import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    }

    static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io import java.util.HashMap; HashMap java.util import java.util.StringTokenizer; StringTokenizer java.util public class Main {
    public static void main(String[] args) {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    }

    static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
} Main public static void main(String[] args) {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    } main {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    } FastReader fs = new FastReader(); fs new FastReader() int snuke = fs.nextInt(); snuke fs.nextInt() fs.nextInt fs int snack = fs.nextInt(); snack fs.nextInt() fs.nextInt fs HashMap<Integer,Integer> owners = new HashMap<>(); owners new HashMap<>() for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        } int i=1; int i=1; i 1 i<=snack i snack i++ i++ i {
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        } {
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        } int di = fs.nextInt(); di fs.nextInt() fs.nextInt fs for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            } int j = 1; int j = 1; j 1 j <= di j di j++ j++ j {
                owners.put(fs.nextInt(),0);
            } {
                owners.put(fs.nextInt(),0);
            } owners.put(fs.nextInt(),0) owners.put owners fs.nextInt() fs.nextInt fs 0 System.out.println((snuke-owners.keySet().size())) System.out.println System.out System System.out (snuke-owners.keySet().size()) snuke owners.keySet().size() owners.keySet().size owners.keySet() owners.keySet owners String[] args args static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    } FastReader BufferedReader br; br StringTokenizer st; st public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        } FastReader {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        } br = new BufferedReader(new
                    InputStreamReader(System.in)) br new BufferedReader(new
                    InputStreamReader(System.in)) String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } next {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        } while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            } try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                } catch (IOException e)
                {
                    e.printStackTrace();
                } IOException e {
                    e.printStackTrace();
                } e.printStackTrace() e.printStackTrace e {
                    st = new StringTokenizer(br.readLine());
                } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt()
        {
            return Integer.parseInt(next());
        } nextInt {
            return Integer.parseInt(next());
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong()
        {
            return Long.parseLong(next());
        } nextLong {
            return Long.parseLong(next());
        } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble()
        {
            return Double.parseDouble(next());
        } nextDouble {
            return Double.parseDouble(next());
        } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        } nextLine {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        } String str = ""; str "" try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            } catch (IOException e)
            {
                e.printStackTrace();
            } IOException e {
                e.printStackTrace();
            } e.printStackTrace() e.printStackTrace e {
                str = br.readLine();
            } str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
    public static void main(String[] args) {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    }

    static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
} public class Main {
    public static void main(String[] args) {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    }

    static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.StringTokenizer;

public class Main {
    public static void main(String[] args) {
        FastReader fs = new FastReader();

        int snuke = fs.nextInt();
        int snack = fs.nextInt();
        HashMap<Integer,Integer> owners = new HashMap<>();

        for(int i=1; i<=snack; i++){
            int di = fs.nextInt();
            for (int j = 1; j <= di; j++) {
                owners.put(fs.nextInt(),0);
            }
        }
        System.out.println((snuke-owners.keySet().size()));
    }

    static class FastReader
    {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(new
                    InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                try
                {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt()
        {
            return Integer.parseInt(next());
        }

        long nextLong()
        {
            return Long.parseLong(next());
        }

        double nextDouble()
        {
            return Double.parseDouble(next());
        }

        String nextLine()
        {
            String str = "";
            try
            {
                str = br.readLine();
            }
            catch (IOException e)
            {
                e.printStackTrace();
            }
            return str;
        }
    }
}
