use integer;
<>;
for(<>){
    ($a,$b,$c)=glob;
	$d=$b>>1;
	$b-=$d*2;
	$e=$a<$c?$a:$c;
	$a-=$e;
	$c-=$e;
	$f=$a<$b?$a:$b;
	$g=$c>>1;
	print$d*2+$e*2+$f+$g,$/;
}