import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        List<Integer> valueList = new ArrayList<>();
        for (int i=0; i<n; i++){
            valueList.add(sc.nextInt());
        }
        List<Integer> costList = new ArrayList<>();
        for (int i=0; i<n; i++){
            costList.add(sc.nextInt());
        }

        int totalBenefit = 0;

        for (int i=0; i<n; i++){
            int benefit = valueList.get(i) - costList.get(i);
            if (benefit > 0){
                totalBenefit += benefit;
            }
        }

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