编辑代码

import java.util.*;
import java.util.ArrayList;
import java.lang.Integer;
// 1:无需package
// 2: 类名必须Main, 不可修改

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int N = scan.nextInt();
        ArrayList<Integer> res = new ArrayList<>();
        for(int i = 0;i<N;i++)
        {
          String s = scan.nextLine();
          for (String str : s.split(" "))
          {
            res.add(Integer.valueOf(s));
          }
        }
        int m = 0;
        int n = 0;
        Integer[] num = new Integer[res.size()];
        num = res.toArray(num);
        Arrays.sort(num);
        for(int i = 1;i<num.length;i++)
        {
          if(num[i]-num[i-1]>1)
          {
            m = num[i]-1;
          }
          else if(num[i]==num[i-1])
          {
            n = num[i];
          }
        }

        scan.close();
        System.out.println(m+" "+n);
    }
}