import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		//List<String> list= new ArrayList<String>(Arrays.asList(s.split("")));
		//List<Integer> list_gold=new ArrayList<Integer>();
		//Integer[] Republican = new Integer[m];
		int n = sc.nextInt();
		List<Integer> list_kati=new ArrayList<Integer>();
		List<Integer> list_cost=new ArrayList<Integer>();
		int count=0;
		for(int i=0;n>i;i++) {
			int a = sc.nextInt();
			list_kati.add(a);
		}

		for(int i=0;n>i;i++) {
			int a = sc.nextInt();
			list_cost.add(a);
		}

		for(int i=0;n>i;i++) {
			if(list_kati.get(i)>list_cost.get(i))
				count=count+list_kati.get(i)-list_cost.get(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