#include <assert.h>
#include <omp.h>

#include <algorithm>
#include <array>
// #include <atcoder/all>
#include <bitset>
#include <cmath>
#include <cstdint>
#include <deque>
#include <fstream>
#include <functional>
#include <iomanip>
#include <iostream>
#include <list>
#include <map>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <unordered_map>
#include <unordered_set>
#include <utility>
#include <vector>
using namespace std;
// using namespace atcoder;
using ll = long long;

int main() {
    ll x, y;
    cin >> x >> y;
    if (x == 0 && y == 0) {
        cout << 0 << endl;
    } else if (x == 0 || y == 0 || x == y || x == -y) {
        cout << 1 << endl;
    } else {
        cout << 2 << endl;
    }

    return 0;
}