# your code goes here
class X:
def __init__(self, n):
self.x = n
def __add__(self, n):
self.x = self.x + n
def __repr__(self):
return str(self.x)
def add_one(a):
a = a + 1
x = X(10)
add_one(x)
print(x)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCgpjbGFzcyBYOgoJZGVmIF9faW5pdF9fKHNlbGYsIG4pOgoJCXNlbGYueCA9IG4KCWRlZiBfX2FkZF9fKHNlbGYsIG4pOgoJCXNlbGYueCA9IHNlbGYueCArIG4KCWRlZiBfX3JlcHJfXyhzZWxmKToKCQlyZXR1cm4gc3RyKHNlbGYueCkKCmRlZiBhZGRfb25lKGEpOgoJYSA9IGEgKyAxCgkKeCA9IFgoMTApCmFkZF9vbmUoeCkKCnByaW50KHgp