def main():
    N = int(input())

    starting = False
    res = []
    for i in range(12):
        tmp = 7**(11-i)
        if N >= tmp:
            starting = True
            res.append(N//tmp)
            N = N%tmp
        elif starting:
            res.append(0)
    if res == []:
        print(0)
    else:
        print(''.join(map(str,res)))


if __name__ == "__main__":
    main()