#include <bits/stdc++.h>
using namespace std;
#define REP(i,a,n) for(int i=(a); i<(int)(n); i++)
#define rep(i,n) REP(i,0,n)
#define FOR(it,c) for(__typeof((c).begin()) it=(c).begin(); it!=(c).end(); ++it)
#define ALLOF(c) (c).begin(), (c).end()
typedef long long ll;
typedef unsigned long long ull;

static const int MAXN = 10000005;
int cnt[MAXN];

int main(){
  int X, Y;
  cin >> X >> Y;

  vector<ll> v;
  ll p = 0;
  while(p*p < MAXN){
    v.push_back(p*p);
    p++;
  }

  rep(i,v.size()){
    rep(j,v.size()){
      int val = v[i] + v[j];
      if(val < MAXN){
        if(v[i] == 0 || v[j] == 0) cnt[val] += 2;
        else cnt[val] += 4;
      }
    }
  }
  
  int ret = 0;
  REP(i,X,Y+1){
    ret = max(ret, cnt[i]);
  }

  cout << ret << endl;
  
  return 0;
}