#include<iostream>
#include<iomanip>
#include<vector>
#include<math.h>
#include<algorithm>
#include<map>
#include<queue>
#include<stack>
#include<deque>
#include<set>
#include<cmath>
#include<ctime>
#include<bitset>
#define rep(i,a,b) for(int i=a;i<=b;i++)
using namespace std;
using ll = long long;
using vec = vector<ll>;
using Graph = vector<vec>;
using Pair = pair<ll,ll>;

void debug1(vec v){for(auto x:v)cout << x << ' ';cout << endl;}
void debug2(vector<Pair> v){for(auto x:v)cout << '(' << x.first << ',' << x.second << ')' << endl;}
void debug3(Graph v){rep(i,0,v.size()-1)debug1(v[i]);cout << endl;}

int main(){
    ll gx,gy;
    cin >> gx >> gy;
    ll ans = 2;
    if(gx==0 and gy==0)ans = min(ans,(ll)0);
    if(!gx or !gy)ans = min(ans,(ll)1);
    if(abs(gx) == abs(gy))ans = min(ans,(ll)1);
    cout << ans << endl;
    
}