from decimal import *

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)