//  ____            _                  _                       _       _
// |  _ \ _   _ ___| |_    ___ _ __   | |_ ___ _ __ ___  _ __ | | __ _| |_ ___
// | |_) | | | / __| __|  / __| '_ \  | __/ _ \ '_ ` _ \| '_ \| |/ _` | __/ _ \
// |  _ <| |_| \__ \ |_  | (__| |_) | | ||  __/ | | | | | |_) | | (_| | ||  __/
// |_| \_\\__,_|___/\__|  \___| .__/___\__\___|_| |_| |_| .__/|_|\__,_|\__\___|
//                            |_| |_____|               |_|

//                                                     _        _ _ _____  ___
//                               _ __ ___   __ _ _ __ | |_ __ _/ / |___ / / _ \
//                              | '_ ` _ \ / _` | '_ \| __/ _` | | | |_ \| | | |
//                              | | | | | | (_| | | | | || (_| | | |___) | |_| |
//                              |_| |_| |_|\__,_|_| |_|\__\__,_|_|_|____/ \___/

//https://github.com/manta1130/Competitive_Programming_Template_Rust

#[macro_use]
mod input {

    use std;
    use std::io;

    const SPLIT_DELIMITER: char = ' ';

    #[macro_export]
    #[allow(unused_macros)]
    macro_rules! input {
    ( $($x:expr ),*) => {
        {
            let temp_str = input_line_str();
            let mut split_result_iter = temp_str.split_whitespace();
                $(
                let buf_split_result = split_result_iter.next();
                let buf_split_result = buf_split_result.unwrap();
                    ($x) = buf_split_result.parse().unwrap();
                )*
        }
    };
}

    #[allow(dead_code)]
    pub fn input_line_str() -> String {
        let mut s = String::new();
        io::stdin().read_line(&mut s).unwrap();
        s.trim().to_string()
    }

    #[allow(dead_code)]
    pub fn p<T>(t: T)
    where
        T: std::fmt::Display,
    {
        println!("{}", t);
    }

    #[allow(dead_code)]
    pub fn input_vector2d<T>(line: usize) -> Vec<Vec<T>>
    where
        T: std::str::FromStr,
    {
        let mut v: Vec<Vec<T>> = Vec::new();

        for _ in 0..line {
            let vec_line = input_vector();
            v.push(vec_line);
        }
        v
    }

    #[allow(dead_code)]
    pub fn input_vector<T>() -> Vec<T>
    where
        T: std::str::FromStr,
    {
        let mut v: Vec<T> = Vec::new();

        let s = input_line_str();
        let split_result = s.split(SPLIT_DELIMITER);
        for z in split_result {
            let buf = match z.parse() {
                Ok(r) => r,
                Err(_) => panic!("Parse Error"),
            };
            v.push(buf);
        }
        v
    }

    #[allow(dead_code)]
    pub fn input_vector_row<T>(n: usize) -> Vec<T>
    where
        T: std::str::FromStr,
    {
        let mut v = Vec::with_capacity(n);
        for _ in 0..n {
            let buf = match input_line_str().parse() {
                Ok(r) => r,
                Err(_) => panic!("Parse Error"),
            };
            v.push(buf);
        }
        v
    }

    pub trait ToCharVec {
        fn to_charvec(&self) -> Vec<char>;
    }

    impl ToCharVec for String {
        fn to_charvec(&self) -> Vec<char> {
            self.to_string().chars().collect::<Vec<_>>()
        }
    }
}

use input::*;

#[derive(PartialEq)]
enum Dir {
    Down,
    Left,
    Right,
}

fn main() {
    let (h, w): (usize, usize);
    input!(h, w);
    let mut table = vec![];
    for _ in 0..h {
        let r = input_vector::<usize>();
        table.push(r);
    }

    if w==1 && h==1{
        p(0);
        return;
    }

    let mut dir = if w == 1 { Dir::Down } else { Dir::Right };
    let mut x = 0;
    let mut y = 0;
    let mut output = Vec::new();

    while y < h {
        //println!("{} {}",x,y);
        if y == h - 1 && ((x == 0 && dir == Dir::Left) || (x == w - 1 && dir == Dir::Right)) {
            break;
        }
        let buf = match dir {
            Dir::Down => (x, y + 1),
            Dir::Right => (x + 1, y),
            Dir::Left => (x - 1, y),
        };
        if table[y][x] % 2 != 0 {
            table[y][x] -= 1;
            if buf.1 >=h || buf.0 >= w{
                break;
            }
            table[buf.1][buf.0] += 1;
            let output_string = format!("{} {} {} {}", y + 1, x + 1, buf.1 + 1, buf.0 + 1);
            output.push(output_string);
        }
        x = buf.0;
        y = buf.1;
        if w == 1 {
            continue;
        }
        if let Dir::Down = dir {
            if x == 0 {
                dir = Dir::Right;
            } else {
                dir = Dir::Left;
            }
        } else if (dir == Dir::Right && x == w - 1) || (dir == Dir::Left && x == 0) {
            dir = Dir::Down;
        }
    }

    p(output.len());
    for s in output {
        p(s);
    }
}


Measured memory_bytes: 13588