N = int(input())
P = [list(map(int,input().split())) for _ in range(N)]
M = 0
for i, (xi, yi) in enumerate(P):
	for j, (xj, yj) in enumerate(P[i + 1:]):
		C = 0
		for xk, yk in P[i + j + 2:]:
			if (xk - xi) * (yj - yi) == (xj - xi) * (yk - yi): C += 1
		if C > M: M = C
print(M + 2)