N = int(input())

rank0 = 0
if N % 7 != 0:
    rank0 = N % 7
    N -= rank0

max_rank = 0
_N = N
while _N >= 7:
    max_rank += 1
    _N //= 7

base7 = []
for i in range(max_rank, 0, -1):
    count = 0
    for j in range(1, 7, 1):
        if N == j * (7 ** i):
            count = j
            break
        elif N < j * (7 ** i):
            count = j - 1
            break
    if N > 6 * (7 ** i):
        count = 6
    N -= count * (7 ** i)
    base7.append(count)

base7.append(rank0)
print("".join([str(i) for i in base7]))