N = int(input())
XY = [tuple(map(int, input().split())) for _ in range(N)]
ans = 0

for i in range(N):
    Xi, Yi = XY[i]
    
    for j in range(i+1, N):
        Xj, Yj = XY[j]
        ans_cand = 0
        
        for k in range(N):
            Xk, Yk = XY[k]
            
            if (Yk-Yj)*(Xj-Xi)==(Yj-Yi)*(Xk-Xj):
                ans_cand += 1
        
        ans = max(ans, ans_cand)

print(ans)