#include<bits/stdc++.h>
using namespace std;
using ll = long long;

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl
#define p_yes() p("Yes")
#define p_no() p("No")

const ll mod = 1e9 + 7;
const ll inf = 1e18;

ll F[10000010];

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    // input
    ll X, Y;
    cin >> X >> Y;

    FOR(x, 1, 3200){
        FOR(y, 0, 3200){
            ll R = x*x + y*y;
            if(X<=R && R<=Y){
                F[R]++;
            }
        }
    }

    ll ma = 0;
    FOR(i, X, Y+1){
        chmax(ma, F[i]);
    }

    p(ma * 4);
    
    return 0;
}