N = int(input())
dot = []
[dot.append(list(map(int,input().split()))) for _ in range(N)]

ans = 0
for i in range(N):
    for j in range(N):
        tmp = 2
        if i == j:
            continue
        for k in range(N):
            if k == i or k == j:
                continue

            if dot[i][0] == dot[j][0] :
                if dot[i][0] == dot[k][0]:
                    tmp += 1
                continue

            if dot[i][1] == dot[j][1] :
                if dot[i][1] == dot[k][1]:
                    tmp += 1
                continue
            
            #print(( (dot[i][1] - dot[j][1])/(dot[i][0] - dot[j][0]) )*( (dot[k][0] - dot[j][0]) + dot[j][1] - dot[k][1] ) )
            if   ( (dot[i][1] - dot[j][1])/(dot[i][0] - dot[j][0]) )*( (dot[k][0] - dot[j][0])) + dot[j][1] - dot[k][1]  == 0:
                tmp += 1
        ans = max(tmp,ans)

print(ans)