x = 1000
y = x + 1 - 1 # not just y = 1000, to avoid a *second* implementation detail
print(x, y)
print(id(x), id(y))
print(id(x) == id(y))
print(x is y)
eCA9IDEwMDAKeSA9IHggKyAxIC0gMSAjIG5vdCBqdXN0IHkgPSAxMDAwLCB0byBhdm9pZCBhICpzZWNvbmQqIGltcGxlbWVudGF0aW9uIGRldGFpbAoKcHJpbnQoeCwgeSkKcHJpbnQoaWQoeCksIGlkKHkpKQpwcmludChpZCh4KSA9PSBpZCh5KSkKcHJpbnQoeCBpcyB5KQ==