typedef int ll;
#include <bits/stdc++.h>
using namespace std;
int main() {
    ll x,y;
    std::cin >> x>>y;

    // unordered_map<ll,ll> cou;
    int cou[10000001];
    ll sq = (int)sqrt(y);
    
    for (ll i = 1; i <= sq; i++) {
        for (ll j = 0; j <= sq; j++) {
            cou[i*i+j*j]++;
        }
    }
    ll result = -1;
    for (ll i = x; i <= y; i++) {
        result = max(result,cou[i]);
    }
    std::cout << result*4 << std::endl;
}