登录以参加训练计划
CCO Contest Problems (2015-2025)
loj5747 「CCO 2026」Waterloo Tag
loj5748 CCO 2026」Melborp
loj5749 「CCO 2026」Beyond Counting
loj5750 「CCO 2026」Asymmetry
loj5751 「CCO 2026」Tree Traversals
loj5752 「CCO 2026」Walking on a Graph
loj5139 [CCO 2025] Asteroid Mining
loj5140 [CCO 2025] Tree Decorations
loj5141 [CCO 2025] Balanced Integer
loj5142 [CCO 2025] Restaurant Recommendation Rescue
loj5143 [CCO 2025] Patrol Robot
loj5144 [CCO 2025] Shopping Deals
loj4166 [CCO 2024] Treasure Hunt
loj4167 [CCO 2024] Pizza Party
loj4168 [CCO 2024] Summer Driving
loj4169 [CCO 2024] Infiltration
loj4170 [CCO 2024] Heavy Light Decomposition
loj4171 [CCO 2024] Telephone Plans
loj4032 [CCO 2023] Binaria
loj4033 [CCO 2023] Real Mountains
loj4034 [CCO 2023] Line Town
loj4035 [CCO 2023] Flip it and Stick it
loj4036 [CCO 2023] Travelling Trader
loj4037 [CCO 2023] Triangle Collection
loj4023 [CCO 2022] Alternating Heights
loj4024 [CCO 2022] Rainy Markets
loj4025 [CCO 2022] Double Attendance
loj4026 [CCO 2022] Bi-ing Lottery Treekets
loj4027 [CCO 2022] Phone Plans
loj4028 [CCO 2022] Good Game
loj3577 [CCO 2021] 换换排序
loj3578 [CCO 2021] 奇怪的数字系统
loj3579 [CCO 2021] 在黑暗中走出另一个迷宫
loj3580 [CCO 2021] 商旅
loj3581 [CCO 2021] 面包优先搜索
loj3582 [CCO 2021] 环镇
loj3317 [CCO 2020] 和 Grundy 玩游戏
loj3318 [CCO 2020] 赶作业 ddl
loj3319 [CCO 2020] 千山万壑
loj3320 [CCO 2020] 旅行商问题
loj3321 [CCO 2020] 区间收藏
loj3322 [CCO 2020] 购物计划
loj4142 [CCO 2019] Human Error
loj4143 [CCO 2019] Sirtet
loj4144 [CCO 2019] Winter Driving
loj4145 [CCO 2019] Card Scoring
loj4146 [CCO 2019] Marshmallow Molecules
loj4147 [CCO 2019] Bad Codes
loj3514 [CCO 2018 Day1] Geese vs. Hawks
loj3515 [CCO 2018 Day1] Wrong Answer
loj3516 [CCO 2018 Day1] Fun Palace
loj3517 [CCO 2018 Day2] Gradient Descent
loj3518 [CCO 2018 Day2] Boring Lectures
loj3519 [CCO 2018 Day2] Flop Sorting
loj2750 [CCO 2017] Vera 与道路建设
loj2751 [CCO 2017] 矩形帝国的霸业
loj2752 [CCO 2017] Vera 与现代艺术
loj2753 [CCO 2017] 接雨滴
loj2754 [CCO 2017] 专业网络
loj2755 [CCO 2017] 移动数组
loj4212 [CCO 2016] Field Trip
loj4213 [CCO 2016] Splitting Hares
loj4214 [CCO 2016] Legends
loj4215 [CCO 2016] O Canada
loj4216 [CCO 2016] Zombie Apocalypse
loj4217 [CCO 2016] Pirates
loj2792 [CCO 2015] 饥饿的狐狸
loj2793 [CCO 2015] 路短最
loj2794 [CCO 2015] 太阳能飞行
loj2795 [CCO 2015] 冰上车
loj2796 [CCO 2015] 定音鼓手
loj2797 [CCO 2015] 挖掘
章节 1. 《CCO》历年试题
开放
| 题目 | 尝试 | AC | 难度 |
|---|---|---|---|
| loj5747 「CCO 2026」Waterloo Tag | 1 | 1 | 10 |
| loj5748 「CCO 2026」Melborp | 2 | 1 | 10 |
| loj5749 「CCO 2026」Beyond Counting | 1 | 1 | 10 |
| loj5750 「CCO 2026」Asymmetry | 1 | 1 | 10 |
| loj5751 「CCO 2026」Tree Traversals | 1 | 1 | 10 |
| loj5752 「CCO 2026」Walking on a Graph | 1 | 1 | 10 |
| loj5139 「CCO 2025」Asteroid Mining | 1 | 1 | 10 |
| loj5140 「CCO 2025」Tree Decorations | 1 | 1 | 10 |
| loj5141 「CCO 2025」Balanced Integer | 1 | 1 | 10 |
| loj5142 「CCO 2025」Restaurant Recommendation Rescue | 1 | 1 | 10 |
