n = int(input())
li = []
for _ in range(n):
    li.append(list(map(int,input().split())))
max_cnt = 0
for i in range(n):
    for j in range(i+1,n):
        cnt = 0
        if li[i][0]-li[j][0] == 0:
            for k,_ in li:
                if k == li[i][0]:
                    cnt += 1
            max_cnt = max(cnt, max_cnt)
            continue
        a = (li[i][1]-li[j][1])/(li[i][0]-li[j][0])
        b = li[i][1] - a * li[i][0]
        for x,y in li:
            if abs(y - (a * x + b)) < 0.001:
                cnt += 1
        max_cnt = max(cnt, max_cnt)
print(max_cnt)