#include <iostream>
#include <cmath> // for std::abs

int main() {
    long long gx, gy; // 使用 long long 来存储 G_x 和 G_y
    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;
}