摘要：\(Mex\) 运算 \(mex(S)\) 为不属于集合 \(S\) 的最小非负整数，即： \(mex(S)=\min \limits_{x \in \mathbb{N},x \not\in S} \{x\}\) eg:\(mex(\{1,2,4,5\})=3,mex(\{\})=0\) 有向图游戏 阅读全文

摘要：描述 TT and FF are ... friends. Uh... very very good friends -________-b FF is a bad boy, he is always wooing TT to play the following game with him. Th 阅读全文