n = int(input())
x = [0] * n
y = [0] * n
for i in range(n):
    x[i], y[i] = map(int, input().split())
ans = 0
for i in range(n):
    for j in range(i + 1, n):
        res = 1
        for k in range(n):
            if i != k and (x[i] - x[k]) * (y[i] - y[j]) == (y[i] - y[k]) * (x[i] - x[j]):
                res += 1
        ans = max(ans, res)
print(ans)