# your code goes here
x=12345
y=x-1+1
print "X=%s; Y=%s"%(x,y)
print "X is Y? == ?",x is y
print "X == Y? == ?",x == y
print "id(x)=",id(x)
print "id(y)=",id(y)
IyB5b3VyIGNvZGUgZ29lcyBoZXJlCng9MTIzNDUKeT14LTErMQpwcmludCAiWD0lczsgWT0lcyIlKHgseSkKcHJpbnQgIlggaXMgWT8gPT0gPyIseCBpcyB5CnByaW50ICJYID09IFk/ID09ID8iLHggPT0geQpwcmludCAiaWQoeCk9IixpZCh4KQpwcmludCAiaWQoeSk9IixpZCh5KQ==