#include <bits/stdc++.h>
using namespace std;
 
int main()
{
	long long Xp, Yp;
	cin >> Xp >> Yp;


	long long sq = Xp * Xp + Yp * Yp;
	long double ans = floor( sqrt( (double)sq ) ) * 2;
	for( ; (ans / 2) * (ans / 2) <= sq; ans++ ) ;

	cout << ans << endl;
}