#input of int(split by space)
def get_i()
  return gets.chomp.split(" ").map(&:to_i)
end
#input of float(split by space)
def get_f()
  return gets.chomp.split(" ").map(&:to_f)
end
#input of string(split by space)
def get()
  return gets.chomp.split(" ")
end
#input of string(split per one character)
def get_nsp()
  return gets.chomp.split("")
end
#yes or no decision
def yn_judge(bool,y="Yes",n="No")
  return bool ? y : n 
end
#create of array
def array(size1,init=nil,size2=-1)
  if size2==-1
    return Array.new(size1){init}
  else
    return Array.new(size2){Array.new(size1){init}}
  end
end

def max(a,b)
    return a>b ? a : b
end

def min(a,b)
    return a>b ? b : a
end

INF=Float::INFINITY

N=gets.to_i
xy=array(N)
N.times do|i|
  xy[i]=get_f
end
xy.sort!{|a,b| a[0]<=>b[0]}
#x0=xy.count{|a| a[0].zero?}
#y0=xy.count{|a| a[1].zero?}
ans=max(x0,y0)
(N-1).times do|i|
    kind={}
    (i+1).upto(N-1) do|j|
        next if (xy[i+1][1]-xy[i][1]).zero?
        val=(xy[j][0]-xy[i][0])/(xy[j][1]-xy[i][1])
        kind[val]=0 if kind[val].nil?
        kind[val]+=1 
    end
    kind.each do|k,v|
        ans=v+1 if ans<v+1
    end
end
puts ans