Now coloring the map becomes a logic puzzle.

现在给地图着色变成了一个逻辑难题。

As long as that's true, you can color the map in two colors, by alternating them around those points.

只要这一点成立，你就可以只用两种颜色给地图上色，方法是围绕这些点交替使用。

And now when we scroll out, we have a flat and solid colored map.

现在，当我们向外滚动时，我们会看到一张平坦的纯色地图。