算法题

public class Test {
    // 4 4
    // 1 2 3 0
    // 5 5
    // 0 0 2 7 8
    // 0 0
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String line = null;
        List<String> list = new ArrayList<>();
        while(!"0 0".equals((line=scan.nextLine()).trim())){
            list.add(line);
        }
        scan.close();
        System.out.println(list);
        for(int i = 0; i + 1 < list.size(); i += 2) {
            int q = Integer.parseInt(list.get(i).trim().split(" ")[1]);
            int mod = 0;
            for(String val : list.get(i+1).trim().split(" ")) {
                if(Integer.parseInt(val)%q>mod) {
                    mod = Integer.parseInt(val)%q;
                }
            }
            System.out.println(mod);
        }
    }
}