n=int(input())
dot=[None]*n
for i in range(n):
    dot[i]=map(int, input().split())
ans=2
eps=0.00001
for i in range(n-1):
    for j in range(i+1,n):
        def f(x):return (dot[j][1]-dot[i][1])/(dot[j][0]-dot[i][0])*(x-dot[i][0])+dot[i][1]
        c=0
        for k in range(n):
            if dot[k][1]-f(dot[k][0])<eps:
                c+=1
        ans=max(ans,c)
print(ans)