UPD: You can predownload tests as an encrypted zip-archive by the links https://test1.codeforces.com/icpc-challenge-2020-tests.zip or https://test4.codeforces.com/icpc-challenge-2020-tests.zip (~80MB). The password is 64e00d81811bbc463e1e636af.

Hello everyone!

Live broadcast

Announcing the ICPC Graph Mining Challenge, Powered by Huawei and brought to you by ICPC U. Graphs are a powerful mechanism for representing many aspects of our daily lives, from mobile call routing to disease tracking. Answering various graph-related questions enables solutions to some of the most challenging, modern problems. The ICPC Challenge presents a problem from some area in computing. The area and problem style may be very different from the standard ICPC problems. Previous contests included new programming languages, multi-agents, parallel programming, etc. The ICPC Challenge provides a platform for ICPC to experiment with new problem types. It also provides participants with experience in some new area and problem type.

The ICPC Graph Mining Challenge will take place online during ICPC Day Zero on 27 June, 2020, 11:00-14:00 UTC. This round is unrated for all participants. Day Zero is a celebration of the 2020 ICPC World Finals, hosted by the Moscow Institute of Physics and Technology (MIPT). Everybody is welcome to participate. This is an individual competition. Participants will be divided into three groups: 2020 ICPC World Finals Contestant, 2020 ICPC World Finals Coach (includes co-coaches), and Participants. The 2020 ICPC World Finals Contestants and Coaches with the best graph solutions will be recognized as ICPC Challenge Winners. The top-scoring participants will also receive great prizes.

Huawei will provide prizes to the 12 winners in each group accordingly:

• Group 1: 3 hour Challenge — ICPC 2020 World Finalists
• Group 2: 3 hour Challenge — ICPC Coaches and Co-Coaches
• Group 3: 3 hour Challenge — All participants

Each participant may win at most one prize for this Challenge.

All participants must agree to follow the 2020 ICPC Graph Mining Challenge Rules.

Participation Instructions:

1. Read and agree to follow the rules.
2. Create a Codeforces account if you don’t already have one.
3. Associate your Codeforces account with your ICPC account if you have one. Though optional, this is necessary if you want to compete as a 2020 ICPC World Finalist or Coach.
4. Register for the contest here.
5. Please, make sure to complete the Warm-up at least 24 hours before the event to test your access, etc.
6. There will be large input files. They will be available here at least 24 hours in advance. We recommend you to download them before the event.
7. Go here at least 20 minutes prior to the start of the contest.

Good luck to all participants!

Dear friends!

We're thrilled to invite you to the two great events which will be held in Turkey for the first time ever!

ICPC is delighted to announce the First National Programming Contest in Turkey, organized by inzva in collaboration with the Middle East Technical University (METU) to be held on September 13-15, 2019.

We’re inviting university teams across Turkey to participate in the national contest in Beykoz Kundura, Istanbul — completely free of charge — thanks to the ICPC local partner — inzva, a non-profit community focused on artificial intelligence and algorithm, supported by BEV — an Education Foundation for the Digital Native Generation.

Top ten teams qualifying in this contest can then participate in the Southerneastern Europe Regional Contest, and will be financially supported for this purpose. The winner teams of the Southern Europe Regional Contest are eligible to participate at the ICPC Moscow 2020 World Finals!

Also, this weekend on September 14 in Istanbul will be held the Annual ICPC Alumni Reunion Dinner.

It is the first ICPC Alumni event happening in Southeastern European Region, and we will be extremely honored to welcome you and your colleagues/classmates/coaches on this special day. Please feel free to extend this invitation to your guests.

ICPC Alumni Reunion Dinner will be held on Saturday, September 14, 2019, at Beykoz Shoe Factory, Yaliköy Mah. Süreyya İlmen Cad. No:1/1 Beykoz, Istanbul. There will be a reception that begins at 4pm, with dinner to follow at 5pm. Please feel free to extend this invitation to your guests.

This event is free of charge but requires reservation before September 1, 2019. Please be sure to RSVP via this form to secure your place:

In addition to this being a fun reunion for local ICPC participants, we will be recognizing the accomplishments of various ICPC volunteers who make the show happen each year. ICPC Executive Director Bill Poucher will be in attendance, and various other judges, staff, and coaches. We would be honored if you can make it as well, and partake in the festivities.

We are unfortunately unable to welcome all outside guests but have done our best to invite as many ICPC Alumni as possible, please feel free to extend this invitation to any other finalists/regional participants that you know to be in the area. You can also send their names and contact info to [email protected] so that we can add them to the invitation list. Once registered — you’ll receive official confirmation of your personal invitation, as well as all travel details.

Looking forward to meeting you in Turkey!

ICPC Foundation стремится создать ассоциацию из участников ICPС по всему миру!

И мы рады объявить о нашей большой встрече-воссоединении, которая состоится в особенном месте — Университете ИТМО в Санкт-Петербурге.

Приглашаем вас присоединиться к своим коллегам по спортивному программированию на первой встрече выпускников ICPC, которая, надеемся, станет приятной традицией. Кроме участников ICPC мы будем рады видеть волонтеров, помогающих с организацией соревнований из года в год.

Сообщите, пожалуйста, нам о своем визите через форму до 23 июня:

Зарегистрироваться

Почетными гостями встречи станут исполнительный директор ICPC доктор Уильям Паучер, а так же судьи, тренеры и организаторы соревнований.

