# coding: utf-8
# Your code here!
import sys
readline = sys.stdin.readline
read = sys.stdin.read

#n,m,s = [int(i) for i in readline().split()]
n = int(input())
xy = [[int(i) for i in readline().split()] for _ in range(n)]

ans = 2
for i in range(n):
    a,b = xy[i]
    for j in range(i+1,n):
        c,d = xy[j]
        res = 0
        for x,y in xy:
            if (d-b)*(x-a) == (c-a)*(y-b):
                res += 1
        ans = max(res,ans)

print(ans)