N=int(input())
A=[]
for i in range(N):
    x,y=map(int, input().split())
    A.append((x,y))
ans=0
for i in range(N-1):
    for j in range(i+1,N):
        cnt=0
        x1,y1=A[i][0],A[i][1]
        x2,y2=A[j][0],A[j][1]
        if x1-x2!=0:
            for k in range(N):
                x,y=A[k][0],A[k][1]
                if y-y1==((y2-y1)/(x2-x1))*(x-x1):
                    cnt+=1
        else:
            for k in range(N):
                x,y=A[k][0],A[k][1]
                if x==x1:
                    cnt+=1 
        ans=max(ans,cnt)
print(ans)