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Results

1.
By Zanite, 3 years ago, In English
[Photos Dump] Jollybee CP Team, the Luxor WF, and the Indomie Aftermath Whether or not you went to the ICPC WF 2023 in Luxor, you might remember us from the [Indomie trade offer blog](https://codeforces.me/blog/entry/127903) a while back. Aside from my team ([user:rfpermen,2024-04-30], me, [user:vioalbert,2024-04-30], and [user:siplusplus,2024-04-30] as coach) in the previous blog, of course our university's team for the 46th WF ([user:Owmicron,2024-04-30], [user:zeroscar,2024-04-30], [user:KerakTelor,2024-04-30], and [user:Yoshiyuki,2024-04-30] as coach) also joined us in many of our activities, including finding people to trade and/or give the two boxes of Indomie we brought to Luxor. In this blog, I'd like to share some of the pictures we ([Jollybee](https://www.instagram.com/binusjollybee/), the CP team in our university) took with others during the WF. **UPD:** There were several issues with the images; they weren't loading properly. The images are now hosted on ImgBB. ## Signed T-Shirts After doing something similar when I was parti...
ICPC logo on it (yes, a bunch of people thought it was an official T-shirt), one for each person, it was an official T-shirt), one for each person. Only two of them were actually used:

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2.
By Seyaua, 12 years ago, In English
Rockethon 2015 Announcement <a href="http://rocketfuel.com/"><img src="http://assets.codeforces.com/images/rockethon/HZ-LOGO-TAG-RGB-big.png" style="float:right;margin:0 2em 2em 2em;"/></a> Hello Codeforces community, I am happy to announce that [Rocket Fuel Inc.](http://rocketfuel.com/) will be hosting a Rockethon competition again! The contest is prepared by Rocket Fuel employees Eldar Bogdanov, Anton Lomonos, Lasha Lakirbaia, Alexander Ruff, Nikhil Goyal and me, Ievgen Soboliev. We hope everyone will find some interesting problems in the contest and everyone will have as much fun solving these problems as we had preparing them. Just like last year, the best participants will receive valuable prizes and top performers will get Rockethon 2015 T-shirts! Also, Rocket Fuel is interested in hiring people after this event, so please fill out the simple form during registration. About Rocket Fuel --------------------- Rocket Fuel is building technology platform to do automatic targeting and optimization of a...
will receive a Rockethon T-shirt designed specially for this contest. If you are unable to take

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3.
By MikeMirzayanov, 17 years ago, translation, In English
Memories: ACM-ICPC World Finals 2009 <p> <img src="http://lh6.ggpht.com/_mSdPzSw5zAo/S2KKSsTdWyI/AAAAAAAADGE/vpMUDSuenS0/IMG_0494.JPG" style="float: left;margin: 1.0em;"> The World Finals of the 33rd International Collegiate Programming Contest for was held in the capital of Sweden, Stockholm. The contest was held in Europe for the third time: in 1999 it was held in Eindhoven (the Netherlands), in 2004 - in Prague (the Czech Republic). It was the first time the key role in the competition had been played by the University: it was held in the library of the Royal Technological University. One hundred best teams of the world took part in the final, while the preliminary rounds saw 7109 teams from 1838 Universities and 88 countries competing. It was the sixth time the Saratov State University had took part in ACM-ICPC World Finals. </p> <p> The participants were placed in two hotels in the historic centre of Stockholm, Gamla Stan district. Our team was placed in the Gran...
Technological University spent hours in T-shirts under the open sky., there, as the volunteers from the Royal Technological University spent hours in T-shirts under

