output_description: Print the minimum possible value of "the sum of the digits of A" plus "the sum
  of the digits of B".
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N
attempt: N = int(input())
  range_A = range(2,100001)
  min_total = 1000
  for a in range_A:
  	b = N - a
  	if b < 1:continue
  	sum_a = findSumOfDigits(a)
  	sum_b = findSumOfDigits(b)
  	total = sum_a + sum_b
      if total < min_total:
  		min_total = total
  print(min_total)
  
  
problem_description: Statement
  
  Takahashi has two positive integers A and B.
  
  It is known that A plus B equals N. Find the minimum possible value of "the
  sum of the digits of A" plus "the sum of the digits of B" (in base 10).
samples: [{"input": "15", "output": "6\n    \n\nWhen A=2 and B=13, the sums of their digits are 2 and 4, which minimizes the\nvalue in question.\n\n* * *"}, {"input": "100000", "output": "10"}]