Gambling

import java.io.PrintWriter;
import java.util.Collections;
import java.util.PriorityQueue;
import java.util.Scanner;


public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    PrintWriter out = new PrintWriter(System.out);
    int n = sc.nextInt();
    PriorityQueue<Integer> pq1 = new PriorityQueue(Collections.reverseOrder());
    PriorityQueue<Integer> pq2 = new PriorityQueue(Collections.reverseOrder());
    long ta = 0;
    long tb = 0;
    for(int i = 0; i < n; i++)
      pq1.add(sc.nextInt());
    for(int i = 0; i < n; i++)
      pq2.add(sc.nextInt());

    int cnt = 0;

    while(!pq1.isEmpty() && !pq2.isEmpty()){
      int a = pq1.peek();
      int b = pq2.peek();
      if(b>=a){
        pq2.poll();
      } else {
        ta += pq1.poll();
      }

      cnt++;

      if(!pq1.isEmpty() && !pq2.isEmpty()){
        a = pq1.peek();
        b = pq2.peek();
        if(a>=b){
          pq1.poll();
        } else {
          tb += pq2.poll();
        }
        cnt++;
      }
    }

    if(cnt%2==0){
      if(!pq1.isEmpty()){
        while(!pq1.isEmpty()){
          ta += pq1.poll();
          if(!pq1.isEmpty()) pq1.poll();
        }
      } else {
        while(!pq2.isEmpty()){
          pq2.poll();
          if(!pq2.isEmpty())
            tb += pq2.poll();
        }
      }
    } else {
      if(!pq2.isEmpty()){
        while(!pq2.isEmpty()){
          tb += pq2.poll();
          if(!pq2.isEmpty()) pq2.poll();
        }
      } else {
        while(!pq1.isEmpty()){
          pq1.poll();
          if(!pq1.isEmpty())
            ta += pq1.poll();
        }
      }
    }

    out.println(ta-tb);
    out.close();
  }

}