import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Eric
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    }

    static class BResale {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    }

    static class BResale {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out Scanner in = new Scanner(inputStream); in new Scanner(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) BResale solver = new BResale(); solver new BResale() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class BResale {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        }

    } BResale public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        } solve {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        } int n = in.nextInt(); n in.nextInt() in.nextInt in int[] v = new int[n]; v new int[n] n int[] c = new int[n]; c new int[n] n int[] diff = new int[n]; diff new int[n] n for (int i = 0; i < n; i++)
                v[i] = in.nextInt(); int i = 0; int i = 0; i 0 i < n i n i++ i++ i v[i] = in.nextInt(); v[i] = in.nextInt() v[i] v i in.nextInt() in.nextInt in for (int i = 0; i < n; i++)
                c[i] = in.nextInt(); int i = 0; int i = 0; i 0 i < n i n i++ i++ i c[i] = in.nextInt(); c[i] = in.nextInt() c[i] c i in.nextInt() in.nextInt in int res = 0; res 0 for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            } int i = 0; int i = 0; i 0 i < n i n i++ i++ i {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            } {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            } diff[i] = v[i] - c[i] diff[i] diff i v[i] - c[i] v[i] v i c[i] c i if (diff[i] > 0)
                    res += diff[i]; diff[i] > 0 diff[i] diff i 0 res += diff[i] res diff[i] diff i out.println(res) out.println out res int testNumber testNumber Scanner in in PrintWriter out out public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    }

    static class BResale {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    }

    static class BResale {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 *
 * @author Eric
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BResale solver = new BResale();
        solver.solve(1, in, out);
        out.close();
    }

    static class BResale {
        public void solve(int testNumber, Scanner in, PrintWriter out) {
            int n = in.nextInt();
            int[] v = new int[n];
            int[] c = new int[n];
            int[] diff = new int[n];
            for (int i = 0; i < n; i++)
                v[i] = in.nextInt();
            for (int i = 0; i < n; i++)
                c[i] = in.nextInt();

            int res = 0;
            for (int i = 0; i < n; i++) {
                diff[i] = v[i] - c[i];
                if (diff[i] > 0)
                    res += diff[i];
            }
            out.println(res);
        }

    }
}

