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<?php function x($n) { $z="printf"; for($i = 1; $i <= $n; $i++) { $n % $i == 0 && $i != $n ? $f[]=$i & z("$i "): 0; } array_sum($f) == $n ? z('P') : z('I'); } x(28);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function z() in /in/TivsK:5 Stack trace: #0 /in/TivsK(10): x(28) #1 {main} thrown in /in/TivsK on line 5
Process exited with code 255.

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