local n = io.read("*n")
local x, y = {}, {}
for i = 1, n do
  x[i], y[i] = io.read("*n", "*n")
end
local ret = 0
for i = 1, n - 1 do for j = i + 1, n do
  local cnt = 0
  local xx = x[j] - x[i]
  local yy = y[j] - y[i]
  for k = 1, n do
    if (x[k] - x[i]) * yy == (y[k] - y[i]) * xx then
      cnt = cnt + 1
    end
  end
  ret = math.max(ret, cnt)
end end
print(ret)