A knapsack is being loaded for a camping trip. This knapsack has a maximum weight-carrying limit and a maximum load size limit. The camper can choose from 4 different food items to put into the knapsack. The selected items must maximize the overall number calories and provide at least a minimum number of grams of protein while not exceeding the maximum load size and weight-carry capacity of the knapsack.

The knapsacks load cannot exceed a weight of 10 kilograms or a volume of 0.125 m³. The load of food items must contain at least 200 grams of protein.

The load may contain any number of each of the 4 following food items:

- Candy Bar

- Sandwich

- Can of Juice

- Apple

Specific information about each food items are as follows:

Object	Calories per Project	Protein (grams) per Object	Weight (kg) per Object	Volume (m^3) per Object
Candy Bar	90	5	0.25	0.0005
Sandwich	130	40	0.35	0.002
Juice Can	100	15	0.35	0.00075
Apple	40	3	0.3	0.0009
Total
* The knapsacks load cannot exceed a weight of 10 kilograms
** The knapsacks load cannot exceed a volume of 0.123 m^3
*** The load of food items must contain a least 200 grams of protein