int main() {
	auto start = std::chrono::high_resolution_clock::now();
	for (int i = 0; i < 100000; i++) {
		fopen("test.txt", "wb");
	}
	auto end = std::chrono::high_resolution_clock::now();

	std::cout << std::chrono::duration<double>(end - start).count() << std::endl;
	return 0;
}