#include<bits/stdc++.h>
namespace {
#pragma GCC diagnostic ignored "-Wunused-function"
#include<atcoder/all>
#pragma GCC diagnostic warning "-Wunused-function"
using namespace std;
using namespace atcoder;
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; i--)
#define all(x) begin(x), end(x)
#define rall(x) rbegin(x), rend(x)
template<class T> bool chmax(T& a, const T& b) { if (a < b) { a = b; return true; } else return false; }
template<class T> bool chmin(T& a, const T& b) { if (b < a) { a = b; return true; } else return false; }
using ll = long long;
using P = pair<int,int>;
using VI = vector<int>;
using VVI = vector<VI>;
using VL = vector<ll>;
using VVL = vector<VL>;

} int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  int tt;
  cin >> tt;
  while(tt--) {
    ll d[3], k;
    rep(i, 3) cin >> d[i];
    cin >> k;
    sort(d, d + 3);
    for(int z = 0; z < k; z++) {
      ll nd[3] = {d[0] + d[1] >> 1, d[1] + d[2] >> 1, d[2] + d[0] >> 1};
      sort(nd, nd + 3);
      if (d[0] == nd[0] && d[1] == nd[1] && d[2] == nd[2]) break;
      rep(i, 3) d[i] = nd[i];
    }
    ll ans = d[0] + d[1] + d[2];
    cout << ans << '\n';
  }
}