Codeforces Round 908 (Div. 2)

比赛视频

https://www.bilibili.com/video/BV1nw411x7xH/?vd_source=9a4bbd69c77feaab80f2e4e19721de57

\(A. Secret Sport\)

https://codeforces.com/contest/1894/submission/231748875

\(B. Two Out of Three\)

https://codeforces.com/contest/1894/submission/231754216

\(C. Anonymous Informant\)

https://codeforces.com/contest/1894/submission/231772212

\(D. Neutral Tonality\)

大数据不要放solve里 喜提tle2
https://codeforces.com/contest/1894/submission/231782864