use proconio::{fastout, input};

const DIRS: [(isize, isize); 4] = [(0, 1), (1, 0), (0, -1), (-1, 0)];

trait OrdExt {
    fn chmax(&mut self, other: Self) -> bool;
    fn chmin(&mut self, other: Self) -> bool;
}

impl<T: Ord> OrdExt for T {
    fn chmax(&mut self, other: Self) -> bool {
        if *self < other {
            *self = other;
            true
        } else {
            false
        }
    }

    fn chmin(&mut self, other: Self) -> bool {
        if *self > other {
            *self = other;
            true
        } else {
            false
        }
    }
}

#[fastout]
fn main() {
    input! {
        gx: isize,
        gy: isize,
    }

    if gx == 0 && gy == 0 {
        println!("0");
    } else if gx.abs() == gy.abs() {
        println!("1");
    } else if gx == 0 || gy == 0 {
        println!("1");
    } else {
        println!("2");
    }
}