import java.util.Scanner;
import java.util.ArrayList;
class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int repeatNum = sc.nextInt();
    ArrayList<Integer> list = new ArrayList<Integer>(repeatNum);
    for(int i= 0;i<repeatNum;i++){
      list.add(sc.nextInt());
    }
    int result = 0;
    int temp=0;
    for(int j= 0;j<repeatNum;j++){
      temp= list.get(j) - sc.nextInt();
      if(temp>0){
        result+=temp;
      }
    }
    System.out.println(result);
  }
}
/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