import java.util.Scanner;

class Main {
    public static void main(String []args){
        Scanner in = new Scanner (System.in);
        int n = in.nextInt ();
        int[] arr = new int[n];
        int[] brr = new int[n];
        for(int i=0;i<n;i++){
            arr[i] = in.nextInt();
        }
        for(int i=0;i<n;i++){
            brr[i] = in.nextInt();
        }
        int max=0;
        for(int i=0;i<n;i++){
            if(arr[i]>brr[i])
                max+= arr[i]-brr[i];
        }
        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