def onThe(xy,xy1,xy2):
    r1 = (xy1[0] - xy[0]) * (xy2[1] - xy[1])
    r2 = (xy2[0] - xy[0]) * (xy1[1] - xy[1])
    return True if r1 == r2 else False

n = int(input())
g = [list(map(int,input().split())) for i in range(n)]
l = [2]

if len(g) > 2:
    for i in range(n-1):
        for j in range(i+1,n):
            t = 2
            for k in range(j+1,n):
                t += onThe(g[i],g[j],g[k])
            l.append(t)
print(max(l))