func main()
	var t: int :: cui@inputInt()
	for(1, t)
		var a: int :: cui@inputInt()
		var b: int :: cui@inputInt()
		var c: int :: cui@inputInt()
		var f: bool :: (a + b + c) % 2 = 0
		
		var ans: int :: 0
		
		if(a <= c)
			do ans :+ 2 * a
			do c :- a
			do a :: 0
			
			do ans :+ c / 2
			
			if(b % 2 = 0)
				do ans :+ b
			else
				do ans :+ b - 1
			end if
		else
			do ans :+ 2 * c
			do a :- c
			do c :: 0
			
			if(b % 2 = 0)
				do ans :+ b
			else
				if(a <> 0)
					do ans :+ b
				else
					do ans :+ b - 1
				end if
			end if
		end if
		
		do cui@print("\{ans}\n")
	end for
end func