N=int(input())
XY=[list(map(int,input().split())) for i in range(N)]
ans=0
for i in range(N-1):
    x1=XY[i][0]
    y1=XY[i][1]
    for j in range(i+1,N):
        x2=XY[j][0]
        y2=XY[j][1]
        memo=0
        if x1==x2:
            for k in range(N):
                if XY[k][0]==x1:
                    memo+=1
        else:
            a=y1-y2
            b=x1*y2-x2*y1
            c=x1-x2
            for k in range(N):
                if c*XY[k][1]==a*XY[k][0]+b:
                    memo+=1
        if memo>ans:
            ans=memo
print(ans)