Codeforces Round 775 (Div. 1, based on Moscow Open Olympiad in Informatics) B. Integral Array
2021-2022 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) C. Connect the Points
2021-2022 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) L. Labyrinth
Codeforces Round 786 (Div. 3) F. Desktop Rearrangement
Codeforces Round 787 (Div. 3) F. Vlad and Unfinished Business
D - 動的計画法
D - あまり
C - 天下一美術館
B - stepモード
D - ロボット