import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        }
        System.out.println(ans);
    }
} import java.util.*; util.* java public class Main {
    public static void main(String[] args) throws Exception {
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        }
        System.out.println(ans);
    }
} Main public static void main(String[] args) throws Exception {
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        }
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[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 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] v i sc.nextInt() sc.nextInt sc for(int i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        } {
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        } c[i]=sc.nextInt() c[i] c i sc.nextInt() sc.nextInt sc if(v[i]>c[i])
                ans+=(v[i]-c[i]); v[i]>c[i] v[i] v i c[i] c i ans+=(v[i]-c[i]) ans (v[i]-c[i]) v[i] v i c[i] c 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) throws Exception {
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        }
        System.out.println(ans);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        }
        System.out.println(ans);
    }
} Main
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        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 i=0; i<n; i++){
            c[i]=sc.nextInt();
            if(v[i]>c[i])
                ans+=(v[i]-c[i]);
        }
        System.out.println(ans);
    }
}
