import java.util.*;

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

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