N = int(input())
X, Y = [], []
for i in range(N):
    te, mp = map(int, input().split())
    X.append(te), Y.append(mp)
gosa = 10 ** -10


ans = 0
for i in range(N):
    for j in range(i + 1, N):
        tmp = 0
        if X[i] - X[j]:
            a = (Y[i] - Y[j]) / (X[i] - X[j]) 
            b = Y[i] - a * X[i]
            for k in range(N):
                if a * X[k] + b >= Y[k] - gosa and a * X[k] + b <= Y[k] + gosa:
                    tmp += 1
        else:
            for k in range(N):
                if X[i] == X[k]:
                    tmp += 1
        ans = max(tmp, ans)

print(ans)