new_contents: m = int(input())
  
  vv = 0
  
  if 100 <= m <= 5000:
      vv = m * 10 // 1000
  elif 6000 <= m <= 30000:
      vv = m // 1000 + 50
  elif 35000 <= m <= 70000:
      vv = (m // 1000 - 30) // 5 + 80
  elif m > 70000:
      vv = 89
  
  print(str(vv).zfill(2))
  
subject: Create b.py