# coding=UTF8
# -*- coding: utf-8 -*-

def index(old, young):
    return((old-young)/(old+young))

old = [349.0,327.0,323.0,287.0,282.0,260.0,257.0,254.0,250.0,247.0,10.0,10.0,0,9000.0,1.0,3.0,1.0,400.0]
young = [148.0,179.0,58.0,130.0,110.0,89.0,100.0,128.0,78.0,67.0,20.0,0,20.0,1.0,900.0,1.0,3.0,200.0]

for i in range(0, len(young)):
    print "%i, %i >> %f" % (old[i], young[i], index(old[i], young[i]))
