Cassido broken solution!

max_num.py

def digits_list_to_int(digits):
  return int("".join([str(i) for i in digits]))

def max_num(n, m, k):
  return digits_list_to_int(
    sorted(n + m)[::-1][:k]
  )

def max_num_uniq(n, m, k):
  return digits_list_to_int(
    sorted(set(n + m))[::-1][:k]
  )

n = [3,4,6,5]
m = [9,0,2,5,8,3]
k = 5
print(max_num(n, m, k)) # 98655
print(max_num_uniq(n, m, k)) # 98654

# The right answer should be 98653??