You try to touch the ceiling. At first, you can't touch it though. To move, use your left and right arrow keys. To jump, use your left and right arrow keys. You DO NOT want to touch the red lines. If you do, the game ends. Try to touch the green lines. If you do your jumping power increases. When your jumping power equals 100, you can touch the ceiling.
Thanks to Faye and Alec who taught me how to program. In comments tell me your score!