import java.util.Scanner;

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[] C = new int [N];
        int[] P = new int [N];
        int t = 0;

        for(int i=0;i<N;i++){
            V[i] = sc.nextInt();
        }
        
        for(int i=0;i<N;i++){
            C[i] = sc.nextInt();
        }
        
        for(int i=0;i<N;i++){
            P[i] = V[i]-C[i];
        
            if(P[i]>0) {
            	t+=P[i];
            }
        }

        System.out.print(t);
        sc.close();
    }
}
/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