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<?php function ackermann( $m , $n ) { if ( $m==0 ) { return $n + 1; } elseif ( $n==0 ) { return ackermann( $m-1 , 1 ); } return ackermann( $m-1, ackermann( $m , $n-1 ) ); } echo ackermann( 4, 0 ); ?>
Output for git.master, git.master_jit, rfc.property-hooks
13

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