#include <bits/stdc++.h>

using namespace std;

using ll = long long;

const int MAXV = 10000000;
ll cnt[MAXV + 1];

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);
    for (int i = 0; i * i <= MAXV; i++) {
        for (int j = 0; j <= i; j++) {
            int sum = i * i + j * j;
            if (sum > MAXV) break;
            int add = (1 + (i != 0)) * (1 + (j != 0));
            if (i != j) add *= 2;
            cnt[sum] += add;
        }
    }

    int x, y;
    cin >> x >> y;
    ll ans = 0;
    for (int i = x; i <= y; i++) {
        ans = max(ans, cnt[i]);
    }
    cout << ans << endl;
    return 0;
}