s1,s2=s.split('.')
    s=s1+s2
    def ints(e):
        return {'0': 0, '1': 1, '2': 2, '3': 3, '4': 4, '5': 5, '6': 6, '7': 7, '8': 8, '9': 9}[e]
    a= list(map(ints,s))
    def c(x,y):
        return (x*10+y)
    return (reduce(c ,a))/1000