from itertools import permutations

def concatenated_integers(numbers):
    numbers = numbers.split()
    per_num = [list(i) for i in permutations(numbers)]

    lowest_number = None
    highest_number = None

    for i in per_num:
        n = int(''.join(i))
        if highest_number == None or n > highest_number:
            highest_number = n

        if lowest_number == None or n < lowest_number:
            lowest_number = n

    return lowest_number, highest_number


print(concatenated_integers('5 56 50'))
print(concatenated_integers('79 82 34 83 69'))
print(concatenated_integers('420 34 19 71 341'))
print(concatenated_integers('17 32 91 7 46'))