2019
- 2019-12-13Codeforces Round 600 (Div. 2) - D. Harmonious Graph(并查集)
- 2019-11-23Codeforces Round 600 (Div. 2) - B. Silly Mistake(模拟)
- 2019-11-21Educational Codeforces Round 76 (Rated for Div. 2) - E. The Contest(dp)
- 2019-11-18Educational Codeforces Round 76 (Rated for Div. 2) - D. Yet Another Monster Killing Problem(贪心)
- 2019-11-02Codeforces Round 597 (Div. 2) - D.Shichikuji and Power Grid(最小生成树)
- 2019-10-22Codeforces Round 594 (Div. 2) - C. Ivan the Fool and the Probability Theory(思维)
- 2019-10-19The 2019 ICPC China Nanchang National Invitational and International Silk-Road Programming Contest - F.Sequence(打表+线段树)
- 2019-08-01动态规划（线性，区间，树形，数据结构优化，四边形不等式）
- 2019-07-23组合数学&概率&数学期望
