#include <iostream>
#include <cmath>

int main() {
    int Gx, Gy;
    std::cin >> Gx >> Gy;

    if (Gx == 0 && Gy == 0) {
        std::cout << 0 << std::endl;
    } else if (Gx == 0 || Gy == 0) {
        std::cout << 1 << std::endl;
    } else if (std::abs(Gx) == std::abs(Gy)) {
        std::cout << 1 << std::endl;
    } else {
        std::cout << 2 << std::endl;
    }

    return 0;
}