Metric convertor

number = float(input())
vhod = input()
izhod = input()

if vhod == "m":
  if izhod == "cm":
    result = number*100
  elif izhod == "mm":
    result = number*1000

if vhod == "cm":
  if izhod == "m":
    result = number/100
  elif izhod == "mm":
    result = number*10

if vhod == "mm":
  if izhod == "cm":
    result = number/10
  elif izhod == "m":
    result = number/1000

print(f"{result:.3f}")