import java.util.Scanner;
import java.util.ArrayList;
import java.util.Collections;

public class Main {

  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int total = 0;
    ArrayList<Integer> list1 = new ArrayList<Integer>();
    for (int i = 0; i < N; i++) {
      list1.add(sc.nextInt());
    }
    for (int i = 0; i < N; i++) {
      int A = sc.nextInt();
      if (list1.get(i) > A) {
        total += list1.get(i) - A;
      }
    }
    System.out.println(total);

  }
}

/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