n=int(input())

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

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 dx*dy2 == dy*dx2:
                cnt+=1
        ans=max(ans,cnt)

print(ans)