如图，地图上有A，B，C，D四个国

如图，地图上有A，B，C，D四个国家，现用五种颜色给地图染色，要使相邻国家的颜色不相同，有5X4t,?8I-S5K5U,q*{种不同染色方法。7^0v:W2t9l'c'a3d2P*U

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