#include <iostream>
#include <cstdint>
#include <cmath>

using namespace std;

static inline constexpr uint32_t solve(const int32_t G_x, const int32_t G_y) noexcept
{
	if (G_x == 0)
	{
		if (G_y == 0)
			return 0;
		else
			return 1;
	}
	else if (G_y == 0)
		return 1;
	else if (abs(G_x) == abs(G_y))
		return 1;
	else
		return 2;
}

int main()
{
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	
	int32_t G_x, G_y;
	cin >> G_x >> G_y;

	cout << solve(G_x, G_y) << '\n';
	return 0;
}