摘要：
传送门：题面：LMY and YY are number theory lovers. They like to find and solve some interesting number theory problems together. One day, they be... 阅读全文
摘要：
传送门题面：Nash Equilibrium is an important concept in game theory. Rikka and Yuta are playing a simple matrix game. At the beginning of the ga... 阅读全文