n=int(input())
x=[]
y=[]
for i in range(n):
    a,b=map(int,input().split())
    x.append(a)
    y.append(b)

ans=2
for i in range(n):
    for j in range(i+1,n):
        dx=x[i]-x[j]
        dy=y[i]-y[j]
        cnt=0
        for k in range(n):
            dx2=x[i]-x[k]
            dy2=y[i]-y[k]
            if dy*dx2==dy2*dx:
                cnt+=1
        ans=max(ans,cnt)

print(ans)