<?php
$n=date("ymd",rand(-2e9,1e9)).rand(101,999).rand()%10;echo$n.(10-($n[0]+3*$n[1]+7*$n[2]+9*$n[3]+$n[4]+3*$n[5]+7*$n[6]+9*$n[7]+$n[8]+3*$n[9])%10);
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