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

int main(){
    // 入力
    int x, y;
    cin >> x >> y;

    // 判定して答えを出力
    if(x == 0 && y == 0){
        cout << 0 << endl;
    }
    else if(x == y || x == -y || x == 0 || y == 0) {
        cout << 1 << endl;
    }
    else{
        cout << 2 << endl;
    }
}