Combinatorial (most) optimization problems are a type of optimization problems. Optimization problems seem to naturally fall into two categories: one is the problem of continuous variables, and the other is the problem of discrete variables. The problem with discrete variables is called combined. In the problem of continuous variables, it is generally to find a set of real numbers, or a function; in the combination problem, it is to find an object from an infinite set or countable infinite set-typically an integer, a set, a Arrange, or a picture. Generally, these two types of problems have quite different characteristics, and the methods for solving them are also very different.
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