#include <bits/stdc++.h>
#define rep(i,n) for(int i = 0; i < (int)(n); i++)
#define rrep(ri,n) for(int ri = (int)(n-1); ri >= 0; ri--)
#define rep2(i,x,n) for(int i = (int)(x); i < (int)(n); i++)
#define repit(itr,x) for(auto itr = x.begin(); itr != x.end(); itr++)
#define rrepit(ritr,x) for(auto ritr = x.rbegin(); ritr != x.rend(); ritr++)
#define ALL(n) begin(n), end(n)
using ll = long long;
using namespace std;

//点と直線　垂線が線分上に無い場合考慮外
double di(double x, double y, double x1, double x2, double y1, double y2){
	double d;
	double ax = y2- y1, ay = x1-x2, ac = (x2-x1)*y1 - (y2-y1)*x1;
	d = fabs(ax*x + ay*y + ac);
	d /= sqrt((ax*ax) + (ay*ay));
	return d;
}

int main(){
	int d1, d2;
	cin >> d1 >> d2;
	double d = di(0, 0, sqrt(d2), 0, 0, sqrt(d2));
	int ans;
	if(d < sqrt(d1)) ans = 8;
	else if(d > sqrt(d1)) ans = 0;
	else ans = 4;
	cout << ans << endl;
	return 0;
}