import collections
n=int(input())
if n==2:print(2);exit(0)
L=[list(map(int,input().split())) for _ in [0]*n]
#print(L)
M=[]
for i in range(n):
	for j in range(i+1,n):
		if L[j][0]==L[i][0]:a=101
		else: a=(L[j][1]-L[i][1])/(L[j][0]-L[i][0])+0.
		
		if a>100:b=L[i][0]
		else:b=L[i][1]-a*L[i][0]
		M.append(str(a)+'/'+str(b))
		#print(L[i],L[j],a,b)
S=collections.Counter(M)
#print(S)
print(int((2*S.most_common()[0][1])**.5)+1)