import calendar\x0d def f(a):\x0d if calendar.isleap(a):w="a"\x0d else:w="not a"\x0d return w\x0d while 1:\x0d a=input()\x0d print a,"is",f(a),"leap year."
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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