import java.util.*;
public class Main {
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);

    int N = sc.nextInt();
    
    int[] value;
    value = new int[N];
    for( int i = 0 ; i < N ; i++ ){
      value[i] = sc.nextInt();
    }
    
    int[] cost;
    cost = new int[N];
    for( int i = 0 ; i < N ; i++ ){
      cost[i] = sc.nextInt();
    }
    
    int max = 0;
    for( int i = 0 ; i < N ; i++ ){
      if ( value[i] > cost[i] ){
        max += value[i] - cost[i] ;
      }
    }
    System.out.println(max);
    }
  }

/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