import java.util.Scanner;


public class Main {

    public static void main(String[] args) throws Exception
    {
        Scanner in = new Scanner(System.in);
        int n = in.nextInt();
        int k = in.nextInt();

        int count = k-1;
        for (int i = 0; i < k; i++)
        {
            int m = in.nextInt();

            int x = in.nextInt();
            if (x == 1)
            {
                boolean flag = true;
                for (int j = 1; j < m; j++) {
                    int y = in.nextInt();
                    if ((flag) && ((y - x) != 1)) {
                        count += (m - j) * 2;
                        flag = false;
                    }
                    x = y;
                }
            }
            else
                count += (m - 1) * 2;
        }
        System.out.println(count);

    }
}