n = int(input())


def cross(a, b):
    return a.real * b.imag - b.real * a.imag


XY = []
for _ in range(n):
    x, y = map(int, input().split())
    XY.append((x, y))
ans = 0
for i in range(n - 1):
    a, b = XY[i]
    l1 = complex(a, b)
    for j in range(i + 1, n):
        c, d = XY[j]
        l2 = complex(c, d)
        line = l2 - l1
        cnt = 0
        for k in range(n):
            e, f = XY[k]
            l3 = complex(e, f)
            if cross(l2 - l1, l3 - l1) == 0:
                cnt += 1
        ans = max(ans, cnt)
if n == 2:
    ans = 2
print(ans)