Knapsack gives you as input a set of objects such as these here and each object has a size and a value and those are both integer number, so you have an integer size and an integer value and we're soon going to do an example for this, and then, additionally, you have given a container and that container has a limited capacity, and that capacity again is an integer, and the question you're trying to answer with knapsack is actually very simple, you're trying to ask the question, 