2019

• 2019-12-29Codeforces Round 603 (Div. 2) - E. Editor(线段树)
• 2019-12-13Codeforces Round 600 (Div. 2) - D. Harmonious Graph(并查集)
• 2019-10-19The 2019 ICPC China Nanchang National Invitational and International Silk-Road Programming Contest - F.Sequence(打表+线段树)