import java.util.Scanner;

public class Main{

	public static void main(String[] args) {

		Scanner scan = new Scanner(System.in);

		int n = Integer.parseInt(scan.nextLine());
		String[] value = scan.nextLine().split(" ");
		String[] cost = scan.nextLine().split(" ");

		int ans = 0;


		for(int i = 0; i < n; i++) {

			int temp = Integer.parseInt(value[i]) - Integer.parseInt(cost[i]);

			ans = temp > 0 ? ans + temp : ans;
		}


		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