# Ces programmes sont sous licence CeCILL-B V1.

type = input()
poids = int(input())
if type == "verte":
  if poids <= 20:
    print(0.57)
  elif poids <= 50:
    print(0.95)
  elif poids <= 100:
    print(1.40)
elif type == "prioritaire":
  if poids <= 20:
    print(0.60)
  elif poids <= 50:
    print(1.00)
  elif poids <= 100:
    print(1.45)
elif type == "ecopli":
  if poids <= 20:
    print(0.55)
  elif poids <= 50:
    print(0.78)
  elif poids <= 100:
    print(1.00)