gambuxo

#/usr/bin/python
# -*- coding: latin-1 -*-

import sys
print "Welcome to Merchant\'s Guide To The Galaxy"
print "Type a command and then press CTRL + D :"

symbols = {
    "i" : 1,
    "v" : 5,
    "x" : 10,
    "l" : 50,
    "c" : 100,
    "d" : 500,
    "m" : 100,
}

alg = {}
ideal = {}

def note(t):
    """give back output"""
    print t

def check(term):
    """analyse a kind of number"""
    x = 0
    try:
        y = [alg[i] for i in term]
    except:
        return -1

    while y:
        z = y.pop(0)
        if y and y[0] > z:
            x -= z
        else:
            x += z

    return x

def function(sentence):
    """analyse the sentence"""

    term = sentence.lower().split(None)

    if not term:
        return

    if len(term) == 3 and term[1] == "is":
        cod = term[0]
        obj = term[2]

        if not obj in symbols:
            return note("'%t' is not a valid format." % obj)
        alg[cod] = symbols[obj]
        return

    if len(term) > 4 and term[-1] == "credits" and term[-3] == "is":
        term.pop()
        try:
            obj = float(term[-1])
        except:
            return note("'%t' is not a valid numeric value" % term[-1])

        term.pop()
        term.pop()
        p = term.pop()
        x = check(term)

        if x < 0:
            return note("Not a valid type")

        ideal[p] = obj / x
        return

    if term[0:3] == ["how", "much", "is"]:
        term = term[3:]
        if term[-1] == "?":
            term.pop()

        x = check(term)
        if x < 0:
            return note("'%t' isn't a Galactic term" % " ".join(term))

        print " ".join(term), "is", x
        return

    if term[0:4] == ["how", "many", "credits", "is"]:
        term = term[4:]
        if term[-1] == "?":
            term.pop()

        p = term.pop()
        if not p in ideal:
            return note("There's no information about %t" % p)

        x = check(term)
        if x < 0:
            return note("'%t' isn't a Galactic term" % " ".join(term))

        print " ".join(term), p.title(), "is", int(x * ideal[p]), "Credits"
        return

    return note("I've no idea what you are talking about")

for sentence in sys.stdin:
   function(sentence)