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 count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    }
} import java.util.*; util.* java 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 count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    }
} 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 count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    } main {
    	Scanner sc = new Scanner(System.in);
      int n = sc.nextInt();
      int[] v = new int[n];
      int[] c = new int[n];
      int count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int[] v = new int[n]; v new int[n] n int[] c = new int[n]; c new int[n] n int count = 0; count 0 for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      	v[i] = sc.nextInt();
      } {
      	v[i] = sc.nextInt();
      } v[i] = sc.nextInt() v[i] v i sc.nextInt() sc.nextInt sc for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      } {
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      } c[i] = sc.nextInt() c[i] c i sc.nextInt() sc.nextInt sc v[i] -= c[i] v[i] v i c[i] c i if(v[i] >= 0) count += v[i]; v[i] >= 0 v[i] v i 0 count += v[i] count v[i] v i System.out.println(count) System.out.println System.out System System.out count String[] args args 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 count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    }
} 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 count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    }
} Main
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 count = 0;
      for(int i = 0;i < n;i++){
      	v[i] = sc.nextInt();
      }
      for(int i = 0;i < n;i++){
      	c[i] = sc.nextInt();
        v[i] -= c[i];
        if(v[i] >= 0) count += v[i];
      }
      System.out.println(count);
      
      
    }
}