import java.util.*;

class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int juwelNum = sc.nextInt();

        int[] juwelValue = new int[juwelNum];
        for(int i = 0; i < juwelNum; i++){
            juwelValue[i] = sc.nextInt();
        }
        int[] juwelCost = new int[juwelNum];
        for(int i = 0; i < juwelNum; i++){
            juwelCost[i] = sc.nextInt();
        }

        int ans = 0;
        for(int i = 0; i < juwelNum; i++){
            if(juwelValue[i] > juwelCost[i]){
                ans += juwelValue[i] - juwelCost[i];
            }
        }

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