#![allow(
    dead_code,
    non_snake_case,
    unused_imports,
    unused_mut,
    unused_variables,
    while_true,
    unused_assignments,
    clippy::needless_range_loop,
    clippy::ptr_arg,
    clippy::type_complexity,
    clippy::unnecessary_cast
)]
use proconio::{input, marker::Usize1 as usize1, marker::Usize1 as us1};
use std::collections::{BinaryHeap, HashMap, HashSet, VecDeque};

fn sol() -> usize {
    input! {
      Gx: i64,
      Gy: i64,
    };

    // 0 or 1 or 2

    if Gx == 0 && Gy == 0 {
        return 0;
    }
    if Gx == 0 || Gy == 0 || Gx.abs() == Gy.abs() {
        return 1;
    }
    2
}

fn main() {
    let ans = sol();
    println!("{}", ans);
}