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4.
By IcpcHelwan, 3 years ago, In English
Contest Without tests :)) #### We would like to thank everyone who contributed to this contest, whether by providing ideas or participating in solving the problems. - [user:MUZAN,2025-02-08] - [user:TANJIR0U,2024-12-10] - [user:detective...dots,2024-01-31] - [user:ZAYAN,2024-01-31] - [user:Uchiha_Ouda,2024-01-31] - [user:jimy_26,2024-01-31] - [user:gom3a_,2025-02-08] #### And we also want to thank those who tested the problems. - [user:Ali_Azzam,2024-01-31] - [user:ahmedalaa22,2024-02-03] - [user:opop1omar,2024-01-31] - [user:Ahmed_JS,2024-01-31] [A &mdash; Free Palestine](http://codeforces.me/group/rjUbMTacuS/contest/500816/problem/A) ------------------ Idea: [user:gom3a_,2025-02-08] <spoiler summary="Hint"> How many numbers are there from $1$ to $3$? </spoiler> <spoiler summary="Tutorial"> You simply calculate $end - start + 1$. </spoiler> <spoiler summary="Solution (gom3a_)"> ~~~~~ /* " أَمْ حَسِبْتُمْ أَن تَدْخُلُوا الْجَنَّةَ وَلَمَّا يَأْتِكُم مَّثَلُ الّ...
If $z > x$, how much does the T-shirt cost after already buying $y

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5.
By ARSalman23, history, 3 years ago, In English
Some STL-related problems STL Vector 1. Sereja and Dima Link: https://codeforces.me/problemset/problem/381/A 2. Distinct Count Link: https://www.hackerearth.com/practice/data-structures/trees/binary-search-tree/practice-problems/algorithm/distinct-count/ STL String 1. String Task Link: https://codeforces.me/problemset/problem/118/A 2. The Palindrome Link: https://www.hackerearth.com/problem/algorithm/the-palindrome-2/ 3. Petya and Strings Link: https://codeforces.me/contest/112/problem/A 4. Haiku Link: https://codeforces.me/contest/78/problem/A 5. LexoGeek Link: https://www.hackerearth.com/problem/algorithm/lexogeek-e6450fb7/ 6. Dubstep Link: https://codeforces.me/problemset/problem/208/A 7. Pangram Link: https://codeforces.me/contest/520/problem/A STL Pair 1. Indian Summer Link: https://codeforces.me/contest/44/problem/A 2. Rank List Link: https://codeforces.me/problemset/problem/166/A 3. Games Link: https://codeforces.me/contest/268/problem/A...
/heapspriority-queues/practice-problems/algorithm/monk-and-multiplication/ 2. T- shirt buying Link: https, 2. T-shirt buying Link: https://codeforces.me/contest/799/problem/B

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6.
By KAN, 10 years ago, translation, In English
Playrix Codescapes Cup Problems Analysis <spoiler summary="A: Carrot Cakes"> [tutorial:799A] </spoiler> <spoiler summary="B: T-shirt buying"> [tutorial:799B] </spoiler> <spoiler summary="C: Fountains"> [tutorial:799C] </spoiler> <spoiler summary="D: Field expansion"> [tutorial:799D] </spoiler> <spoiler summary="E: Aquarium decoration"> [tutorial:799E] </spoiler> <spoiler summary="F: Beautiful fountains rows"> [tutorial:799F] </spoiler> <spoiler summary="G: Cut the pie"> [tutorial:799G] </spoiler>
[tutorial:799A] , [tutorial:799B]

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7.
By siplusplus, 3 years ago, In English
ICPC WF 2023 Luxor -- Trade for Indomie Hi, and let me get straight to the point. **Do you want to trade your local instant noodles for the Indonesian Indomie?** [cut] ![Indomie Mi Goreng](/predownloaded/27/38/273832cde35d7bfa898998030b791f442dc78685.jpg) Image courtesy of Indomie &mdash; PT Indofood Sukses Makmur Tbk. ICPC WF 2023 Luxor is coming soon. I am planning to bring some packs of Indomies there. Probably the original Mi Goreng (Fried Noodles). I'm from Bina Nusantara University (Indonesia), and I will be staying at Jolie Ville Resort during the ICPC WF 2023 with my team. Perhaps we could trade instant noodles during the Arrival/Departure dates? ICPC WF Schedule: https://docs.icpc.global/wf-schedule/ I don't know if this is a good/bad idea. wdyt? **Update (5 Apr 2024)**: I have bought 80 packs of Indomie. **Update (11 Apr 2024)**: Me with the team! left to right: me, [user:rfpermen,2024-04-11], [user:Zanite,2024-04-11], and [user:vioalbert,2024-04-11] ![okePeko Team](/predownloa...
a black t-shirt with a big Discord :sob: emoji at the back. **Update (14 Apr 2024)**: ![Two

