import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    } main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc Integer V[] = new Integer[N]; V new Integer[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] = sc.nextInt() V[i] V i sc.nextInt() sc.nextInt sc Integer C[] = new Integer[N]; C new Integer[N] N 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] = sc.nextInt() C[i] C i sc.nextInt() sc.nextInt sc int kotae = 0; kotae 0 for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        } {
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        } if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            } V[i]>=C[i] V[i] V i C[i] C i {
                kotae = kotae + (V[i]-C[i]);
            } kotae = kotae + (V[i]-C[i]) kotae kotae + (V[i]-C[i]) kotae (V[i]-C[i]) V[i] V i C[i] C i System.out.println(kotae) System.out.println System.out System System.out kotae String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    }
} Main
import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        Integer V[] = new Integer[N];
        for (int i=0; i<N; i++) {
            V[i] = sc.nextInt();
        }
        Integer C[] = new Integer[N];
        for (int i=0; i<N; i++) {
            C[i] = sc.nextInt();
        }
        int kotae = 0;
        for(int i=0; i<N; i++){
            if(V[i]>=C[i]){
                kotae = kotae + (V[i]-C[i]);
            }
        }
        System.out.println(kotae);
    }
}