N = int(input())
point_list = [list(map(int, input().split())) for i in range(N)]

max_count = 0
for i in range(N):
    for j in range(i + 1, N):
        a = 0
        if point_list[j][0] - point_list[i][0] != 0:
            a = (point_list[j][1] - point_list[i][1]) / (point_list[j][0] - point_list[i][0])
        count = 0
        for k in range(N):
            if point_list[j][0] - point_list[i][0] != 0:
                if a * (point_list[k][0] - point_list[i][0]) + point_list[i][1] == point_list[k][1]:
                    count += 1
            else:
                if (point_list[k][0] - point_list[i][0]) == 0:
                    count += 1
        if max_count < count:
            max_count = count

print(max_count)