#include <stdio.h>
#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
using namespace atcoder;
using mint = modint998244353;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf32 1000000001
#define Inf64 4000000000000000001

void go(long long &a,long long &b,long long &c){
	long long na = a+b;
	long long nb = b+c;
	long long nc = c+a;
	a = na/2;
	b = nb/2;
	c = nc/2;
}

int main(){
	
	int _t;
	cin>>_t;
	rep(_,_t){
		long long a,b,c,k;
		cin>>a>>b>>c>>k;
		
		for(long long i=0;i<min(100LL,k);i++){
			go(a,b,c);
			//cout<<a<<','<<b<<','<<c<<','<<a+b+c<<endl;
			
			
		}
		cout<<a+b+c<<endl;
	}
	
	return 0;
}