1852.蚂蚁--变动为静

import java.util.Scanner;
public class Main {
public static void main(String[] args) {
    Scanner sc = new Scanner (System.in);
    while(sc.hasNext()) {
        int n = sc.nextInt();
        while(n-->0) {
            int len = sc.nextInt();
            int length = sc.nextInt();
            int arr [] = new int [length];
            int min = 0;
            int max = 0;
            for(int i = 0 ; i < length ; i++) {
                arr[i] = sc.nextInt();
                min = Math.max(min, Math.min(arr[i], len-arr[i]));
                max = Math.max(max, Math.max(arr[i], len-arr[i]));
            }
            System.out.println(min+" "+max);
        }
    }
}
}