 leaving the entire game in &quot;high card wins&quot; mode, or she can even invoke the option right away, making the entire game follow the &quot;low card wins&quot; rule.<br />
<br />
Given that Bessie can predict the order in which Elsie will play her cards, please determine the maximum number of points Bessie can win.</p>
<p></p>
<p>奶牛Bessie和Elsie在玩一种卡牌游戏。一共有2N张卡牌，点数分别为1到2N，每头牛都会分到N张卡牌。</p>
<p>游戏一共分为N轮，因为B