here is my code if someone can help me, thanks you and greetings.

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Scanner;

public class P1100 {

    public static void main(String[] args) {
       Scanner in = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        int n = in.nextInt();
        int [] vec=new int[n*2];
        for(int i=0;i<n*2;i++)vec[i]=in.nextInt();
        int [] aux=new int[n];
        int mayor=0,menor=100;
        for(int i=1;i<n*2;i=i+2){
            if(menor>vec[i]){
                menor=vec[i];
            }
            if(mayor<vec[i]){
                mayor=vec[i];
            }
        }
        int sig=-1;
        for(int i=0;i<n;i++){
            for(int j=1;j<n*2;j=j+2){
               if(mayor==vec[j] && vec[j]!=-1 ){
                   System.out.printf(" %d %d",vec[j-1],vec[j]);
                   vec[j]=-1;

               }
               if(sig<mayor && sig < vec[j] && vec[j]!=-1){
                   sig=vec[j];
               }
            }
            mayor=sig;
            sig=-1;

        }
        out.flush();

    }
}