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Ivan plays a computer game that contains some microtransactions to make characters look cooler. Since Ivan wants his character to be really cool, he...

把先前信息低的两篇blog给拆了,这样好点.

无脑DP.设状态表示已经设置了位,用了个偶数,第位是偶数/奇数.然后

Today, as a friendship gift, Bakry gave Badawy n integers a1,a2,…,an and challenged him to choose an integer X such that the value max1≤i≤n(ai⊕X) is...

不要4，可以在4时直接不转移。对于62，可以维护一个上一个数字填了啥，就可以像4一样判断了。

Liaoning ship, which named after a province of China, is the first aircraft carrier commissioned into the Peoples Liberation Army Navy. It was bought...

额……其实就是爆搜模拟。但是状态比较多，需要记双方生命值，3个随从的生命，当前场数，魔力，体力，以及一些玄学优化。

1. 修改数列a的第i个为x 2. 修改数列b的第i个为x 3. 给出k，求最小的t，满足