#include <bits/stdc++.h>
#define ioclear std::ios::sync_with_stdio(false);std::cin.tie(nullptr);std::cout.tie(nullptr);
#define endl '\n'
#define int long long 

using namespace std;

void solve()
{
	int n, k;
	std::cin >> n >> k;
	if(n == 0)
	{
	    std::cout << "0\n";
	    return;
	}
	while(n > 1 && k > 0)
	{
		n = (n + 1) / 2;
		k--;
	}
	std::cout << n << endl;
}

signed main()
{
    #ifdef ONLINE_JUDGE
    ioclear;
    #endif
	int t;
	std::cin >> t;
	while(t--)
		solve();
}