Python-сообщество

 bank = 100
profit = 0
while bank >= 0:
    if vasya > kolya:
        profit += 1 
        bank = profit + bank
    elif vasya < kolya:
        profit -= 1 
        bank = profit + bank
    else:
      pass
                    

 bank = 100
def banks(profit):
    global bank
    bank = profit + bank
while bank >= 0:
    if vasya > kolya:
        profit = 1 
        banks(profit)
    elif vasya < kolya:
        profit = -1 
        banks(profit)
    else:
        pass

 class Bank():
    def __init__(self):
        self.bank = 100
    def banks(self,profit):
        self.bank += profit
        return self.bank
b = Bank()
print b.banks(-1)
print b.banks(11)