n = int(input())

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

max_points = 0
for i in range(n):
    for j in range(i + 1, n):
        points = 0
        for k in range(n):
            if (y[k] - y[i]) * (x[j] - x[i]) == (y[j] - y[i]) * (x[k] - x[i]):
                points += 1
        if points > max_points:
            max_points = points
print(max_points)