import java.io.*; import java.util.*; import java.util.function.*; import java.util.stream.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); String result = IntStream.range(0, n).mapToObj(a -> { long[] values = new long[3]; for (int i = 0; i < 3; i++) { values[i] = sc.nextLong(); } long k = sc.nextLong(); while (k-- > 0 && !isEven(values) && !same(values)) { long[] next = new long[3]; for (int i = 0; i < 3; i++) { next[i] = (values[(i + 1) % 3] + values[(i + 2) % 3]) / 2; } values = next; } return String.valueOf(Arrays.stream(values).sum()); }).collect(Collectors.joining("\n")); System.out.println(result); } static boolean isEven(long[] arr) { for (long x : arr) { if (x % 2 == 1) { return false; } } return true; } static boolean same(long[] values) { return values[0] == values[1] && values[1] == values[2]; } } class Scanner { BufferedReader br; StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() { try { br = new BufferedReader(new InputStreamReader(System.in)); } catch (Exception e) { } } public int nextInt() { return Integer.parseInt(next()); } public long nextLong() { return Long.parseLong(next()); } public double nextDouble() { return Double.parseDouble(next()); } public String next() { try { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } } catch (Exception e) { e.printStackTrace(); } finally { return st.nextToken(); } } }