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: import sys
  
  sys.setrecursionlimit(4100000)
  
  import math
  
  import logging
  
  logging.basicConfig(level=logging.DEBUG)
  
  logger = logging.getLogger(__name__)
  
  
  def resolve():
      # S = [x for x in sys.stdin.readline().split()][0]  # 文字列 一つ
      # N = [int(x) for x in sys.stdin.readline().split()][0]  # int 一つ
      H, A = [int(x) for x in sys.stdin.readline().split()]  # 複数int
      # grid = [list(sys.stdin.readline().split()[0]) for _ in range(N)]  # 文字列grid
      # grid = [[int(x) for x in sys.stdin.readline().split()]
      #         for _ in range(N)]  # int grid
  
      logger.debug("{}".format([]))
  
      print(math.ceil(H / A))
  
  
  if __name__ == "__main__":
      resolve()
  
  # AtCoder Unit Test で自動生成できる, 最後のunittest.main は消す
  # python -m unittest template/template.py で実行できる
  # pypy3 -m unittest template/template.py で実行できる
  
  import sys
  from io import StringIO
  import unittest
  
  
  class TestClass(unittest.TestCase):
      def assertIO(self, input, output):
          stdout, stdin = sys.stdout, sys.stdin
          sys.stdout, sys.stdin = StringIO(), StringIO(input)
          resolve()
          sys.stdout.seek(0)
          out = sys.stdout.read()[:-1]
          sys.stdout, sys.stdin = stdout, stdin
          self.assertEqual(out, output)
  
      def test_入力例_1(self):
          input = """10 4"""
          output = """3"""
          self.assertIO(input, output)
  
      def test_入力例_2(self):
          input = """1 10000"""
          output = """1"""
          self.assertIO(input, output)
  
      def test_入力例_3(self):
          input = """10000 1"""
          output = """10000"""
          self.assertIO(input, output)
  
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"}]