《Crystaline》是最像视频游戏的一个程序，一个采水晶的迷宫自然地让你想到Katamari Damacy（一款视频游戏）。
"Crystalline" is the most video-game-like of the apps, a maze of catching crystals that happily brings to mind Katamari Damacy.
出于这个目的他们需要一个程序来计算迷宫内墙壁的面积。
For this purpose they need a program to calculate the square of the walls inside the labyrinth.
扩展应用是利用程序中已有的组件，实现新的功能，比如八皇后和迷宫求解。
Extension applications are already in use program components, to finish new features, such as the eight queens and maze solving.
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