import os

input = open(os.path.dirname(__file__) +
             "/input.txt", "r").read().split('\n\n')


class Operation:
    def __init__(self, operand, y: int):
        self.operand = operand
        self.y = y

    def operate(self, input: int) -> int:
        i = int(input)
        j = self.y
        if self.y == 'old':
            j = i
        result: int = 0
        if (self.operand == '+'):
            result = int(i) + int(j)
        if (self.operand == '*'):
            result = int(i) * int(j)
        return result


class Monkey:
    def __init__(self, monkeyid: int, items, operation, testNumber: int, actionTrue: int, actionFalse: int):
        self.monkeyid = monkeyid
        self.items = items
        op = operation.split()
        self.operation = Operation(op[1], op[2])
        self.testNumber = testNumber
        self.actionTrue = int(actionTrue)
        self.actionFalse = int(actionFalse)
        self.inspections = 0

    def addItem(self, item: int):

        self.items.append(item)

    def inspect(self):
        if len(self.items) == 0:
            return (-1, -1)
        self.inspections += 1
        item = self.items.pop(0)
        worry = int(self.operation.operate(item))
        worry = worry//3

        if worry % int(self.testNumber) == 0:
            return (self.actionTrue, worry)
        else:
            return (self.actionFalse, worry)

    def __getitem__(self, i):
        return self

    def itemCount(self):
        return len(self.items)

    def __str__(self):
        return "Monkey " + str(self.monkeyid) + ": "+str(self.items)+" true: "+str(self.actionTrue)+" false: "+str(self.actionFalse)


monkeys = {}


for l in input:
    data = l.splitlines()

    monkeyid = data[0].split()[1][0]
    items = []
    itemline = data[1].strip().split(': ')
    for i in itemline[1].strip().split(', '):
        items.append(int(i))
    operation = data[2].split('=')[1]
    test = int(data[3].split()[3])
    optrue = int(data[4].strip().split()[5])
    opfalse = int(data[5].strip().split()[5])
    m = Monkey(monkeyid, items, operation, test, optrue, opfalse)
    monkeys[monkeyid] = m

for round in range(20):
    for m in monkeys:
        while len(monkeys[m].items) != 0:
            (nextmonkey, item) = monkeys[m].inspect()
            monkeys[str(nextmonkey)].addItem(int(item))
tot = []

for m in monkeys:
    tot.append(monkeys[m].inspections)

tot.sort()
print(tot[-1]*tot[-2])