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8.
By Nickolas, 15 years ago, translation, In English
Souvenirs Stories <p>Every time I win a trip to any kind of tournament onsites (so far this happened three times, so I can generalize), I find myself facing a serious problem, named &quot;souvenirs&quot;. I've settled this question once and for all as long as it concerns myself: the best souvenir is a pile of photos accompanied by a thrilling story. The second-best is a couple of Swiss chocolates, though I can handle both at the same time :-) But one can't live in a society and be free of it; and it's the souvenirs for people around me that become a real problem. </p> <p> Take, for example, my last year's trip to Las Vegas. I went there with a t-shirt demand from my future husband's sister. Besides, my future husband himself stayed at home (his visa application was unexpectedly refused, and there's not much point in winning a trip without the visa), and I felt I had to bring him something to cheer him up. So my shopping plans were quite intense. </p> [cut] <p> The t-shirt was easy - one sees them everyw...
to Las Vegas. I went there with a t-shirt demand from my future husband's sister. Besides, my

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9.
By pani.natalia, 5 years ago, In English
deltixlab’s interview: Deltix rounds back story _I am very glad to introduce my guests from [Deltix](https://deltix.io):_ _Aliaksandr [user:sdryapko,2021-12-10] Drapko, the Head of Technology of [CryptoCortex](https://deltix.io/products/cryptocortex.html) product and_ _Vladislav [user:Vladik,2021-12-10] Vishnevsky, the coordinator of all competitive programming activities by Deltix and the key developer of [MarketMaker](https://deltix.io/products/marketmaker.html) product._ _I am proud to be their compatriot, so let me start with some belorussian words of greetings_ _- Прывiтанне, Аляксандр і Уладзіслаў!_ - Прывiтанне, Наталля! _- Deltix is the sponsor of the Belarus National School Olympiad in Informatics. Last spring you represented Deltix at the National Final award ceremony. The award ceremony was very touching for the winners. But what about you? How did you feel presenting them prizes? What were you thinking about at this moment?_ ![ ](/predownloaded/b9/ef/b9ef3e92cbfd2d50ca984d6870ae9a16fd788db4.jpg...
the National Olympiad. In an extremely short time we had to agree on the prize fund,buy prizes and, to support the National Olympiad. In an extremely short time we had to agree on the prize fund,buy

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10.
By MikeMirzayanov, 12 years ago, translation, In English
Codeforces 5 years: Great news! Hello Codeforces! I am happy to announce that the indicated $10000 support fund was raised in a little more than three days! Thanks you very much friends! Now it became possible to pay the writers equivalent funds even they are in rubles. It was impossible because of great increase of the dollar exchange rate. |Round type|USD|Rubles| |-----------|--|---| |Div 1 + Div 2| $250+*$50 | 18000 rub | | Div 2 | $100+*$50 | 9000 rub | <small>We tie the money paid in rubles to the Central Bank of Russia exchange rate, rounded to the closest sum in rubles divisible by 5 (according to the rules of mathematical rounding). The table shows the values that were up-to-date when this post was published. An asterisk marks the bonus that is given if the round is prepared perfectly. </small> And that is not all! As I said before, we now have the opportunity to adequately support the coordinator of the Codeforces problems Max [user:Zlobober,2015-02-27] Akhmdov. He started working on his ...
Codeforces development. Certificates and T-shirts will be sent after the fund raising stops. Please

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11.
By sw_enthusiast, history, 7 years ago, In English
Buying CodeForces T-shirt? I missed donations to support CodeForces and get T-shirt :-). Is there any other way to buy T-shirt?
Buying CodeForces T-shirt?, I missed donations to support CodeForces and get T-shirt :-). Is there any other way tobuy T-shirt?

