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];
    int sum = 0;

    for (int i = 0; i < n; ++i) {
      v[i] = sc.nextInt();
    }

    for (int i = 0; i < n; ++i) {
      int c = sc.nextInt();
      sum = (v[i] > c) ? sum + v[i] - c : sum;
    }

    System.out.println(sum);
  }
}
/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