N = int(input())
xy = [tuple(map(int, input().split())) for i in range(N)]
scores = [2]

for i in range(N-2):
  x_1, y_1 = xy[i]

  for j in range(i+1, N-1):
    x_2, y_2 = xy[j]
    Y = y_2 - y_1
    X = x_2 - x_1
    #y - y_1 = Y / X * (x - x_1)
    score = 2
    for k in range(j+1, N):
      #print(f'{xy[i]}, {xy[j]}, {xy[k]}')
      x_3, y_3 = xy[k]
      if (y_3 * X == Y * (x_3 - x_1) + y_1 * X):
        score += 1
    scores.append(score)

print(max(scores))