class Book:

    def __init__(self, page):
        self.page = page

    def __sub__(self, other):
        return Book(self.page - other.page)

    def __mul__(self, other):
        return Book(self.page * other.page)

    def __str__(self):
        return str(self.page)


b = Book(25)
c = Book(10)
d = Book(5)
print(b - c - d)
print(b * c * d)

4db7c3394f65868fdf2e90da33a24d3f12214f86
class Book:
    <mask token>
    <mask token>

    def __mul__(self, other):
        return Book(self.page * other.page)

    def __str__(self):
        return str(self.page)


<mask token>

class Book:
    <mask token>

    def __sub__(self, other):
        return Book(self.page - other.page)

    def __mul__(self, other):
        return Book(self.page * other.page)

    def __str__(self):
        return str(self.page)


<mask token>

class Book:

    def __init__(self, page):
        self.page = page

    def __sub__(self, other):
        return Book(self.page - other.page)

    def __mul__(self, other):
        return Book(self.page * other.page)

    def __str__(self):
        return str(self.page)


<mask token>
print(b - c - d)
print(b * c * d)

class Book:

    def __init__(self, page):
        self.page = page

    def __sub__(self, other):
        return Book(self.page - other.page)

    def __mul__(self, other):
        return Book(self.page * other.page)

    def __str__(self):
        return str(self.page)


b = Book(25)
c = Book(10)
d = Book(5)
print(b - c - d)
print(b * c * d)
