#include <iostream>
#include <cstdio>
#include <vector>
#include <algorithm>
#include <utility>
#include <cmath>

using namespace std;

int main() {
	int x, y;

	cin >> x >> y;
	int len2 = x * x + y * y;
	double r = 0;
	while (r * r <= len2) {
		r += 0.5;
	}

	int ans = r * 2;
	cout << ans << endl;
	return 0;
}