import java.util.Scanner;

public class Main{
	static long mod = (long)10e9+7;
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		}
		System.out.println(ans);
	}
} import java.util.Scanner; Scanner java.util public class Main{
	static long mod = (long)10e9+7;
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		}
		System.out.println(ans);
	}
} Main static long mod = (long)10e9+7; mod (long)10e9+7 (long)10e9 7 public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, 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]; V new int[N] N int[] C = new int[N]; C new int[N] N for(int i = 0; i < N; i++) V[i] = sc.nextInt(); int i = 0; int i = 0; i 0 i < N i N i++ i++ i V[i] = sc.nextInt(); V[i] = sc.nextInt() V[i] V i sc.nextInt() sc.nextInt sc for(int i = 0; i < N; i++) C[i] = sc.nextInt(); int i = 0; int i = 0; i 0 i < N i N i++ i++ i C[i] = sc.nextInt(); C[i] = sc.nextInt() C[i] C i sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			ans += Math.max(0, V[i] - C[i]);
		} {
			ans += Math.max(0, V[i] - C[i]);
		} ans += Math.max(0, V[i] - C[i]) ans Math.max(0, V[i] - C[i]) Math.max Math 0 V[i] - C[i] 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{
	static long mod = (long)10e9+7;
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		}
		System.out.println(ans);
	}
} public class Main{
	static long mod = (long)10e9+7;
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

public class Main{
	static long mod = (long)10e9+7;
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i = 0; i < N; i++) V[i] = sc.nextInt();
		for(int i = 0; i < N; i++) C[i] = sc.nextInt();

		int ans = 0;
		for(int i = 0; i < N; i++) {
			ans += Math.max(0, V[i] - C[i]);
		}
		System.out.println(ans);
	}
}