from collections import Counter
n=int(input())

ps = []
for _ in range(n):
    a,b=map(int,input().split())
    ps.append((a,b))

from itertools import combinations

pset = set()
for p1, p2 in combinations(ps,2):
    if p2[0] != p1[0]:
        katamuki = (p2[1] - p1[1])/(p2[0] - p1[0])
    else:
        katamuki = 0
    takasa = p1[1] - katamuki*p1[0]
    # print(katamuki, takasa)
    pset.add((katamuki, takasa))

cs = []
for katamuki, takasa in pset:
    c = 0
    for p in ps:
        if p[1] == p[0]*katamuki + takasa:
            c += 1
    cs.append(c)
print(max(cs))