def f(a, b, n):
    if a + b >= 77:
        return n == 2 or n == 4
    if n == 2:
        return False

    if n % 2 == 0:
        return f(a + 1, b, n + 1) * f(a * 2, b, n + 1) * f(a, b + 1, n + 1) * f(a, b * 2, n + 1)

    return f(a + 1, b, n + 1) * f(a * 2, b, n + 1) * f(a, b + 1, n + 1) * f(a, b * 2, n + 1)


for x in range(1, 70):
    if f(7, x, 0):
        print(x)