#include <bits/stdc++.h>
#include <atcoder/all>


using namespace std;
using namespace atcoder;
#define rep(i,m,n) for (int i = (int)(m); i < (int)(n); i++)
#define ll long long

int main(){

    ll x,y;
    cin >> x >> y ;
    vector<ll> m(10000001);
    ll v;
    rep(i,-3163,3163){
        rep(j,-3163,3163){
            v = i*i + j*j;
            if (v<=y){
            m[v]++;
            }}
    }
    ll ans = 0;
    rep(i,x,y+1){
        ans = max(ans,m[i]);
    };
    cout << ans << endl;
    return 0;

}