#include<bits/stdc++.h>
using namespace std;
using Int = long long;
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}

//INSERT ABOVE HERE
signed main(){
  Int x,y;
  cin>>x>>y;

  using P = pair<Int, Int>;
  map<Int, set<P> > sp;
  
  for(Int i=0;i*i<=y;i++){
    for(Int j=0;i*i+j*j<=y;j++){
      sp[i*i+j*j].emplace(i,j);
      sp[i*i+j*j].emplace(i,-j);
      sp[i*i+j*j].emplace(-i,j);
      sp[i*i+j*j].emplace(-i,-j);
    }
  }  

  Int ans=0;
  for(Int i=x;i<=y;i++)
    chmax(ans,(Int)sp[i].size());

  cout<<ans<<endl;
  return 0;
}