import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  }
} import java.util.*; util.* java public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  }
} Main public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  } main {
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  } Scanner sc=new Scanner(System.in); sc new Scanner(System.in) final int N=sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] x=new int[N]; x new int[N] N int[] y=new int[N]; y new int[N] N int sum=0; sum 0 for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    } int i=0; int i=0; i 0 i<N i N i++ i++ i {
      x[i]=sc.nextInt();
    } {
      x[i]=sc.nextInt();
    } x[i]=sc.nextInt() x[i] x i sc.nextInt() sc.nextInt sc for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    } int i=0; int i=0; i 0 i<N i N i++ i++ i {
      y[i]=sc.nextInt();
    } {
      y[i]=sc.nextInt();
    } y[i]=sc.nextInt() y[i] y i sc.nextInt() sc.nextInt sc for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    } int i=0; int i=0; i 0 i<N i N i++ i++ i {
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    } {
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    } if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      } x[i]>=y[i] x[i] x i y[i] y i {
        sum+=x[i]-y[i];
      } sum+=x[i]-y[i] sum x[i]-y[i] x[i] x i y[i] y i System.out.println(sum) System.out.println System.out System System.out sum String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  }
} Main
import java.util.*;

public class Main{
  public static void main(String[] args){
    Scanner sc=new Scanner(System.in);
    final int N=sc.nextInt();
    int[] x=new int[N];
    int[] y=new int[N];
    int sum=0;
    for(int i=0;i<N;i++){
      x[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      y[i]=sc.nextInt();
    }
    for(int i=0;i<N;i++){
      if(x[i]>=y[i]){
        sum+=x[i]-y[i];
      }
    }
    System.out.println(sum);
  }
}