begin
  
  Arr(0).ForEach(i -> begin
    
    writeln(2, 3);
    begin
      writeln(2,
      3,
      4,
      5);
      writeln;
      Arr(0).ForEach(i -> begin
        sin(2);
      end);
    end;
    writeln;
    writeln;
  end);
  begin
    ww;
  end;
  writeln(2,
          sin(3,
          2),
          4);
  writeln(2
          + 3
          + 4);
end.