阶梯倍投最佳方案

简介：(Li Sisi, as someone who has killed people, she doesn’t know it. And one day she may have to face a very difficult problem. If she makes up her own strength at this time, there will be many more ways to solve the problem. So Mo Xiaoqi and Bingxue are supervising and urging Li Sisi, and Li Sisi just wants to be lazy when she has nothing to do.)