import java.util.Scanner;
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 ans=0;
        for(int i=0;i<n;i++)V[i] = sc.nextInt();
        for(int i=0;i<n;i++){
            C[i] = sc.nextInt();
            if((V[i]-C[i]) > 0){
                ans += (V[i]-C[i]);
            }
        }
        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