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12.
By gojira, 13 years ago, translation, In English
Rockethon 2014 Overview Hello Codeforces community, I am happy to announce that Rocket Fuel Inc. will soon be hosting a contest called Rockethon on Codeforces. The contest is prepared by Rocket Fuel employees Jon Derryberry, Alexander Ruff and me, Eldar Bogdanov. We hope you will have as much fun solving the problems as we had crafting them. The contest will feature prizes and T-shirts for top performers. Also, Rocket Fuel is interested in hiring the best of you after this event, so let me tell you about the company and why you would want to join us. ### About Rocket Fuel Rocket Fuel is building technology platform to do automatic targeting and optimization of ads across all channels — display, video, mobile and social. Our pitch to advertisers is very simple "If you can measure metrics of success of your campaign, we can optimize". We have run campaigns for many large advertisers. Examples include BMW, Pizza Hut, Brooks Running Shoes and many more! We buy all our inventory through real time biddi...
contestants will be awarded an iPad Air 16GB. The top 150 performers will receive a RockethonT-shirt

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Announcement of Rockethon 2014
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13.
By dolphinigle, 15 years ago, In English
CROC Champ 2012 — Round 3 (Editorial) This is the editorial for [contest:183] <h3>Remarks</h3> One day, I applied to write another round in Codeforces. To my surprise, I was offered to write CROC instead. I'm quite surprised they offer me (an unknown programmer from a notorious country) to write for such an important match! So I happily oblige --- kudos for the open culture nurtured by Codeforces! I like most the problems of this final round. I think all of them are beautiful in some aspects :). Oh, and all of them emits such concise solutions ;). <h3><a href="http://codeforces.me/contest/183/problem/A">Problem A</a></h3> Author: [user:dolphinigle,2012-04-25]<br/> Ad Hoc I supppose... This problem is equivalent to calculating the number of reachable locations from point (0, 0) by doing the allowed moves. The naive solution is to process the information one by one from first to last, and to keep track on all the reachable positions. Claim: At any moment in time, all reachable locations as described abo...
will receive a T-shirt is equal to the sum of the expected number of engineers that will receive aT

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14.
By Nerevar, 14 years ago, translation, In English
ACM ICPC Finals 2012: Days Two and Three On the second day of staying in the Polish capital we went for a walk in the city centre. It was cold, windy and a little rainy, so those of us who hadn't taken any warm clothes to Poland, had to buy hats, scarves and jumpers with Polish national symbols in souvenir shops. We were very impressed by the Old Town (Stare Miasto) that was destroyed in the World War II but then rebuilt. Actually, that's what comes to my mind when I imagine a historical centre of a European city: narrow sett-paved streats, clock towers with high spines, tiled roofs... [cut] <p> <center> <img src="http://assets.codeforces.com/photos/finals-2012/img_1210.JPG" style="width: 600.0px;"> <br> <small>Huge portions of absolutely delicious ice cream stand right on the streets.</small> </center> </p> <p> <center> <img src="http://assets.codeforces.com/photos/finals-2012/img_1213.JPG" style="width: 600.0px;"> <br> <small>Catholic church has made steps towards people: the cathedral has wifi and bluetoot...
cold, windy and a little rainy, so those of us who hadn't taken any warm clothes to Poland, had tobuy

