<?for(;$a=fgets(STDIN);)echo preg_match(~\xd0\xd7\xa3\xac\xd5\xd6\xdf\xd7\xc0\xde\xa3\xac\xd5\xa3\xce\xd6\xd0,$a)?NO:YES,~\xf5;
Note that non-ascii characters in the above source code will be escaped (such as \x9f).
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