#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
  int t;
  cin >> t;
  while (t--) {
    ll a, b, c, k;
    cin >> a >> b >> c >> k;
    while (k--) {
      ll s = (b + c) / 2, t = (c + a) / 2, u = (a + b) / 2;
      a = s, b = t, c = u;
      if (a == b && b == c) break;
    }
    cout << a + b + c << '\n';
  }
  return 0;
}