int square(int x) {
	int y = x;
	/* Update y to equal the result. */
	/* Question: what is the order of magnitude of this algorithm with respect to x? */
	return y * x;
}

int very_slow_square(int x) {
	int y = 0;
	/* Update y to equal the result. */
	/* Question: what is the order of magnitude of this algorithm with respect to x? */
	for (int i = 0; i < x; i++)
		for (int j = 0; j < x; j++)
			y += 1;
	return y;
}

int slow_square(int x) {
	int y = x;
	/* Update y to equal the result. */
	/* Question: what is the order of magnitude of this algorithm with respect to x? */
	for (int i = 0; i < x; i++) y += x;
	return y;
}