// The main code is at the very bottom.

#[allow(unused_imports)]
use {
    lib::byte::ByteChar,
    std::cell::{Cell, RefCell},
    std::cmp::{
        self,
        Ordering::{self, *},
        Reverse,
    },
    std::collections::*,
    std::convert::identity,
    std::fmt::{self, Debug, Display, Formatter},
    std::io::prelude::*,
    std::iter::{self, FromIterator},
    std::marker::PhantomData,
    std::mem,
    std::num::Wrapping,
    std::ops::{Range, RangeFrom, RangeInclusive, RangeTo, RangeToInclusive},
    std::process,
    std::rc::Rc,
    std::thread,
    std::time::{Duration, Instant},
    std::{char, f32, f64, i128, i16, i32, i64, i8, isize, str, u128, u16, u32, u64, u8, usize},
};

#[allow(unused_imports)]
#[macro_use]
pub mod lib {
    pub mod byte {
        pub use self::byte_char::*;

        mod byte_char {
            use std::error::Error;
            use std::fmt::{self, Debug, Display, Formatter};
            use std::str::FromStr;

            #[derive(Clone, Copy, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
            #[repr(transparent)]
            pub struct ByteChar(pub u8);

            impl Debug for ByteChar {
                fn fmt(&self, f: &mut Formatter) -> fmt::Result {
                    write!(f, "b'{}'", self.0 as char)
                }
            }

            impl Display for ByteChar {
                fn fmt(&self, f: &mut Formatter) -> fmt::Result {
                    write!(f, "{}", self.0 as char)
                }
            }

            impl FromStr for ByteChar {
                type Err = ParseByteCharError;

                fn from_str(s: &str) -> Result<ByteChar, ParseByteCharError> {
                    match s.as_bytes().len() {
                        1 => Ok(ByteChar(s.as_bytes()[0])),
                        0 => Err(ParseByteCharErrorKind::EmptyStr.into()),
                        _ => Err(ParseByteCharErrorKind::TooManyBytes.into()),
                    }
                }
            }

            #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
            pub struct ParseByteCharError {
                kind: ParseByteCharErrorKind,
            }

            impl Display for ParseByteCharError {
                fn fmt(&self, f: &mut Formatter) -> fmt::Result {
                    f.write_str(match self.kind {
                        ParseByteCharErrorKind::EmptyStr => "empty string",
                        ParseByteCharErrorKind::TooManyBytes => "too many bytes",
                    })
                }
            }

            impl Error for ParseByteCharError {}

            #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug)]
            enum ParseByteCharErrorKind {
                EmptyStr,
                TooManyBytes,
            }

            impl From<ParseByteCharErrorKind> for ParseByteCharError {
                fn from(kind: ParseByteCharErrorKind) -> ParseByteCharError {
                    ParseByteCharError { kind }
                }
            }
        }
    }

    pub mod io {
        pub use self::scanner::*;

        mod scanner {
            use std::io::{self, BufRead};
            use std::iter;
            use std::str::FromStr;

            #[derive(Debug)]
            pub struct Scanner<R> {
                reader: R,
                buf: String,
                pos: usize,
            }

            impl<R: BufRead> Scanner<R> {
                pub fn new(reader: R) -> Self {
                    Scanner {
                        reader,
                        buf: String::new(),
                        pos: 0,
                    }
                }

                pub fn next(&mut self) -> io::Result<&str> {
                    let start = loop {
                        match self.rest().find(|c| c != ' ') {
                            Some(i) => break i,
                            None => self.fill_buf()?,
                        }
                    };
                    self.pos += start;
                    let len = self.rest().find(' ').unwrap_or(self.rest().len());
                    let s = &self.buf[self.pos..][..len]; // self.rest()[..len]
                    self.pos += len;
                    Ok(s)
                }

                pub fn parse_next<T>(&mut self) -> io::Result<Result<T, T::Err>>
                    where
                        T: FromStr,
                {
                    Ok(self.next()?.parse())
                }

                pub fn parse_next_n<T>(&mut self, n: usize) -> io::Result<Result<Vec<T>, T::Err>>
                    where
                        T: FromStr,
                {
                    iter::repeat_with(|| self.parse_next()).take(n).collect()
                }

                pub fn map_next_bytes<T, F>(&mut self, mut f: F) -> io::Result<Vec<T>>
                    where
                        F: FnMut(u8) -> T,
                {
                    Ok(self.next()?.bytes().map(&mut f).collect())
                }

