output_description: Print the number of attacks Serval needs to make before winning.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      H A
attempt: a, b = input().split()
  c = int(a) // int(b)
  if c * int(b) == a:
      print(c)
  else:
      print(c + 1)
  
problem_description: Statement
  
  Serval is fighting with a monster.
  
  The _health_ of the monster is H.
  
  In one attack, Serval can decrease the monster's health by A. There is no
  other way to decrease the monster's health.
  
  Serval wins when the monster's health becomes 0 or below.
  
  Find the number of attacks Serval needs to make before winning.
samples: [{"input": "10 4", "output": "3\n    \n\n  * After one attack, the monster's health will be 6.\n  * After two attacks, the monster's health will be 2.\n  * After three attacks, the monster's health will be -2.\n\nThus, Serval needs to make three attacks to win.\n\n* * *"}, {"input": "1 10000", "output": "1\n    \n\n* * *"}, {"input": "10000 1", "output": "10000"}]