from collections import defaultdict
import sys
readline=sys.stdin.readline
write=sys.stdout.write
from math import gcd as GCD
import math

N=int(readline())
X,Y=[],[]
for i in range(N):
    x,y=map(int,readline().split())
    X.append(x)
    Y.append(y)
ans=0
for i in range(N):
    XY=[]
    cnt=defaultdict(int)
    for x,y in zip(X,Y):
        if (X[i],Y[i])==(x,y):
            continue
        x-=X[i]
        y-=Y[i]
        g=GCD(x,y)
        x//=g
        y//=g
        x,y=min((x,y),(-x,-y))
        cnt[(x,y)]+=1
    ans=max(ans,max(cnt.values())+1)
print(ans)