from math import gcd

N = int(input())

XY = [list(map(int, input().split())) for i in range(N)]

ans = 0

import scipy.stats

for i in range(N):
    
    S = []
    
    x, y = XY[i]
    
    for j in range(i):
        
        X, Y = XY[j]
        X -= x
        Y -= y
        g = gcd(X, Y)
        X //= g
        Y //= g
        if Y < 0:
            X, Y = -X, -Y
        if Y == 0:
            X = abs(X)
        S += [X * 200 + Y]
        
    if len(S) != 0:
        mode, count = scipy.stats.mode(S)
    else:
        count = [0]
    ans = max(ans, count[0] + 1)
    
print(ans)