var m,n,t,h,l,out:longint;
    as,bs:boolean;
procedure check;
var k,al,bl,ah,bh:longint;
begin
     k:=1;
     while sqr(k)<m do
           inc(k);
     ah:=k;
     k:=1;
     while sqr(k)<n do
           inc(k);
     bh:=k;
     h:=bh-ah;
     al:=sqr(ah)-m-ah+1;
     bl:=sqr(bh)-n-bh+1;
     l:=abs(al-bl);
     if odd(sqr(ah)-m) then
        as:=false
                       else
        as:=true;
     if odd(sqr(bh)-n) then
        bs:=false
                       else
        bs:=true;
end;
procedure make;
begin
     if as=bs then
        begin
             if l=0 then
                out:=h*2
                    else
                begin
                     if l<=h then
                        out:=2*h
                            else
                        begin
                             out:=l+h;
                        end;
                end;
        end
              else
        begin
             if as then
             begin
             if l>h then
                out:=l+h
                    else
                out:=2*(h-1)+l;
             end
                   else
             begin
             if l>h then
                out:=l+h
                    else
                out:=2*h+1;
             end;
        end;
     writeln(out);
end;
begin
     readln(m,n);
     if m>n then
        begin
             t:=m;
             m:=n;
             n:=t;
        end;
     check;
     make;
end.