chenjb's blog

By chenjb, history, 4 weeks ago, In English

Hello! The 18th Zhejiang Provincial Collegiate Programming Contest has been uploaded to the Gym.

The link is The 18th Zhejiang Provincial Collegiate Programming Contest .

This contest also serves as Contest 3, Div.A in this year's Moscow Pre-Finals Workshop 2021, so we also prepare an English tutorial. Note that the contest version in Gym is different from the original version used in ZJCPC. We enlarge the data constraint in H and K to prevent some unintended solutions passing.

Authors: oipotato, Claris, chenjb, Subconscious, shb123, Suika_predator, lxlxl, lwn_16

Testers: Tommyr7, applese, Timsei, quailty, Heltion, SSerxhs, cxt, mengbierr, pb0207, l1ll5, Eden_CY, Jak033021, KanaD ,

Official Scoreboard: Official Scoreboard

Pre-Finals Link: Pre-Finals Link

Tutorial: Tutorial in Dropbox

If anyone can help upload these scoreboards to Gym, we will be very grateful.

Please feel free to discuss problems in comments and hope you enjoy this contest.

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By chenjb, history, 4 months ago, In English

Hello! Happy New Year! I'm happy to announce XXI Open Cup: Grand Prix of Nanjing, which will be held on Jan 10th, 2021.

This contest is mainly prepared by SUA Programming Contest Problem Setter Team, which has already been served as the 2020 ICPC Asia Nanjing Regional Contest.

Authors: chenjb, zimpha, shb123, TsReaper, oipotato, jiangshibiao, MudCoal

Testers: 300iq, Um_nik, Merkurev, KAN, Retired_MiFaFaOvO, Suika_predator, lwn_16, lxlxl, Heltion, liguanglin, lyk248289469. Thank you!

Contest link: http://official.contest.yandex.ru/opencupXXI/contest/24046/enter (Only visible for users with OpenCup login)

I will publish this contest to gym and please feel free to discuss afterwards.

UPD: An editorial written in Chinese Zhihu and I will make an english version later (hopefully).

UPD2: Now it is in the gym.

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By chenjb, history, 6 months ago, In English

I only update all CCPC contests information and all ICPC contests found in Gym for the first publish so far.

In recent years, there are two main programming competitions held in China: China Collegiate Programming Contest (CCPC) and International Collegiate Programming Contest (ICPC). These contests are prepared by universities or groups in China and some of them are of very high quality.

Before I was retired, I find it quite hard and annoying to find these contests since they are uploaded in many different websites and some of them might come with wrong data. What's worse, some contests are not allowed to participate virtually or even not been published to any website at all. So I wanna make an aggregation here to help those who are interested in these contests.

I will mainly focus on contests from 2014 — 2020 and I will update it when new contests are published. I hope authors could make comments under this blog to inform me about it.

1.China Collegiate Programming Contest (CCPC)

2020: (4 sites and 1 Finals)

Qinhuangdao by Tsinghua U: 2020 China Collegiate Programming Contest Qinhuangdao Site

Weihai (XXI OpenCup, Gp of Weihai) by Nanjing U: 2020 China Collegiate Programming Contest, Weihai Site

Mianyang by UESTC: 2020 China Collegiate Programming Contest - Mianyang Site

Changchun by Shanghai JTU: 2020 China Collegiate Programming Contest Changchun Onsite

Finals: Expected in 2021.

2019: (3 sites and 1 Finals)

Qinhuangdao by Fudan U: 2019 China Collegiate Programming Contest Qinhuangdao Onsite

Harbin by Zhejiang U: The 2019 China Collegiate Programming Contest Harbin Site

Xiamen by SYSU: Already used in a Moscow workshop camp, not published.

Finals (XIX OpenCup, Gp of Beijing) by Google: 2019 China Collegiate Programming Contest Final (CCPC-Final 2019)

2018: (3 sites and 1 Finals)

Qinhuangdao by Tsinghua U: Not published.

