#![allow(unused_imports,non_snake_case,dead_code)]
use std::{cmp::Reverse as Rev,collections::*,iter::*};
use proconio::{marker::*,*};


#[fastout]
fn main(){
    input!{
        x:i64,
        y:i64,
    }
    if (x,y)==(0,0){
        println!("0");
        return;
    }
    if x==0 || y==0 || x==y || x==-y{
        println!("1");
        return;
    }
    println!("2");
}