| #4001 | BarbecueMoscow Pre-Finals Workshops 2022 Day 5 | |
| #4002 | Easy FixMoscow Pre-Finals Workshops 2022 Day 5 | |
| #4003 | Rounding MasterMoscow Pre-Finals Workshops 2022 Day 5 | |
| #4004 | Resource CalculatorMoscow Pre-Finals Workshops 2022 Day 5 | |
| #4005 | FrogMoscow Pre-Finals Workshops 2022 Day 5 | |
| #4006 | A=BMoscow Pre-Finals Workshops 2022 Day 5 | |
| #4007 | 树ZJOI 2022 Day 1 | |
| #4008 | 众数ZJOI 2022 Day 1 | |
| #4009 | 简单题ZJOI 2022 Day 1 | |
| #4010 | 面条ZJOI 2022 Day 2 | |
| #4011 | 计算几何ZJOI 2022 Day 2 | |
| #4012 | 深搜ZJOI 2022 Day 2 | |
| #4037 | Absolute Pairwise Distance | |
| #4045 | 排列AHOI 2022 | |
| #4046 | 钥匙 AHOI 2022 | |
| #4047 | 山河重整AHOI 2022 | |
| #4048 | 回忆AHOI 2022 | |
| #4049 | 预处理器统一省选 2022 Day 1 | |
| #4050 | 填树统一省选 2022 Day 1 | |
| #4051 | 学术社区统一省选 2022 Day 1 | |
| #4052 | 卡牌统一省选 2022 Day 2 | |
| #4053 | 序列变换统一省选 2022 Day 2 | |
| #4054 | 最大权独立集问题统一省选 2022 Day 2 | |
| #4055 | 整数序列SDOI 2022 Round 1 | |
| #4056 | 进制转换SDOI 2022 Round 1 | |
| #4057 | 子串统计SDOI 2022 Round 1 | |
| #4058 | 小 N 的独立集SDOI 2022 Round 2 | |
| #4059 | 无处存储SDOI 2022 Round 2 | |
| #4060 | 多边形SDOI 2022 Round 2 | |
| #4061 | 垃圾回收SNOI 2022 | |
| #4062 | 军队SNOI 2022 | |
| #4063 | 倍增SNOI 2022 | |
| #4064 | 数位SNOI 2022 | |
| #4065 | Airport CoffeeNCPC 2017 | |
| #4066 | Best Relay TeamNCPC 2017 | |
| #4067 | Compass Card SalesNCPC 2017 | |
| #4068 | Distinctive CharacterNCPC 2017 | |
| #4069 | Emptying the BalticNCPC 2017 | |
| #4070 | Fractal TreeNCPC 2017 | |
| #4071 | Galactic Collegiate Programming ContestNCPC 2017 | |
| #4072 | HubtownNCPC 2017 | |
| #4073 | Import SpaghettiNCPC 2017 | |
| #4074 | Judging MooseNCPC 2017 | |
| #4075 | Kayaking TripNCPC 2017 | |
| #4076 | 문자열 찾기KOI TST 2020 Day 1 | |
| #4077 | 뚫기KOI TST 2020 Day 1 | |
| #4078 | 지름길KOI TST 2020 Day 1 | |
| #4079 | 칠하기KOI TST 2020 Day 1 | |
| #4080 | 마법의 다이얼KOI TST 2020 Day 2 | |
| #4081 | 하나 둘 셋KOI TST 2020 Day 2 | |
| #4082 | 열차의 이동KOI TST 2020 Day 2 | |
| #4083 | 아이싱KOI TST 2020 Day 2 | |
| #4084 | 카드 뒤집기 게임KOI TST 2021 Day 1 | |
| #4085 | 통신망KOI TST 2021 Day 1 | |
| #4086 | 렉KOI TST 2021 Day 1 | |
| #4087 | 철도KOI TST 2021 Day 1Communication | |
| #4088 | 총 쏘기KOI TST 2021 Day 2 | |
| #4089 | 회의실KOI TST 2021 Day 2 | |
| #4090 | 원숭이KOI TST 2021 Day 2 | |
| #4091 | 가로등KOI TST 2021 Day 2 | |
| #4092 | 진화KOI TST 2022 Day 1 | |
| #4093 | 플래피 버드KOI TST 2022 Day 1 | |
| #4094 | 히스토그램KOI TST 2022 Day 1 | |
| #4095 | 날다람쥐KOI TST 2022 Day 1 | |
| #4096 | 코딩 테스트KOI TST 2022 Day 2 | |
| #4097 | 알록달록한 괄호열KOI TST 2022 Day 2 | |
| #4098 | 마법 구슬 찾기KOI TST 2022 Day 2 | |
| #4099 | 보안 시스템KOI TST 2022 Day 2 | |
| #4100 | 储能表SDOI 2016 Round 1 Day 1 | |