1class Currency:
 2    def __init__(self, name, value):
 3        self.name = name
 4        self.value = value
 5
 6    def __eq__(self, other):
 7        if not isinstance(other, Currency):
 8            return False
 9        return self.name == other.name and self.value == other.value
10
11
12class PoliticalParty:
13    def __init__(self, name, motto, members=None, preferred_currency=None):
14        self.name = name
15        self.__motto = motto
16        self.members = members if members is not None else []
17        self.preferred_currency = preferred_currency
18
19    @property
20    def motto(self):
21        return self.__motto
22
23    def convert_currency_to_voters(self, amount, currrency):
24        result = int(amount / currrency.value)
25        if currrency == self.preferred_currency:
26            result *= 2
27        return result
28
29    def __str__(self):
30        return self.name
31
32    def __add__(self, other):
33        if isinstance(other, PoliticalParty):
34            return Coalition(self, other)
35
36
37class Coalition:
38    def __init__(self, *politicalParties):
39        self.politicalParties = politicalParties
40
41    @property
42    def members(self):
43        return {party.name: party.members for party in self.politicalParties}
44
45    def __add__(self, other):
46        if isinstance(other, PoliticalParty):
47            return Coalition(*self.politicalParties, other)
48        elif isinstance(other, Coalition):
49            return Coalition(*self.politicalParties, *other.politicalParties)
50
51    def __str__(self):
52        return "-".join(str(party) for party in self.politicalParties)
53
54
55class Elections:
56    elections = {}
57
58    def __init__(self, year):
59        self.year = year
60        self.participants = {}
61        Elections.elections[year] = self
62
63    def register_party_or_coalition(self, participant):
64        if not participant in self.participants:
65            self.participants[participant] = 0
66
67    def vote(self, participant):
68        if participant in self.participants:
69            self.participants[participant] += 1
70
71    def rig_elections(self, participant, amount, currrency):
72        votes = 0
73        if isinstance(participant, PoliticalParty):
74            votes = participant.convert_currency_to_voters(amount, currrency)
75
76        elif isinstance(participant, Coalition):
77            for party in participant.politicalParties:
78                votes = max(votes, party.convert_currency_to_voters(amount, currrency))
79
80        if participant in self.participants:
81            self.participants[participant] += votes
82
83    def get_results(self):
84        return {
85            str(participant): votes for participant, votes in self.participants.items()
86        }
87
88    @classmethod
89    def get_results_by_year(cls, year):
90        if year in cls.elections:
91            return cls.elections[year].get_results()
92        return {}