#include <bits/stdc++.h>
#include <string>
#define ft first
#define sc second
#define pt(sth) cout << sth << "\n"
#define moca(a, s, b) a=((a)s(b)+MOD)%MOD
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
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;}
static const ll INF=1e18;
static const ll MAX=101010;
static const ll MOD=1e9+7;

/*
 for(i=0; i<N; i++)
   cin >> a[i];
*/


ll cnt[MAX*100]={};
int main(void) {
  ll i, j, k;
  
  ll X, Y;
  cin >> X >> Y;
  
  
  for(i=1; i<=sqrt(MAX*100); i++) {
    for(j=i; j<=sqrt(MAX*100); j++) {
      ll a=i*i+j*j;
      if(a<MAX*100) cnt[a]+=4*(1+(i!=j));
    }
  }
  
  for(i=0; i<MAX*100; i++) if((ll)sqrt(i)==sqrt(i)) cnt[i]+=4;
  
  ll ans=0;
  for(i=X; i<=Y; i++) chmax(ans, cnt[i]);
  pt(ans);
  
}