#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include <map>
#include <vector>
#include <queue>
#include <deque>
#include <set>
#include <stack>
#include <algorithm>
#include <array>
#include <unordered_set>
#include <unordered_map>
#include <string>
using namespace std;

bool rcmp(int a, int b) { return a>b; }
typedef long long LL;



int main() {
    int n, i;
    LL a, b, c, k, na, nb, nc;
    int tc; scanf("%d", &tc); while(tc) { tc--;
        scanf("%lld %lld %lld %lld", &a, &b, &c, &k);
        for (i=0; i<k; i++) {
            na=(b+c)/2;
            nb=(c+a)/2;
            nc=(a+b)/2;
            a=na; b=nb; c=nc;
            if (a==b&&b==c) break;
        }
        printf("%lld\n", a+b+c);
    }
    return 0;
}