import java.util.*;

class Main {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    Integer a[] = new Integer[n];
    Integer b[] = new Integer[n];
    for (int i=0; i<n; i++){
      a[i] = sc.nextInt();
    }
    for (int i=0; i<n; i++){
      b[i] = sc.nextInt();
    }
    int sum =0;   
    for (int i=0; i<n; i++){
      int v = a[i] -b[i];
      if (v>0){
        sum += v;
      }
    }
    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