您可以同款项链,为经典造型添上一点色彩。
Combine them with the matching necklace for a classic look with a touch of colour.
它们的主要区别在于染色要求上:每一D-超边至少有两点异色,每一C-超边至少有两点同色。
The main difference between them is coloring requirements:every D-edge at least has two vertices colored differently, while every C-edge at least has two vertices of the same color.
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