#include <bits/stdc++.h>
using namespace std;
//#include<atcoder/all>
//using namespace atcoder;
using ll = long long int;
using ull = unsigned long long int;
using ld = long double;
constexpr ll MAX = 2000000000000000000;
constexpr ld PI = 3.14159265358979;
constexpr ll MOD = 0;//2024948111;
ld dotorad(ld K){ return PI * K / 180.0; }
ld radtodo(ld K){ return K * 180.0 / PI; }
mt19937 mt;
void randinit(){ srand((unsigned)time(NULL));mt = mt19937(rand()); }
int main(){
    ll x,y;
    cin >> x >> y;
    if(x == 0 && y == 0){
        cout << 0 << endl;
        return 0;
    }
    if(x == 0 || y == 0 || x == y || x == -y){
        cout << 1 << endl;
        return 0;
    }
    cout << 2 << endl;
}