ll h;

int dist(ll x, ll y){
    return x*x+y*y;
}
ll m[10000010],X,Y;
{
    int X,Y,best=0;
    rd(X,Y);
    h = float(sqrt(Y))+1;
    REP(i,h) REP(j,h) m[dist(i,j)]++;
    REP(i,X,Y+1) best=max(best,m[i]);
    wt(best);
}