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Liu Bei was ready for a battle of the Yellow turban army, so he must choose a group of warriors in the battle. Combat troops need to have l
To the U warrior. Every warrior is a member of a clan, and some of the clans are hostile to each other. In the fighting forces,
No more than M's clans of the warriors are hostile to each other. The fighting force of the fighting forces is the fighting power of all the warriors in the army.
It is decided that the goal of the problem is to maximize the combat effectiveness of the fighting forces.