import java.util.*;

public class Main {
  public static void main(String[] args ) throws Exception {
    Scanner sc = new Scanner(System.in);
    int A = sc.nextInt();
    int Nums1[]=new int[A];
    int Nums2[]=new int[A];
    int count=0;
    int Nums3[]=new int[A];
    for(int i=0;i<A;i++){
          Nums1[i]=sc.nextInt();
        
    }
    for(int i=0;i<A;i++){
          Nums2[i]=sc.nextInt();
        
    }
    for(int i=0;i<A;i++){
    	Nums3[i]=Nums1[i]-Nums2[i];
    }
    for(int i=0;i<A;i++){
    	if(Nums3[i]>0)	
     count+=Nums3[i];
    }
   	System.out.println(count);
  }
}
/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