import collections, itertools

F = lambda i,j : (j[1]-i[1])/(j[0]-i[0]) if j[0]-i[0] != 0 else None

N = int(input())

P = []
for i in range(N):
  P.append(list(map(int, input().split(' '))))

lst = []
dic = {}

for x, y in itertools.combinations(range(len(P)), r=2):
  a = F(P[x], P[y])
  b = P[x][1] - a*P[x][1] if a != None else P[x][0]
  A = str(a) + '_' + str(b)
  lst.append(A)
  try:
    dic[A].append(x)
    dic[A].append(y)
  except:
    dic[A] = [x, y]

c = collections.Counter(lst)
print(len(set(dic[c.most_common(1)[0][0]])))