class calcd(object):
    def __init__(self,yuan):

        self.bottelunit=3
        self.capunit=4
        self.unit=5   
        
        self.num=yuan//self.unit
        self._gai=0
        self._ping=0

    def calcp3(self,p):
        r=(p+self._ping)
        self._ping=r%self.bottelunit
        if r>=self.bottelunit:
            self.num+=r//self.bottelunit
            return r//self.bottelunit
        return 0

    def calcg4(self,g):
        r=(g+self._gai)
        self._gai=r%self.capunit
        if r>=self.capunit:
            self.num+=r//self.capunit       
            return r//self.capunit
        return 0

    def go(self):

        x=self.num
        p= self.calcp3(x)
        g= self.calcg4(x)
        x=p+g

        while (x+self._gai)>=self.capunit or (x+self._ping)>=self.bottelunit:
            print('换取%d瓶酒' %x)
            print('剩余%d瓶盖' %self._gai)
            print('剩余%d空瓶' %self._ping)
            g=self.calcg4(x)
            p=self.calcp3(x)
            x=g+p
    
if __name__=="__main__":
    c=calcd(528)
    c.go()
    print ('--%s' %c.num)