

import java.util.Scanner;

public class Main {

	public static void main(String args[])
	{
		Scanner scan=new Scanner(System.in);
		int n=scan.nextInt();
		int v[]=new int[n];
		int c[]=new int[n];
		for(int i=0;i<n;i++)
		{
			v[i]=scan.nextInt();
			

		}
		for(int i=0;i<n;i++)
		{
			c[i]=scan.nextInt();
		}
		long sum=0;
		for(int i=0;i<n;i++)
		{
			if(v[i]>c[i])
			{
				sum+=(v[i]-c[i]);
			}
		}
		System.out.println(sum);
	}
}

/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