output_description: Print an integer representing the minimum number of minutes needed to make N
  pieces of takoyaki.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      N X T
attempt: n, k, t = map(int, input().split())
  count = 0
  while n < 0:
      n -= k
      count += 1
  print(count * t)
  
problem_description: Statement
  
  Takahashi loves takoyaki - a ball-shaped snack.
  
  With a takoyaki machine, he can make at most X pieces of takoyaki at a time,
  taking T minutes regardless of the number of pieces to make.
  
  How long does it take to make N takoyaki?
samples: [{"input": "20 12 6", "output": "12\n    \n\nHe can make 12 pieces of takoyaki in the first 6 minutes and 8 more in the\nnext 6 minutes, so he can make 20 in a total of 12 minutes.\n\nNote that being able to make 12 in 6 minutes does not mean he can make 2 in 1\nminute.\n\n* * *"}, {"input": "1000 1 1000", "output": "1000000\n    \n\nIt seems to take a long time to make this kind of takoyaki."}]