import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        
        Scanner sc = new Scanner(System.in);
        
        int 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 total = 0;
        for(int i = 0; i < N; i++){
            if( V[i] - C[i] > 0) total += (V[i] - C[i]);
        }
        
        System.out.println(total);
    }
}

/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