#include <bits/stdc++.h>
using namespace std;
int main() {
    int x, y; cin >> x >> y;
    vector<long long> v(y+1, 0);
    for (int i = 0; i * i <= y; i++) {
        for (int j = 1; j * j <= y; j++) {
            if (i*i+j*j > y) break;
            v[i*i+j*j]++;
        }
    }
    long long ans = 0;
    for (int i = x; i <= y; i++) {
        ans = max(ans, v[i]);
    }
    cout << ans * 4 << endl;
    return 0;
}