import sys

if len(sys.argv) > 1:
    supposed_inn = sys.argv[1]
else:
    supposed_inn = "123456789"

def calc_checksum_digit(weights, inn):
    inn_splitted = list(map(int, inn))
    res = 0
    for i in range(len(inn_splitted)):
        res += inn_splitted[i] * weights[i]
    res %= 11
    if res > 9:
        res %= 10
    return str(res)

def calc_checksum_digit_individuals(inn):
    inn = inn[:10]
    c1 = calc_checksum_digit((7,2,4,10,3,5,9,4,6,8,0), inn)
    c2 = calc_checksum_digit((3,7,2,4,10,3,5,9,4,6,8,0), inn + c1)
    return inn + c1 + c2

def calc_checksum_digit_jl(inn):
    inn = inn[:9]
    c = calc_checksum_digit((2,4,10,3,5,9,4,6,8,0), inn)
    return inn + c

def calc_checksum_digit_for_inn(inn):
    if len(inn) >= 10:
        return calc_checksum_digit_individuals(inn)
    elif len(inn) >= 9:
        return calc_checksum_digit_jl(inn)
    else:
        return None

inn = calc_checksum_digit_for_inn(supposed_inn)
if inn is None:
    print("Invalid INN", supposed_inn)
else:
    print(inn)