the room is a large portion of the sound you'll get when recording drums. to get good results you need to get the room sounding as good as possible, and that takes money. so i'm assuming that you don't want to or can't afford to properly address the acoustics in the room, so i'm going to offer a cheap-ass solution that may or may not make much of a difference.
simply put, if you can't make the room sound good to impart positive sound to the tracks, you need to take it as much out of the picture as possible.
there's nothing good about having a cement and wooden wall directly parallel from each other. the sound will just bounce back and forth. to avoid this, your cheapest solution would be to hang comforters or packing blankets on both the cement and wood walls.
egg cartons, sheets, and foam won't make much of a difference. you need mass. comforters and packing blankets are relatively heavy (and dense), and will give you the best results for cheap.
keep in mind i've never said "good" results.
hanging blankets on the walls will only go so far to making the room sound "less crappy"--it'll never sound "good" and you'll be forced to live with close-micing everything. but it'll be better than it was. for info on how to properly treat a room, visit the studio building forum.
cheers,
wade