output_description: Print the number of years it takes for Takahashi's balance to reach X yen or
  above for the first time.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      X
attempt: input1 = input()
  kbai = int(input1)
  
  input2 = input().split(" ")
  maxs = int(input2[0])
  mins = int(input2[1])
  flg = 0
  ans = 0
  
  while ans < maxs:
      ans = ans + kbai
      if ans >= mins and ans <= maxs:
          flg = 1
  
  if flg == 1:
      print("OK")
  else:
      print("NG")
  
problem_description: Statement
  
  Takahashi has a deposit of 100 yen (the currency of Japan) in AtCoder Bank.
  
  The bank pays an annual interest rate of 1 % compounded annually. (A fraction
  of less than one yen is discarded.)
  
  Assuming that nothing other than the interest affects Takahashi's balance, in
  how many years does the balance reach X yen or above for the first time?
samples: [{"input": "103", "output": "3\n    \n\n  * The balance after one year is 101 yen.\n  * The balance after two years is 102 yen.\n  * The balance after three years is 103 yen.\n\nThus, it takes three years for the balance to reach 103 yen or above.\n\n* * *"}, {"input": "1000000000000000000", "output": "3760\n    \n\n* * *"}, {"input": "1333333333", "output": "1706"}]