totient function by yshl(bin)

\x87\x10'1\x87<({\x928\x9282\x88\x014\x92X{/i\x92>\x923\x928i\x92j0\x92={\x92>\x928i\x92R\x92\xa9\x92>}\x92T{\x928i\x92j0\x92m{\x92@}\x92Ti\x92R}\x92e}\x92H\x92u=}\x92H

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

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