CF1436E Complicated Computations

10-25

CF1389F Bicolored Segments

08-01

CF1379F2 Chess Strikes Back (hard version)

07-20

CF377D-Developing Game

05-19

1348F - Phoenix and Memory

05-08

CF1141F Please, another Queries on Array?

04-20

CF1326E. Bombs

03-20

CF1316 F - Battalion Strength

03-01

CF1295E Permutation Separation

02-03

HDU6039 Gear Up

10-01