# P-1 MCS 260 due Mon 1 Feb 2010 : converting weights

print 'Welcome to our weight conversion program!'
n = input("give a weight : ")
print "-> your weight is %.2f" % n
# we view n first as a weight in kg and apply 3 conversions :
n_kg2lb = n*2.205         # 1 kilogram is 2.205 pounds
n_kg2gl = n*0.2642        # 1 kilogram is 0.2642 gallons
n_kg2l = n_kg2gl*3.785    # 1 gallon is 3.785 liters
# we then see n as a weight in lb and apply 3 conversions :
n_lb2kg = n*0.4536        # 1 pound is 0.4536 kilograms
n_lb2gl = n*0.1198        # 1 pound is 0.1198 gallons
n_lb2l = n_lb2gl*3.785    # 1 gallon is 3.785 liters
# at last we print the results :
print '%.2f kg = %.2f lb = %.2f gal = %.2f l' % (n,n_kg2lb,n_kg2gl,n_kg2l)
print '%.2f lb = %.2f kg = %.2f gal = %.2f l' % (n,n_lb2kg,n_lb2gl,n_lb2l)