import java.util.*;

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 ans = 0;
        for (int i=0; i<N; i++) {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        }
      System.out.println(ans);
    }
} import java.util.*; util.* java 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 ans = 0;
        for (int i=0; i<N; i++) {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        }
      System.out.println(ans);
    }
} 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 ans = 0;
        for (int i=0; i<N; i++) {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        }
      System.out.println(ans);
    } 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 ans = 0;
        for (int i=0; i<N; i++) {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        }
      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 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 ans = 0; ans 0 for (int i=0; i<N; i++) {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        } int i=0; int i=0; i 0 i<N i N i++ i++ i {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        } {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        } int benefit = V[i] -C[i]; benefit V[i] -C[i] V[i] V i C[i] C i if (benefit >= 0){
            ans += benefit;
          } benefit >= 0 benefit 0 {
            ans += benefit;
          } ans += benefit ans benefit System.out.println(ans) System.out.println System.out System System.out ans String[] args args
import java.util.*;

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 ans = 0;
        for (int i=0; i<N; i++) {
          int benefit = V[i] -C[i];
          if (benefit >= 0){
            ans += benefit;
          }
        }
      System.out.println(ans);
    }
}