import java.util.Scanner;
public class Main {
    public static void main(String args[]) {
        Scanner s = new Scanner(System.in);
        int N = s.nextInt();
        int[] V = new int[N];
        int[] C = new int[N];
        for (int i = 0; i < N; i++) {
            V[i] = s.nextInt();
        }
        for (int i = 0; i < N; i++) {
            C[i] = s.nextInt();
        }
        int ans = 0;
        for (int i = 0; i < N; i++) {
            if (V[i] > C[i])
                ans += V[i] - C[i];
        }
        System.out.print(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