求翻译：在近几年的信息学竞赛中，图论题目层出不穷。图论作为一个新生的数学分支，相比其他数学分支来说，具有许多自有的特性。利用图论解题，通常具有高效、简洁的便利。有了这门工具，并不意味就能很好地解决问题，还在于我们能否熟练地识别与建立一系列的图论模型。本文通过一些实例，简单地介绍一下图论建模的方法。是什么意思？

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In recent years, the competition in informatics theory topic map an endless stream. Map theory as a fledgling branch of mathematics, as compared with other mathematical branches since there is a lot of features. Use the graphic theory, usually have a highly-efficient, concise convenience. There is a

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Informatics competitions in recent years, endless stream of graph theory topics. The mathematical branch of graph theory as a freshman, when compared to other branches of mathematics, with many private properties. Using graph theory to solve problems, often have high efficiency, simple convenience.

In the informatics contest in recent years, pursue the proposition eye and emerge in an endless stream. Pursue the theory a new born mathematics branch, compare other mathematics branches and say, have a lot of own characteristics. Utilize pursuing the theory and solve a problem, usually have a high