#!/usr/bin/env python3

# Convert       To      Multiply by
# Kilometers 	Miles 	0.62
# Kilometers 	Feet 	3280.8
# Meters   	    Feet 	3.28
# Centimeters 	Inches 	0.39
# Millimeters 	Inches 	0.039
# Celsius 	    Fahrenheit 	°C x 9/5 + 32 = °F
#
# Inches 	Meters 	0.0254
# Inches 	Centimeters 	2.54
# Inches 	Millimeters 	25.40
# Feet 	    Meters 	0.30
# Yards 	Meters 	0.91
# Yards 	Kilometers 	0.00091
# Miles 	Kilometers 	1.61
# Fahrenheit 	Celsius 	(°F - 32) x 5/9 = °C

# Take user input and determine unit conversion
request = input('Enter number, unit, conversion unit:\n')
rlist = request.split(' ')
amount = float(rlist[0])
units = rlist[1]
conversion = rlist[2]
print(amount, units, conversion)
if units == 'in':
    if conversion == 'cm':
        print(amount * 2.54)
    elif conversion == 'mm':
        print(amount * 25.4)
    else:
        print('Invalid units')
elif units == 'F':
    print((amount - 32) * 5/9)
elif units == 'C':
    print(amount * 9/5 + 32)
else:
    print('Invalid units')