def line(x1,y1,x2,y2):
    if x1==x2:
        return ("I",x1)
    elif y1==y2:
        return (y1,"I")
    else:
        #Y=aX+b
        a=(y1-y2)/(x1-x2)
        return (y1-(a*x1),a)

N=int(input())
L=[]
D={}
for i in range(N):
    x,y=map(int,input().split())
    L.append([x,y])

for i in range(N):
    for j in range(N):
        if i==j:
            continue
        else:
            if line(L[i][0],L[i][1],L[j][0],L[j][1]) not in D:
                D[line(L[i][0],L[i][1],L[j][0],L[j][1])]=1
            else:
                D[line(L[i][0],L[i][1],L[j][0],L[j][1])]+=1
Max=max(D.values())
#print(D)
#print(Max)
for i in range(1,10**3):
    if i*(i-1)==Max:
        print(i)
        exit()