import java.util.*;
import java.io.*;

public class Main{
 public static void main(String[] args){
   Scanner s = new Scanner(System.in);
   int n = s.nextInt();
   int[] v = new int[n];
   
   int profit =0;
   for(int i=0; i<n; i++){
    v[i] = s.nextInt(); 
   }
   
   for(int j=0; j<n; j++){
    profit = profit + Math.max(0,v[j] - s.nextInt());
   }
   
   System.out.print(profit);
 }
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz