Jul 17

Codeforces Round #654 (Div. 2) F. Raging Thunder

Jul 14

Codeforces Round #654 (Div. 2) E. Asterism

Jul 9

Codeforces Global Round 9 D. Replace by MEX

Oct 1

Codeforces Round #587 (Div. 3) F. Wi-Fi

Sep 6

Leetcode 4. Median of Two Sorted Arrays

Sep 1

Kick Start 2019 Round D

Aug 28

Leetcode 940. Distinct Subsequences II

Aug 27

Leetcode 1172. Dinner Plate Stacks

Aug 26

Kick Start 2019 Round E

Aug 25

2016保研题：魔法学校