Jilin by Shanghai JTU: Vjudge Replay

Guilin by UESTC: 2018 China Collegiate Programming Contest - Guilin Site

Finals by Google: 2018 China Collegiate Programming Contest Final (CCPC-Final 2018)

2017: (3 sites and 1 Finals)

Qinhuangdao by Zhejiang U: ZOJ

Harbin by SYSU: Vjudge Replay

Hangzhou by Fudan U: Vjudge Replay

Finals by Google: Vjudge Replay

2016: (3 sites and 1 Finals)

Hefei by Tsinghua U: Vjudge Replay

Hangzhou by UESTC: Vjudge Replay

Changchun by Shanghai JTU: Vjudge Replay

Finals by Google: Vjudge Replay

2015: (1 Finals)

Finals by Google: Vjudge Replay

2.International Collegiate Programming Contest (ICPC)

2019:

2019 ICPC Asia-East Continent Final

2019-2020 ICPC Asia Hong Kong Regional Contest

2018:

2018-2019 ACM-ICPC, Asia East Continent Finals

2018-2019 ACM-ICPC, Asia Jiaozuo Regional Contest

2018-2019 ACM-ICPC, Asia Xuzhou Regional Contest

2018-2019 ACM-ICPC, Asia Nanjing Regional Contest

2018-2019 ACM-ICPC, Asia Shenyang Regional Contest

2017:

2017-2018 ACM-ICPC Asia East Continent League Final (ECL-Final 2017)

2016:

2016-2017 ACM-ICPC CHINA-Final

2014:

2014-2015 ACM-ICPC, Asia Mudanjiang Regional Contest

2014-2015 ACM-ICPC, Asia Xian Regional Contest

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By chenjb, history, 13 months ago, In English

Hello! I'm happy to announce XX Open Cup: Grand Prix of Nanjing, which will be held on May 3rd, 2020.

This contest is mainly prepared by gisp_zjz and me, which has already been used in Moscow Pre-Finals Workshop 2020 Day 5 on April 29th, 2020.

As you can see on the top of the statement, this contest is also been called Legilimens+Coffee Chicken Contest. Team Coffee Chicken from Nanjing University will participate in World Finals 2020 and we wish them best luck in Moscow. Team Legilimens is from Zhejiang University, which is my team in the past 3 years. Although we didn't get advanced to World Finals 2020 and this is the end of our journey, we have experienced a lot of happy and unforgettable moments. Therefore, please allow me to express my gratefulness to my teammates Subconscious and oipotato. And may the friendship between Nanjing University and Zhejiang University last forever.

Authors of this contest come from Competitive Programming Team members from both Zhejiang University and Nanjing University, including gisp_zjz, AceSrc, zyb, Roundgod, calabash_boy, Ysera, chenjb, Subconscious, oipotato, Heltion, etc.

Testers: mayaohua2003, gtrhetr, xiaowuc1. Thank you!

Contest link: http://official.contest.yandex.ru/opencupXX/contest/18242/enter (Only visible for users with OpenCup login)

I will post the editorial after the contest. We are looking forward to your participation!

UPD: Now it is over. Please feel free to discuss solutions and this is the Editorial Sketch.

UPD2: Now it is in the gym.

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By chenjb, history, 15 months ago, In English

Gp of Zhejiang is over...Let's discuss solutions. How to solve C?

Is there an editorial? Retired_MiFaFaOvO

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By chenjb, history, 2 years ago, In English

ZOJ Monthly, January 2019 will be held on Saturday (time). The main problem setters are chenjb and Claris.

Contest Link

It will last for 5 hours and have 8-9 problems in total. Since there is no rating system(Thanks to MudCoal, we may have one in the future) in our Zhejiang University Online Judge, it will be unrated. And I guess the difficulty is as a normal Educational Contest in Codeforces.

All problem ideas come from members of Zhejiang University Programming Contest Setting Team and most of them have already been used in the Internal Member-Selection Contests in ZJU held in July, 2018. They have been carefully selected, modified, tested by our problem setters and rearranged into this Monthly contest eventually.

Special thanks to Claris for helping me testing problems, modifying the content and some other matters. He even gives better and stronger solutions to some problems, which make them more interesting and challenging. I am very grateful.

Also thank TsReaper and shb123 for the help and zimpha, lyk248289469, Heltion, HbFS-, johann_wang, Onlynagesha, zhhhplus, etc for their ideas.

There have been less ZOJ Monthly Contests these years. Therefore, we cherish every chance and wish to make every Monthly contest as good as possible. I really hope all of you can enjoy this contest. Can't wait to see you guys on Saturday!

UPD: The contest will begin in less than 9 hours and there will be 9 problems in total. If you have any question about the contest, please make comments under this blog. And please not to discuss about the solution until the contest ends.

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