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 ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    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 v[] = new int[n];
    int c[] = new int[n];
    int ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    System.out.println(ans);
  }
} 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 ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int v[] = new int[n];
    int c[] = new int[n];
    int ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    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 v[] = new int[n]; v new int[n] n int c[] = new int[n]; c new int[n] n int ans = 0; ans 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 j=0;j<n;j++){
      c[j] = sc.nextInt();
    } int j=0; int j=0; j 0 j<n j n j++ j++ j {
      c[j] = sc.nextInt();
    } {
      c[j] = sc.nextInt();
    } c[j] = sc.nextInt() c[j] c j sc.nextInt() sc.nextInt sc for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    } int k=0; int k=0; k 0 k<n k n k++ k++ k {
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    } {
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    } if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      } v[k] - c[k] >= 0 v[k] - c[k] v[k] v k c[k] c k 0 {
        ans += v[k] - c[k];
      } ans += v[k] - c[k] ans v[k] - c[k] v[k] v k c[k] c k 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 v[] = new int[n];
    int c[] = new int[n];
    int ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    System.out.println(ans);
  }
} 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 ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    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 v[] = new int[n];
    int c[] = new int[n];
    int ans = 0;
    for(int i=0;i<n;i++){
      v[i] = sc.nextInt();
    }
    for(int j=0;j<n;j++){
      c[j] = sc.nextInt();
    }
    for(int k=0;k<n;k++){
      if(v[k] - c[k] >= 0){
        ans += v[k] - c[k];
      }
    }
    System.out.println(ans);
  }
}