Var
    CA,CB:Boolean;
    Q:Byte;
    O,T:Queue;
    max:Integer;
Begin
    CA:=false;
    CB:=false;
    Q:=2;
    max:=10;


Process 1

while true do
begin
    CA:=true;
1:
    if CB then
        if Q=1 then goto 1
        else
        begin
            CA:=false;
            while Q=2 do;
        end
    else
    begin
        if O.size() <> max then
            if T.size > 0 then
                O.add(T.peek())
        Q:=2;
        CA:=false;
    end
end;

Process 2

while true do
begin
    CB:=true;
2:
    if CA then
        if Q=2 then goto 2
        else
        begin
            CB:=false;
            while Q=1 do;
        end
    else
    begin
        if O.size() > 0 then
            O.pop();
        Q:=1;
        CB:=false;
    end
end;