10 posts in total
2022
CF 1661D Progressions Covering(差分+线段树)
CF 1661C Water the Trees(思维)
CF 1665C Tree Infection(模拟 + 贪心)
CF 1656D K-good(思维)
CF 1654E Arithmetic Operations(枚举)
CF 1654C Alice and the Cake(模拟)
Codeforces Round 770 (Div.2) B.Fortune Telling
Codeforces Round 770 (Div.2) C.OKEA
2021
Palindromic Matrix
CF1118D2 Coffee and Coursework (Hard Version)(二分)