#include <bits/stdc++.h>
typedef long long ll;
using namespace std;
#define all(x) (x).begin(), (x).end()
#define MOD 1000000007

int main() {
    ll x, y;
    cin >> x >> y;
    map<ll, ll> mp;
    for(int i = -3163; i <= 3163; i++) {
        for(int j = -3163; j <= 3163; j++) {
            if(x <= i * i + j * j && i * i + j * j <= y) {
                mp[i * i + j * j]++;
            }
        }
    }
    ll ans = 0;
    for(auto e : mp) {
        ans = max(ans, e.second);
    }
    cout << ans << endl;
}