#yuki1041
n=int(input())
lx=[]
ly=[]
for i in range(n):
 x,y=map(int,input().split())
 lx.append(x)
 ly.append(y)
res=2
for a in range(n):
 for b in range(a+1,n):
  dx=lx[a]-lx[b]
  dy=ly[a]-ly[b]
  cnt=0
  for i in range(n):
   dx2=lx[a]-lx[i]
   dy2=ly[a]-ly[i]
   if dy*dx2==dy2*dx:
    cnt+=1
  res=max(res,cnt)
print(res)