Metric Converter

number = float(input())
value = input()
valueOutPut = input()
if value == "mm" and valueOutPut =="cm":
    number = number / 10
elif value == "mm" and valueOutPut == "m":
    number = number / 1000
elif value == "cm" and valueOutPut == "m":
    number = number / 100
elif value == "cm" and valueOutPut == "mm":
    number = number *10
elif value == "m" and valueOutPut == "cm":
    number = number * 100
elif value == "m" and valueOutPut == "mm":
    number = number * 1000
print(f"{number:.3f}")