def f(n):
    s = ""
    while n > 0:
        s += str(n % 3)
        n //= 3
    s = s[::-1]
    return s

Max = 0
for n in range(1, 100000):
    b = f(n)
    if n % 4 == 0:
        b = b + b[-3:]
    else:
        b = b + f((n % 4) * 4)
    R = int(b, 3)
    if R > 127:
        Max = max(Max, R)
print(Max)