К сожалению, мы не сможем принять всех внешних гостей, но постараемся сделать все возможное, чтобы пригласить как можно больше выпускников из России и Европы. Для этого пожалуйста, свяжитесь с любым другим финалистам и участникам региональных отборов и расскажите о готовящемся мероприятии. Вы также можете отправить их имена и контактную информацию по адресу [email protected], чтобы мы могли добавить их в список приглашенных.

Также, если у вас есть фотографии со времен вашего участия или волонтерства на соревнованиях, поделитесь ими для пополнения архива истории ICPC, прислав по адресу [email protected].

Встреча состоится в субботу 6 июля в стенах Университета ИТМО по адресу Биржевая линия 14-16. Он начнется в 5 часов вечера с последующим ужином в 6. Желающие могут присоединиться к вечерней прогулке на корабле.

Мы с нетерпением ждем воссоединения и празднования со всеми, кто связан с ICPC, и будем рады видеть каждого из вас!

My name is Fadi Ashy I’m a Game Programmer and a senior software engineering student at Al-Baath University from Syria. ACM was a big part of my life through college. I was a contestant for three years reaching my country’s final “SCPC” three times and for the fourth year, I went to be an organizer for our local and country’s Contest. Codeforces was a huge player in my journey solving around 300+ problems in different areas of the sea of Computer Programming.

My story to the ICPC started when I logged in my e-mail one day and came across a contest hosted by the ICPC in my newsletter for a chance to win a trip to the ICPC Finals in Beijing by sharing a small video about yourself in the ICPC. So I got my camera and posted my video on YouTube and waited for the results and finally, I got accepted and even more on that I got the chance to work with the ICPC News team on the contest hall.

My preparations for the ICPC went fine getting all the paperwork. Sometimes it is problems to attend because of where you live. I faced some basic problems that everyone had while living in Syria. I got a problem paying for the visa and my ticket because there was no online payment and then I got my visa because it was delayed about 4 days before the travel time, but with some really awesome people from the ACPC and SCPC helped me a lot.

After all the preparations have been done we started a 24 hours trip from my hometown in Syria all the way to Beijing crossing more than 3 countries using buses and planes. It was one of the longest trips I’ve ever had, but the end of it was one of the greatest cities on earth.

When we arrived, I was stunned by how many people are there in the ICPC. I’m used to participating and organizing small events and not something this big. But I realized something: more people sometimes means more fun. I can’t explain how amazing it was to share your story and get to meet a lot of people from so many countries around the world, and also being in the geekiest community ever. All the talks and the conversation we shared was about computer programing and some cool stuff happening in that field. I also got the chance to meet the greatest managing team ever and had a chance to meet people that were known to me in just a small name at the end of an e-mail.

But finally, I got to meet the ICPC News team. I got my bag and fired up my laptop and waited for some task to help in with. Working on some photos using Photoshop and working on small Ideas and even helping in the live stream on the official page. What I loved the most about the team is how professional they are. And yeah, I used a mac for the first time and it isn’t that good… mmm maybe I’m windows fanboy, I don’t know.

And as I mentioned before, a big number of people also need an awesome huge place to host them all and Peking University is spectacular, amazing Campus, amazing students and I can’t really describe the contest hall. I think the photos should describe it all.

Maybe I have more fun working than really having fun, but the ICPC is full of fun activities either with the teams and friends, or you can ditch all ICPC stuff and go walking in beautiful Beijing. We even got a chance for an awesome trip to visit and climb the Great Wall of China. One piece of advice if you’ll ever go there and you’re a full-time programmer and you’re not used to doing a lot of sports. Are you thinking DON’T climb it just stay on the bus and take a nap. Is it worth it? Kind of: the view from up there is a crazy and an awesome view and you can buy a medal with your name carved on it to always remember that hard time that left you unable to walk for about half a day afterward.

More than 300,000 students competed worldwide in local and regional events with one aim — to participate in World Finals, this year hosted by Peking University in China. And today we will see who will become the world champion!

A total of 140 teams of three students will face about 12 difficult problems (we don't know the number until the problem set is released!). They will have 5 hours to solve the problems.

Although the contest itself takes 5 hours only, the whole event takes 5 days. So, what is going on during these days?

Through the registration evening, each team was given different color shirt and their badges, as well as other goodies like a backpack and a cute stuffed panda bear. We took photos and videos of each team so we can share about them on various social media.

Monday began with JetBrains TechTrek Presentation and a really fun sponsor showcase with games and activities. Contestants could participate in many things — they could try writing Chinese characters, playing traditional Chinese games or instruments, try sports in VR and more... The day was ended with a stunning concert of both traditional and contemporary Chinese music from Peking University, including some original compositions.

On Tuesday we were amazed by The Giant Wall of China. That day we become true men because the Chinese saying is that one is not fully human until he climbs the Great Wall. It was surprisingly steep. Hundreds of people from 6 continents climbed it and had amazing views of the mountains.

The afternoon was all about the opening ceremony, which had speeches, awards for many wonderful people and a presentation of all the teams, interlaced with cultural performances.

Wednesday was an important dress rehearsal. The program is similar to the competition day. It lets everyone find issues so the finals on Thursday can run as smoothly as possible. There are always some technical issues, problems with logging in, printers, etc., but they all got worked out. In the afternoon, contestants had a rest, enjoy a sponsors' ChillZone with games and do the last preparations for the tomorrow's contest.

140 teams participate in world finals. But there are many other people standing behind scenes — coaches, organizers, judges, ICPC teams (News, Services,...) and many other volunteers, totalling in about 1000 people!

The ACM ICPC world finals aren't only about competing. It is also about meeting with great programmers from all around the world, encountering other cultures and sharing the joy of programming. For me, this event is truly awesome and fun to be part of!