#include <bits/stdc++.h>
using namespace std;

const int N = 505;
using ll = long long;

int a[N];

void solve() {
	int n, m;
	vector<int> vec;
	cin >> n >> m;
	for (int i = 1; i <= n; i++) {
		cin >> a[i];
		int x = a[i];
		while (x > 0) {
			vec.push_back(x);
			x >>= 1;
		}
	}
	
	ll ans = 1e18;
	for (auto v : vec) {
		vector<int> val;
		ll cost = 0;
		for (int i = 1; i <= n; i++) {
			ll tmp = 0;
			int x = a[i];
			while (x / 2 >= v) {
				tmp++;
				x /= 2;
			}
			tmp += abs(x - v);
			val.push_back(tmp);
			cost += tmp;
			
		}
		sort(val.begin(), val.end(), greater<int>());
		for (int i = 0; i < m; i++) cost -= val[i];
		ans = min(ans, cost);
	}
	cout << ans << '\n';
}

signed main() {
	ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
	int T;
	cin >> T;
	while (T--)
	solve();
	return 0;
}