n = int(input())
XY = []
for i in range(n):
    x, y = map(int, input().split())
    XY.append((x, y))

ans = 0
for i in range(n-1):
    x1, y1 = XY[i]
    for j in range(i+1, n):
        x2, y2 = XY[j]
        temp = 2
        if x1 != x2:
            for k in range(n):
                if k == i or k == j:
                    continue
                x3, y3 = XY[k]
                if (y2-y1)*x3-(x2-x1)*y3-x1*y2+x2*y1 == 0:
                    temp += 1
        else:
            for k in range(n):
                if k == i or k == j:
                    continue
                x3, y3 = XY[k]
                if x3 == x1:
                    temp += 1
        ans = max(ans, temp)
print(ans)