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</html><description>1. Introduction One of the common problems that often appears in programming competitions or coding tests is to find the greatest common divisor (GCD) of two numbers. The greatest common divisor refers to the largest number that divides two natural numbers evenly. In this article, we will explain an algorithm to calculate the greatest common &hellip; &#xB354; &#xBCF4;&#xAE30; ""</description></oembed>
