N=int(input())

point=[]
for _ in range(N):
    point.append(list(map(int,input().split())))
    
ans=0
for i in range(N-1):
    for j in range(i+1,N):
        #y=ax+b
        if (point[j][0]-point[i][0])!=0:
            a=(point[j][1]-point[i][1])/(point[j][0]-point[i][0])
            b=point[i][1]-a*point[i][0]
            
            temp=2
            for k in range(N):
                if k==i or k==j:
                    continue
                else:
                    if point[k][1]==a*point[k][0]+b:
                        temp+=1
        else:
            temp=2
            for k in range(N):
                if k==i or k==j:
                    continue
                else:
                    if point[k][0]==point[i][0]:
                        temp+=1
                        
            
        ans=max(ans,temp)
        
print(ans)