import java.util.*;
import java.io.*;
import java.lang.*;

public class Main {
	public static void main (String[] args) {
		Scanner sc = new Scanner (System.in);
		int n = sc.nextInt();
		int[] v = new int[n];
		int[] p = new int[n];
		
		for (int i = 0; i<n; i++) {
			v[i] = sc.nextInt();
		}
		for (int i =0; i<n; i++) {
			p[i] = sc.nextInt();
		}

		int val = 0; 

		for (int i = 0;  i<n; i++) {
			if (v[i] > p[i]) {
				val += v[i] - p[i];
			}
		}
		System.out.println(val);
	}
}

/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