import java.util.*;

class Main
{
	public static void main(String[] args)
	{
		int N,X,Y,Ans=0;
		Scanner sc = new Scanner(System.in);
		N = sc.nextInt();
		int[] V = new int[N];
		int[] C = new int[N];
		for(int i=0;i<N;i++)
		{
			V[i] = sc.nextInt();
		}
		for(int i=0;i<N;i++)
		{
			C[i] = sc.nextInt();
		}
		int comp;
		for(int i=0;i<N;i++)
		{
			comp = V[i] - C[i];
			if(comp>0) Ans+=comp;
		}
		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