import java.io.*;
import java.util.*;

public class Main {

    static MyScanner in;
    static PrintWriter out;
    //static Timer t = new Timer();

    public static void main(String[] args) throws IOException {
        in = new MyScanner();
        out = new PrintWriter(System.out, true);

        out.println(taskC());
    }

    static int taskC() throws IOException {
        int n = in.nextInt(), t = in.nextInt();

        int pieces = 0;
        for (int q = 0; q < t; q++) {
            int k = in.nextInt();
            int[] arr = in.nextInts(k);

            if (arr[0] == 1) {
                for (int i = 1; i < k; i++)
                    if (arr[i] != arr[i - 1] + 1) {
                        pieces += k - i;
                        break;
                    }
            } else
                pieces += k - 1;
        }

        return pieces * 2 + t - 1;
    }
}

//<editor-fold defaultstate="collapsed" desc="MyScanner">
class MyScanner {

    private final BufferedReader br;
    private StringTokenizer st;

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

    public MyScanner(String path) throws IOException {
        br = new BufferedReader(new FileReader(new File(path)));
        //br = new BufferedReader(new InputStreamReader(new FileInputStream(
        //new File(path)), "cp1251"));
    }

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

    boolean hasNext() {
        if (st != null && st.hasMoreElements())
            return true;

        try {
            while (st == null || !st.hasMoreElements())
                st = new StringTokenizer(br.readLine());
        }
        catch (Exception e) {
            return false;
        }

        return true;
    }

    String[] nextStrings(int n) throws IOException {
        String[] arr = new String[n];
        for (int i = 0; i < n; i++)
            arr[i] = next();
        return arr;
    }

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

    int[] nextInts(int n) throws IOException {
        int[] arr = new int[n];
        for (int i = 0; i < n; i++)
            arr[i] = nextInt();
        return arr;
    }

    int[][] next2Ints(int n, int m) throws IOException {
        int[][] arr = new int[n][m];
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                arr[i][j] = nextInt();
        return arr;
    }

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

    long[] nextLongs(int n) throws IOException {
        long[] arr = new long[n];
        for (int i = 0; i < n; i++)
            arr[i] = nextLong();
        return arr;
    }

    long[][] next2Longs(int n, int m) throws IOException {
        long[][] arr = new long[n][m];
        for (int i = 0; i < n; i++)
            for (int j = 0; j < m; j++)
                arr[i][j] = nextLong();
        return arr;
    }

    double nextDouble() throws IOException {
        return Double.parseDouble(next().replace(',', '.'));
    }

    double[] nextDoubles(int size) throws IOException {
        double[] arr = new double[size];
        for (int i = 0; i < size; i++)
            arr[i] = nextDouble();
        return arr;
    }

    boolean nextBool() throws IOException {
        String s = next();
        if (s.equalsIgnoreCase("true") || s.equals("1"))
            return true;

        if (s.equalsIgnoreCase("false") || s.equals("0"))
            return false;

        throw new IOException("Boolean expected, String found!");
    }
}
//</editor-fold>
