07-14

Codeforces 1368E - Ski Accidents

07-07

2019大数据研究中心夏令营上机考试题解

07-07

2018大数据研究中心夏令营上机考试题解

06-30

Codeforces 1363E - Tree Shuffling

05-09

Codeforces 1345D - Monopole Magnets

05-07

Codeforces 1342E - Placing Rooks

04-26

Codeforces 1341F - Nastya and Time Machine

04-24

Codeforces 1341E - Nastya and Unexpected Guest