def main():

  current_step, home_step = map(int, input().split())
  if current_step < home_step:
    print("1")
  elif current_step % home_step == 0:
    print(current_step // home_step + 1)
  else:
    print(current_step // home_step + 1)

if __name__ == '__main__':
  main()