
	if (maara == 1)
		return std::vector<std::vector<bool>>(1, std::vector<bool>(true));
	else {
		std::vector<
			std::vector<
			std::vector<bool>>> fraktaalit;

		for (int i = 0; i < 4; ++i) 
			fraktaalit.emplace_back(fraktaali(maara-1));

		kaanna(fraktaalit.at(3));

		std::vector<std::vector<bool>> valmis;
		unsigned int koko = fraktaalit.at(0).size();

		for (size_t f = 0; f < 4; f+=2) {
			for (size_t rivi = 0; rivi < koko; ++rivi) {
				valmis.emplace_back(fraktaalit.at(f).at(rivi));
				valmis.back().insert(
					valmis.back().end(),
					fraktaalit.at(f+1).at(rivi).begin(), 
					fraktaalit.at(f+1).at(rivi).end());
			}
		}

		return valmis;
	}
}

void kaanna(std::vector<std::vector<bool>> & lista) {
	for (size_t x = 0; x < lista.size(); ++x)
		lista.at(x).flip();
}

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