import java.util.Scanner;
import java.util.InputMismatchException;

class Main {
   public static void main(String args[]) {
      Scanner sc = new Scanner(System.in);
      int n = sc.nextInt();
      int[] vset = new int[n];
      int[] cset = new int[n];
      int i,j;
      int sum = 0;
      int cost = 0;
      for (i = 0; i < n; i++) {
         vset[i] = sc.nextInt();
      }
      for (i=0; i<n; i++) {
         cset[i] = sc.nextInt();
      }
      for (i=0; i<n; i++) {
         cost = vset[i] - cset[i];
         if (cost > 0) {
            sum = sum + cost;
         } else {
            continue;
         }
      }
      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