#![allow(unused_imports)]

#[macro_use]
mod _input {
    use std::fmt;
    use std::io::{self, Read};
    use std::str::{self, FromStr};

    macro_rules! input {
        ($($name:ident : $t:tt), *,) => {
            input!($($name: $t),*)
        };
        ($($name:ident : $t:tt), *) => {
            let ($($name, )*) = {
                let mut _scanned = ::_input::Scanned::new(::std::io::stdin(), 1024);
                $(let $name = _read_value!(_scanned, $t);)*
                ($($name, )*)
            };
            $(let _ = &$name;)*
        };
    }

    macro_rules! _read_value {
        ($scanned:expr, ($($t:tt), *)) => {
            ($(_read_value!($scanned, $t)), *)
        };
        ($scanned:expr, [$t:tt; $n:expr]) => {
            (0..$n).map(|_| _read_value!($scanned, $t)).collect::<Vec<_>>()
        };
        ($scanned:expr, _bytes) => {
            _read_value!($scanned, String).into_bytes()
        };
        ($scanned:expr, _index) => {
            _read_value!($scanned, usize) - 1
        };
        ($scanned:expr, $t:ty) => {
            $scanned.next::<$t>()
        };
    }

    #[derive(Default)]
    pub struct Scanned {
        buf: Vec<u8>,
        pos: usize,
    }

    impl Scanned {
        pub fn new<R: Read>(mut input: R, estimated: usize) -> Self {
            let mut buf = Vec::with_capacity(estimated);
            let _ = io::copy(&mut input, &mut buf).unwrap();
            // if buf.last() != Some(&b'\n') {
            //     buf.push(b'\n');
            // }
            // assert!(buf.iter().all(|&b| b <= 0x7f));
            Scanned { buf: buf, pos: 0 }
        }

        #[inline]
        pub fn next<T: FromStr>(&mut self) -> T
        where
            T::Err: fmt::Debug,
        {
            let mut start = None;
            loop {
                match (self.buf[self.pos], start.is_some()) {
                    (b' ', true) | (b'\n', true) => break,
                    (_, true) | (b' ', false) | (b'\n', false) => self.pos += 1,
                    (_, false) => start = Some(self.pos),
                }
            }
            let target = &self.buf[start.unwrap()..self.pos];
            unsafe { str::from_utf8_unchecked(target) }.parse().unwrap()
        }
    }
}

#[allow(dead_code)]
mod output {
    use std::io::{self, BufWriter, StdoutLock, Write as _Write};

    pub fn with_stdout<F: FnOnce(&mut BufWriter<StdoutLock>)>(f: F) {
        let stdout = io::stdout();
        let mut stdout = BufWriter::new(stdout.lock());
        f(&mut stdout);
        stdout.flush().unwrap();
    }
}

use std::collections::{BTreeMap, BTreeSet, BinaryHeap, HashMap, HashSet, VecDeque};
use std::io::Write;
use std::ops::{
    Add, AddAssign, BitAnd, BitAndAssign, BitOr, BitOrAssign, BitXor, BitXorAssign, Div, DivAssign,
    Mul, MulAssign, Neg, Not, Rem, RemAssign, Sub, SubAssign,
};
use std::str::{self, FromStr};
use std::{char, cmp, f32, f64, fmt, i16, i32, i64, i8, thread, u16, u32, u64, u8};

fn main() {
    input! {
        h: usize,
        w: usize,
        a: [[u8; w]; h],
    }
    let mut a = a;
    let mut ms = Vec::<(usize, usize, usize, usize)>::new();

    for i in 0..h {
        let mut pushed_to_last = false;
        let js = (0..w).filter(|&j| a[i][j] % 2 == 1).collect::<Vec<_>>();
        let n = js.len();
        for k in 0..n / 2 {
            let (j1, j2) = (js[2 * k], js[2 * k + 1]);
            for j in j1..j2 {
                ms.push((i, j, i, j + 1));
                if j + 1 == w - 1 {
                    pushed_to_last = true;
                }
            }
        }
        if n % 2 == 1 {
            for j in js[n - 1]..w - 1 {
                ms.push((i, j, i, j + 1));
                pushed_to_last = true;
            }
        }
        if pushed_to_last {
            a[i][w - 1] += 1;
        }
    }

    let j = w - 1;
    let is = (0..h).filter(|&i| a[i][j] % 2 == 1).collect::<Vec<_>>();
    let n = is.len();
    for k in 0..n / 2 {
        let (i1, i2) = (is[2 * k], is[2 * k + 1]);
        for i in i1..i2 {
            ms.push((i, j, i + 1, j));
        }
    }

    {
        let mut s = HashSet::new();
        for m in &ms {
            if !s.insert(m) {
                panic!("{:?}", m);
            }
        }
    }

    output::with_stdout(|out| {
        writeln!(out, "{}", ms.len()).unwrap();
        for (y1, x1, y2, x2) in ms {
            let (y1, x1, y2, x2) = (y1 + 1, x1 + 1, y2 + 1, x2 + 1);
            writeln!(out, "{} {} {} {}", y1, x1, y2, x2).unwrap();
        }
    });
}


Measured memory_bytes: 16436