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

#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define repi(i,a,b) for(int i=(int)(a);i<(int)(b);i++)
#define all(x) (x).begin(),(x).end()
#define foreach(u,v) for(auto (u) : (v))
#define pb push_back
#define mp make_pair
#define mt make_tuple

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<ll, ll> pll;
typedef vector<ll> vl;

const int inf = 1e9;
const ll linf = 1LL<<60;
const ll mod = 1e9 + 7;
const double eps = 1e-9;

/*
*/

int cnt[10000000];

int main()
{
  int x, y;
  cin >> x >> y;

  int r = sqrt(y);
  repi(i, -r, r+1) repi(j, -r, r+1){
    if(i*i + j*j <= y) cnt[i*i+j*j]++;
  }

  int ans = 0;
  repi(i, x, y+1) ans = max(ans, cnt[i]);
  cout << ans << endl;

  return 0;
}