Conveniently, the colored squares are reflected in the call graph, making it easy to correlate timings with the sequence of events.

在调用图表中使用有颜色的方块反映图表内容，这非常方便，能够很容易地将事件序列与其花费的时间关联起来。

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A proper edge coloring of a graph is called an adjacent strong edge coloring if no two of its adjacent vertices are incident with edges colored by the same set of colors.

如果在一个图的正常边着色中，相邻两点关联的边集所着的颜色集合不同，则称此正常边着色为相邻强边着色。

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