n = int(input())
i = 0
p = 1
arr = []
if n < 7 :
    res = str(n)
else :
    while p > 0 :
        i = 0
        while n >= 7**i :
            i+=1
        if i == 0 :
            break
        else :
            i -= 1
        p,q = divmod(n,7**i)
        arr.append((str(p),i))
        n = n - p * 7 **i
    #print(arr)
    res = ['0' for k in range(arr[0][1]+1)]
    for k in range(len(arr)) :
        res[arr[k][1]] = arr[k][0]
print(''.join(reversed(res)))