import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	}} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	}} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int v[] = new int[n + 1]; v new int[n + 1] n + 1 n 1 int c[] = new int[n + 1]; c new int[n + 1] n + 1 n 1 int ans=0; ans 0 for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		} int i=1; int i=1; i 1 i<=n i n i++ i++ i {
		v[i]=sc.nextInt();
		} {
		v[i]=sc.nextInt();
		} v[i]=sc.nextInt() v[i] v i sc.nextInt() sc.nextInt sc for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}} int i=1; int i=1; i 1 i<=n i n i++ i++ i {
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}} {
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}} c[i]=sc.nextInt() c[i] c i sc.nextInt() sc.nextInt sc if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		} v[i]>=c[i] v[i] v i c[i] c i {
		ans=ans+v[i]-c[i];
		} ans=ans+v[i]-c[i] ans ans+v[i]-c[i] ans+v[i] ans v[i] v i c[i] c i System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	}} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	}} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int v[] = new int[n + 1];
		int c[] = new int[n + 1];
int ans=0;
		for(int i=1;i<=n;i++){
		v[i]=sc.nextInt();
		}
		for(int i=1;i<=n;i++){
		c[i]=sc.nextInt();

		if(v[i]>=c[i]){
		ans=ans+v[i]-c[i];
		}}
System.out.println(ans);
	}}