def f(n):
    s = ""
    while n > 0:
        s += str(n % 6)
        n //= 6
    s = s[::-1]
    return s

Min = 1000000000000000
for N in range(1, 1000):
    b = f(N)
    if int(b) % 3 == 0:
        b = b + f(N)[:2]
    else:
        b = b + f((int(b) % 3) * 10)
    R = int(b, 6)
    if R > 680:
        Min = min(R, Min)
print(Min)