#include<bits/stdc++.h>
using namespace std;

int main(){
    int Gx, Gy;
    cin >> Gx >> Gy;
    if(Gx == 0 && Gy == 0){
        cout << 0;
    }
    else if((Gx == 0 || Gy == 0) || (abs(Gx) == abs(Gy))){
        cout << 1;
    }
    else{
        cout << 2;
    }
}