Doll

You are given a 2D array of integers `envelopes` where `envelopes[i] = [wi, hi]` represents the width and the height of an envelope. One envelope can ......

Description 354. Russian Doll Envelopes (Hard) You are given a 2D array of integers envelopes where envelopes[i] = [wi, hi] represents the width and t ......

CF1366E Chiori and Doll Picking 位运算和 __builtin 函数记得开 long long！！！！！ 这题很厉害。 记 $p(x) = \operatorname{popcount}(x)$，$\operatorname{span}(B)$ 表示 $B$ 张成的线性 ......