                pub fn map_next_bytes_n<T, F>(&mut self, n: usize, mut f: F) -> io::Result<Vec<Vec<T>>>
                    where
                        F: FnMut(u8) -> T,
                {
                    iter::repeat_with(|| self.map_next_bytes(&mut f))
                        .take(n)
                        .collect()
                }

                fn rest(&self) -> &str {
                    &self.buf[self.pos..]
                }

                fn fill_buf(&mut self) -> io::Result<()> {
                    self.buf.clear();
                    self.pos = 0;
                    let read = self.reader.read_line(&mut self.buf)?;
                    if read == 0 {
                        return Err(io::ErrorKind::UnexpectedEof.into());
                    }
                    if *self.buf.as_bytes().last().unwrap() == b'\n' {
                        self.buf.pop();
                    }
                    Ok(())
                }
            }
        }
    }
}

#[allow(unused_macros)]
macro_rules! eprint {
  ($($arg:tt)*) => {
    if cfg!(debug_assertions) {
      std::eprint!($($arg)*)
    }
  };
}
#[allow(unused_macros)]
macro_rules! eprintln {
  ($($arg:tt)*) => {
    if cfg!(debug_assertions) {
      std::eprintln!($($arg)*)
    }
  };
}
#[allow(unused_macros)]
macro_rules! dbg {
  ($($arg:tt)*) => {
    if cfg!(debug_assertions) {
      std::dbg!($($arg)*)
    } else {
      ($($arg)*)
    }
  };
}

const CUSTOM_STACK_SIZE_MIB: Option<usize> = Some(128);
const INTERACTIVE: bool = false;

fn main() -> std::io::Result<()> {
    match CUSTOM_STACK_SIZE_MIB {
        Some(stack_size_mib) => std::thread::Builder::new()
            .name("run_solver".to_owned())
            .stack_size(stack_size_mib * 1024 * 1024)
            .spawn(run_solver)?
            .join()
            .unwrap(),
        None => run_solver(),
    }
}

fn run_solver() -> std::io::Result<()> {
    let stdin = std::io::stdin();
    let reader = stdin.lock();
    let stdout = std::io::stdout();
    let writer = stdout.lock();
    macro_rules! with_wrapper {
    ($($wrapper:expr)?) => {{
      let mut writer = $($wrapper)?(writer);
      solve(reader, &mut writer)?;
      writer.flush()
    }};
  }
    if cfg!(debug_assertions) {
        with_wrapper!()
    } else if INTERACTIVE {
        with_wrapper!(std::io::LineWriter::new)
    } else {
        with_wrapper!(std::io::BufWriter::new)
    }
}

fn solve<R, W>(reader: R, mut writer: W) -> std::io::Result<()>
    where
        R: BufRead,
        W: Write,
{
    let mut _scanner = lib::io::Scanner::new(reader);
    #[allow(unused_macros)]
    macro_rules! scan {
    ($T:ty) => {
      _scanner.parse_next::<$T>()?.unwrap()
    };
    ($($T:ty),+) => {
      ($(scan!($T)),+)
    };
    ($T:ty; $n:expr) => {
      _scanner.parse_next_n::<$T>($n)?.unwrap()
    };
    ($($T:ty),+; $n:expr) => {
      iter::repeat_with(|| -> std::io::Result<_> { Ok(($(scan!($T)),+)) })
        .take($n)
        .collect::<std::io::Result<Vec<_>>>()?
    };
  }
    #[allow(unused_macros)]
    macro_rules! scan_bytes_map {
    ($f:expr) => {
      _scanner.map_next_bytes($f)?
    };
    ($f:expr; $n:expr) => {
      _scanner.map_next_bytes_n($n, $f)?
    };
  }
    #[allow(unused_macros)]
    macro_rules! print {
    ($($arg:tt)*) => {
      write!(writer, $($arg)*)?
    };
  }
    #[allow(unused_macros)]
    macro_rules! println {
    ($($arg:tt)*) => {
      writeln!(writer, $($arg)*)?
    };
  }
    {
        let (n, k) = scan!(usize, usize);

        let mut set = HashSet::new();

        for _ in 0..k {
            let d = scan!(usize);
            for _i in 0..d {
                let add = scan!(usize);
                set.insert(add);
            }
        }

        let ans = n - set.len();
        
        println!("{}", ans);
    }
    Ok(())
}


Measured memory_bytes: 2284