1Cost = 4 2Pieces = 3 [0, 0, 0, 0, 1, 1, 1, 1] 4Items = 5 0 0 0 0 0 0 1 1 6 0 0 0 0 0 2 0 0 7 0 0 0 0 2 0 1 1 8 9---------- 10==========