#include <iostream>
using namespace std;

int cnt[10000001];
int X, Y;

int main() {
	cin >> X >> Y;
	
	int maxR = 0; while (maxR * maxR <= Y) maxR++; maxR--;
	for (int x = -maxR; x <= maxR; x++) {
		for (int y = -maxR; y <= maxR; y++) {
			if (x * x + y * y <= Y) {
				cnt[x * x + y * y]++;
			}
		}
	}
	
	int ans = 0;
	for (int i = X; i <= Y; i++) {
		if (ans < cnt[i]) {
			ans = cnt[i];
		}
	}
	cout << ans << endl;
	return 0;
}