N=int(input())
P=[tuple(map(int,input().split())) for i in range(N)]

ANS=2
from collections import Counter
from fractions import Fraction
for i in range(N-2):
    x,y=P[i]
    C=Counter()
    for j in range(i+1,N):
        x2,y2=P[j]
        if x2==x:
            C["a"]+=1
        else:
            C[Fraction((y2-y),(x2-x))]+=1

    #print(C)
    ANS=max(ANS,max(C.values())+1)

print(ANS)