#include <cstdio>
#include <cstdlib>
#include <iostream>
#include <cstring>
#include <string>
#include <algorithm>
#include <cmath>
#include <vector>
#include <queue>
#include <stack>
#include <deque>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
typedef long long int ll;
using namespace std;
#define INF 1234567890
#define LIMIT 1

int main() {
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	int _T = 0;
	cin >> _T;
	while (_T--)
	{
		int len, n;
		int maxtime = 0, mintime = 0;
		cin >> len >> n;
		for (int i = 0; i < n; i++) {
			int x;
			cin >> x;
			maxtime = max({
				maxtime,
				x,
				len-x
			});
			mintime = max({
				mintime,
				min(
					x,
					len - x
				)
			});
		}
		cout << mintime << " " << maxtime << "\n";
	}

	return 0;
}