import java.util.*;

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[] sub = new int[n];
    int num = 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++){
      sub[i] = v[i] -c[i];
    }
    for(int i=0; i<n;i++){
      if(sub[i]>0){
        num += sub[i];
      }
    }
    System.out.println(num);
  }
}
/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