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Knapsack Definition

In the knapsack problem we are given a set of objects and the capacity of the knapsack. Each object has its size and value.

The goal is to choose a subset of objects of total size not exceeding the capacity, while maximizing the sum of the objects values.

There are two variants of this problem. In the knapsack 0/1 problem each object from the objects set can be chosen only once. In the second variant called knapsack unbounded problem, each object can be chosen many times.