from collections import Counter
N = int(input())
XY = [list(map(int, input().split())) for _ in range(N)]
INF = 10**9
cnt = 0
for i in range(N):
    a, b = XY[i]
    K = []
    for j in range(N):
        if i==j:
            continue
        c, d = XY[j]
        if c-a!=0:
            k = (d-b)/(c-a)
            K.append(k)
        else:
            K.append(INF)
    c = Counter(K)
    cnt = max(cnt, max(c.values())+1)
print(cnt)