output_description: Print the sum of the integers between 1 and N (inclusive), whose sum of digits
  written in base 10 is between A and B (inclusive).
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N A B
attempt: N,A,B=map(int,input().split())
  
  sum_k=0
  
  for i in range(N+1):
      if i <10:
          k=i
      elif i<100:
          k=i//10+i%10
      elif i<1000:
          k=i//100+(i%100)//10+(i%100)%10
      else:
          k=1
      if A<=k and k<=B
          sum_k=sum_k+i
        
  print(sum_k)
problem_description: Statement
  
  Find the sum of the integers between 1 and N (inclusive), whose sum of digits
  written in base 10 is between A and B (inclusive).
samples: [{"input": "20 2 5", "output": "84\n    \n\nAmong the integers not greater than 20, the ones whose sums of digits are\nbetween 2 and 5, are: 2,3,4,5,11,12,13,14 and 20. We should print the sum of\nthese, 84.\n\n* * *"}, {"input": "10 1 2", "output": "13\n    \n\n* * *"}, {"input": "100 4 16", "output": "4554"}]