import java.util.Scanner;

class Main{
  public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    
    String firstline = scanner.nextLine();
    String secondline = scanner.nextLine();
    String thirdline = scanner.nextLine();
    
    String fl[] = firstline.split("\\s");
    String sl[] = secondline.split("\\s");
    String tl[] = thirdline.split("\\s");
    
    int N = Integer.parseInt(fl[0]);
    int j;
    int c;
    int max = 0;
    for(int i = 0; i < N; i++){
      j = Integer.parseInt(sl[i]);
      c = Integer.parseInt(tl[i]);
      if(j > c){
        max += j - c;
      }
    }
    System.out.println(max);
  }
}
/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