mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    N = int(input())
    XY = []
    for _ in range(N):
        x, y = map(int, input().split())
        XY.append((x, y))

    ans = 0
    for i in range(N):
        xi, yi = XY[i]
        for j in range(i+1, N):
            xj, yj = XY[j]
            cnt = 0
            for k in range(N):
                xk, yk = XY[k]
                if (yj-yi) * (xk-xi) == (yk-yi) * (xj-xi):
                    cnt += 1
            ans = max(ans, cnt)
    print(ans)


if __name__ == '__main__':
    main()