use std::io::Write;
use std::collections::*;

type Map<K, V> = BTreeMap<K, V>;
type Set<T> = BTreeSet<T>;
type Deque<T> = VecDeque<T>;

fn run() {
    input! {
        n: usize,
        m: usize,
        e: [(usize1, usize1); m],
    }
    let mut g = vec![vec![]; n];
    for (a, b) in e {
        g[a].push(b);
    }
    let mut ans = vec![];
    let mut elem = vec![false; n];
    for i in 0..n {
        elem[i] = true;
        let mut pos = i;
        let mut edge: Vec<(usize, usize)> = vec![];
        loop {
            if let Some(b) = g[pos].pop() {
                if elem[b] {
                    while let Some(e) = edge.pop() {
                        elem[e.1] = false;
                        if e.0 == b {
                            break;
                        }
                    }
                } else {
                    edge.push((pos, b));
                    elem[b] = true;
                }
                pos = b;
            } else if edge.len() > 0 {
                let e = edge.pop().unwrap();
                elem[e.1] = false;
                ans.push(e);
                pos = e.0;
            } else {
                break;
            }
        }
        elem[i] = false;
    }
    let out = std::io::stdout();
    let mut out = std::io::BufWriter::new(out.lock());
    writeln!(out, "{} {}", n, ans.len()).ok();
    for (a, b) in ans {
        writeln!(out, "{} {}", a + 1, b + 1).ok();
    }
}

fn main() {
    run();
}

// ---------- begin input macro ----------
// reference: https://qiita.com/tanakh/items/0ba42c7ca36cd29d0ac8
#[macro_export]
macro_rules! input {
    (source = $s:expr, $($r:tt)*) => {
        let mut iter = $s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
    ($($r:tt)*) => {
        let s = {
            use std::io::Read;
            let mut s = String::new();
            std::io::stdin().read_to_string(&mut s).unwrap();
            s
        };
        let mut iter = s.split_whitespace();
        input_inner!{iter, $($r)*}
    };
}

#[macro_export]
macro_rules! input_inner {
    ($iter:expr) => {};
    ($iter:expr, ) => {};
    ($iter:expr, $var:ident : $t:tt $($r:tt)*) => {
        let $var = read_value!($iter, $t);
        input_inner!{$iter $($r)*}
    };
}

#[macro_export]
macro_rules! read_value {
    ($iter:expr, ( $($t:tt),* )) => {
        ( $(read_value!($iter, $t)),* )
    };
    ($iter:expr, [ $t:tt ; $len:expr ]) => {
        (0..$len).map(|_| read_value!($iter, $t)).collect::<Vec<_>>()
    };
    ($iter:expr, chars) => {
        read_value!($iter, String).chars().collect::<Vec<char>>()
    };
    ($iter:expr, bytes) => {
        read_value!($iter, String).bytes().collect::<Vec<u8>>()
    };
    ($iter:expr, usize1) => {
        read_value!($iter, usize) - 1
    };
    ($iter:expr, $t:ty) => {
        $iter.next().unwrap().parse::<$t>().expect("Parse error")
    };
}
// ---------- end input macro ----------