n=int(input())
l=[[int(j) for j in input().split()]for i in range(n)]
import itertools
ans=0
for i,j in itertools.combinations(range(n),2):
    x1,y1=l[i]
    x2,y2=l[j]
    tmp=0
    if x1-x2==0:
        for x,y in l:
            if x==x1:
                tmp+=1
        ans=max(ans,tmp)
        continue
    for x,y in l:
        if abs((y1-y2)/(x1-x2)*(x-x1)+y1-y)<0.0001:
            tmp+=1
    ans=max(ans,tmp)

print(ans)