| loj5143 「CCO 2025」Patrol Robot | 1 | 1 | 10 |
| loj5144 「CCO 2025」Shopping Deals | 1 | 1 | 10 |
| loj4166 「CCO 2024」Treasure Hunt | 1 | 1 | 10 |
| loj4167 「CCO 2024」Pizza Party | 1 | 1 | 10 |
| loj4168 「CCO 2024」Summer Driving | 1 | 1 | 10 |
| loj4169 「CCO 2024」Infiltration | 1 | 1 | 10 |
| loj4170 「CCO 2024」Heavy Light Decomposition | 1 | 1 | 10 |
| loj4171 「CCO 2024」Telephone Plans | 1 | 1 | 10 |
| loj4032 「CCO 2023」Binaria | 1 | 1 | 10 |
| loj4033 「CCO 2023」Real Mountains | 1 | 1 | 10 |
| loj4034 「CCO 2023」Line Town | 1 | 1 | 10 |
| loj4035 「CCO 2023」Flip it and Stick it | 1 | 1 | 10 |
| loj4036 「CCO 2023」Travelling Trader | 1 | 1 | 10 |
| loj4037 「CCO 2023」Triangle Collection | 1 | 1 | 10 |
| loj4023 「CCO 2022」Alternating Heights | 1 | 1 | 10 |
| loj4024 「CCO 2022」Rainy Markets | 1 | 1 | 10 |
| loj4025 「CCO 2022」Double Attendance | 1 | 1 | 10 |
| loj4026 「CCO 2022」Bi-ing Lottery Treekets | 1 | 1 | 10 |
| loj4027 「CCO 2022」Phone Plans | 1 | 1 | 10 |
| loj4028 「CCO 2022」Good Game | 3 | 1 | 10 |
| loj3577 「CCO 2021」换换排序 | 1 | 1 | 10 |
| loj3578 「CCO 2021」奇怪的数字系统 | 1 | 1 | 10 |
| loj3579 「CCO 2021」在黑暗中走出另一个迷宫 | 1 | 1 | 10 |
| loj3580 「CCO 2021」商旅 | 1 | 1 | 10 |
| loj3581 「CCO 2021」面包优先搜索 | 1 | 1 | 10 |
| loj3582 「CCO 2021」环镇 | 1 | 1 | 10 |
| loj3317 「CCO 2020」和 Grundy 玩游戏 | 1 | 1 | 10 |
| loj3318 「CCO 2020」赶作业 ddl | 1 | 1 | 10 |
| loj3319 「CCO 2020」千山万壑 | 3 | 1 | 10 |
| loj3320 「CCO 2020」旅行商问题 | 1 | 1 | 10 |
| loj3321 「CCO 2020」区间收藏 | 1 | 1 | 10 |
| loj3322 「CCO 2020」购物计划 | 1 | 1 | 10 |
| loj4142 「CCO 2019」Human Error | 1 | 1 | 10 |
| loj4143 「CCO 2019」Sirtet | 1 | 1 | 10 |
| loj4144 「CCO 2019」Winter Driving | 1 | 1 | 10 |
| loj4145 「CCO 2019」Card Scoring | 2 | 1 | 10 |
| loj4146 「CCO 2019」Marshmallow Molecules | 1 | 1 | 10 |
| loj4147 「CCO 2019」Bad Codes | 1 | 1 | 10 |
| loj3514 「CCO 2018 Day1」Geese vs. Hawks | 1 | 1 | 10 |
| loj3515 「CCO 2018 Day1」Wrong Answer | 2 | 1 | 10 |
| loj3516 「CCO 2018 Day1」Fun Palace | 1 | 1 | 10 |
| loj3517 「CCO 2018 Day2」Gradient Descent | 1 | 1 | 10 |
| loj3518 「CCO 2018 Day2」Boring Lectures | 1 | 1 | 10 |
| loj3519 「CCO 2018 Day2」Flop Sorting | 1 | 1 | 10 |
| loj2750 「CCO 2017」Vera 与道路建设 | 1 | 1 | 10 |
| loj2751 「CCO 2017」矩形帝国的霸业 | 1 | 1 | 10 |
| loj2752 「CCO 2017」Vera 与现代艺术 | 1 | 1 | 10 |
| loj2753 「CCO 2017」接雨滴 | 1 | 1 | 10 |
| loj2754 「CCO 2017」专业网络 | 1 | 1 | 10 |
| loj2755 「CCO 2017」移动数组 | 1 | 1 | 10 |
| loj4212 「CCO 2016」Field Trip | 1 | 1 | 10 |
| loj4213 「CCO 2016」Splitting Hares | 1 | 1 | 10 |
| loj4214 「CCO 2016」Legends | 0 | 0 | (无) |
| loj4215 「CCO 2016」O Canada | 1 | 1 | 10 |
| loj4216 「CCO 2016」Zombie Apocalypse | 1 | 1 | 10 |
| loj4217 「CCO 2016」Pirates | 1 | 0 | 10 |
| loj2792 「CCO 2015」饥饿的狐狸 | 1 | 1 | 10 |
| loj2793 「CCO 2015」路短最 | 1 | 1 | 10 |
| loj2794 「CCO 2015」太阳能飞行 | 2 | 1 | 10 |
| loj2795 「CCO 2015」冰上车 | 2 | 1 | 10 |
| loj2796 「CCO 2015」定音鼓手 | 1 | 1 | 10 |
| loj2797 「CCO 2015」挖掘 | 1 | 1 | 10 |