Packing the Golden Triangles

Did you know that the yummy golden triangle was introduced in India as early as 13th century ? By the way, I'm referring to the popular South Asian snack, Samosa. I guess its hard to code while thinking of Samosa, especially if you are very hungry now ; so lets not get in to any recipe or eating game. You have N boxes of Samosas, where each box is a cube. To pack a box, you need to use a rubber b