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15.
By gKseni, 10 years ago, translation, In English
Code Festival 2016: interview and photos from participants [Code Festival 2016](http://codeforces.me/blog/entry/48616) was held in Tokyo on 25-30 of November. Boris [user:qwerty787788,2016-12-13] Minaev has shared with us his impressions, and Maxim [user:Zlobober,2016-12-13] Ahmedov and Nicolay [user:KAN,2016-12-13] Kalinin shared photos. &mdash; _To start with, let's mention that,_ [AtCoder](https://atcoder.jp/) _and_ [Indeed company](http://ru.indeed.com/about) _announced the festival. How many quals were there? In what way were they arranged?_ &mdash; There were 3 contests, in which you could take part. In the first part TOP-10 were selected, in the second one — TOP-5, the third one — TOP-5. To sum up, there are 20 foreigners to be selected. &mdash; _Which quals the Japanese had then?_ &mdash; Probably the same, but 200 participants passed the qual there. &mdash; _That means, the event is more orientated on Japanese people?_ &mdash; The previous years the event was held only for Japanese, this year they decided ...
many T-shirt from contests do you have? — To count the number of t-shirts that are NOT

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16.
By GODOF_Shinobi, history, 10 years ago, In English
Playrix Codescapes Cup Problem B: T-shirt buying This post is regarding yesterday's problem B. Here are two solutions [submission:27045354] and [submission:27019672] although being similar , one of the two solutions passed and the other had a TLE on Case 39. I know when we try to find and delete an element which is not present in set using **set.erase(set.find(x))** ,then it gives an exception as find returns an iterator that points at the end of the set. My doubt is does this happen even if I use **set.erase(x)**, or was this ambiguous nature? Any help would be appreciated.
Playrix Codescapes Cup Problem B: T-shirt buying

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17.
By _Aditya_Jain_, history, 16 months ago, In English
[Invitation] IICPC QuantFest 2025 We are thrilled to invite you to QuantFest, a premier quant finance event brought to you by [IICPC](https://iicpc.com/), sponsored by Jane Street, Tower Research Capital, Hudson River Trading and IMC! ![ Quantfest Poster ](https://media.discordapp.net/attachments/1371218900716622014/1392835083215569037/WhatsApp_Image_2025-07-07_at_14.52.02_1.jpeg?ex=6870fa41&is=686fa8c1&hm=dd08644b7fe82cccf01e2952b58ba4ffcfc8d5e5bf12a3332b995f99e6dc27f3&=&format=webp&width=3176&height=1786) All students from host campuses are expected to appear on-site for prelims. Everyone else, including those who have graduated can appear in the online mirror. We will have 95% seats for on-site students and 5% seats for online mirror students in the regionals. International Students will have separate seats. --- **Details** ------------------ Quantfest is a 3 stage Individual Contest: **Stage 1 (Prelims) :** To be held on campus by all 23 IITs, IIITH, IIITD, IIITA, IIITL, BITS Pilani, Goa and Hyde...
+ and Cash prize of 3.5 lacs+**. Moreover, all finalists and regionalists will receiveT-shirts

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18.
By _Hieu_2001, history, 9 years ago, In English
Codefight t shirt Challenge and buy[T-shirts!!!](https://codefights.com/signup/RpaJRHgA9qKhTPNj7/main) [Has anyone purchased a T-shirt from CodeFights?](https://www.quora.com/Has-anyone-purchased-a-T-shirt-from-CodeFights)
Codefight t shirt, Challenge and buy[T -shirts!!!](https://codefights.com/signup/RpaJRHgA9qKhTPNj7/main)

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19.
By pistone, 15 years ago, In English
codeforces t-shirts is it possible to have codeforces t-shirts , i am ready to buy many
codeforces t-shirts

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20.
By Floppy, history, 11 years ago, In English
Let's buy T-shirts on Codefight! Challenge and buy [T-shirts](https://codefights.com/store)!!!
Let's buy T-shirts on Codefight!, Challenge and buy [T-shirts](https://codefights.com/store)!!!

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