def check(x0,y0,x1,y1,x,y):
    return (x1-x0)*(y-y0)==(y1-y0)*(x-x0)
n=int(input())
p=[list(map(int,input().split())) for _ in range(n)]
ans=0
for i in range(n):
    x0,y0=p[i]
    for j in range(i+1,n):
        x1,y1=p[j]
        tmp=2
        for k in range(j+1,n):
            x,y=p[k]
            if check(x0,y0,x1,y1,x,y):
                tmp+=1
        ans=max(ans,tmp)
print(ans)