→ Languages
The following languages are only available languages for the problems from the contest
Western European Olympiad in Informatics 2024 Mirror:
- GNU G++17 7.3.0
- GNU G++20 13.2 (64 bit, winlibs)
- GNU G++23 14.2 (64 bit, msys2)
→ About Contest
The Western European Olympiad in Informatics is an individual contest for top secondary school students from Belgium, France, Ireland, Italy, Luxembourg, Netherlands, Portugal, Spain, Switzerland and United Kingdom.
→ Virtual participation
Virtual contest is a way to take part in past contest, as close as possible to participation on time. It is supported only ICPC mode for virtual contests.
If you've seen these problems, a virtual contest is not for you - solve these problems in the archive.
If you just want to solve some problem from a contest, a virtual contest is not for you - solve this problem in the archive.
Never use someone else's code, read the tutorials or communicate with other person during a virtual contest.
→ Practice?
Want to solve the contest problems after the official contest ends? Just register for practice and you will be able to submit solutions.
→ Status filter
Problem D - Double Agents
Contest status
| # | When | Who | Problem | Lang | Verdict |
|---|---|---|---|---|---|
| 326777400 | Jul/01/2025 12:50 | vjudge.9 | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 270450971 | Jul/14/2024 14:27 | Ghulam_Junaid | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 272969732 | Jul/27/2024 15:02 | Qwerty1232# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 365305235 | Mar/04/2026 09:16 | Baraa-Ahmed# | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 365474951 | Mar/05/2026 16:22 | Baraa-Ahmed | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 270440323 | Jul/14/2024 12:58 | bachbeo2007 | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 326747900 | Jul/01/2025 09:09 | vjudge.8 | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270609511 | Jul/15/2024 13:19 | amineriwa# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 274579802 | Aug/05/2024 20:42 | alg0rel | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270586831 | Jul/15/2024 10:41 | NeroZein# | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270577464 | Jul/15/2024 09:35 | Jawad.Akbar_JJ# | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 271739888 | Jul/21/2024 14:05 | Nonoze | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 326767114 | Jul/01/2025 11:47 | Almonther | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 286612072 | Oct/18/2024 23:10 | _rey# | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 271282812 | Jul/18/2024 22:33 | KolunG | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 325607715 | Jun/22/2025 21:14 | dssfsuper2 | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 328355532 | Jul/10/2025 12:37 | suffixsum# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 366976301 | Mar/16/2026 18:18 | toast12 | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 286612606 | Oct/18/2024 23:17 | DereFer# | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 272054210 | Jul/23/2024 13:09 | TAhmed33# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270442126 | Jul/14/2024 13:13 | irmuun | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270458269 | Jul/14/2024 15:23 | ashler66 | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270445557 | Jul/14/2024 13:43 | alexander707070 | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270447683 | Jul/14/2024 14:00 | chernega | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 315508124 | Apr/14/2025 00:17 | julia_08# | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 326192412 | Jun/26/2025 22:07 | levin3841023894 | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 270439031 | Jul/14/2024 12:48 | libobil | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 337460014 | Sep/07/2025 21:22 | ekhalifa | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 369100510 | Apr/01/2026 14:35 | darkahmed# | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 315152684 | Apr/12/2025 16:45 | NK_# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 275425024 | Aug/09/2024 20:28 | Agreb# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270598046 | Jul/15/2024 11:56 | beautifullife | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 350930359 | Nov/28/2025 06:18 | khoad | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 325829212 | Jun/23/2025 21:06 | darysani | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 270590733 | Jul/15/2024 11:10 | dmraykhan | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270457008 | Jul/14/2024 15:13 | dmraykhan | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270876687 | Jul/16/2024 16:14 | gray | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 350835798 | Nov/27/2025 12:38 | chikien2009# | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 270868584 | Jul/16/2024 15:20 | rolandpetrean# | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270577901 | Jul/15/2024 09:39 | The-Winner | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270451195 | Jul/14/2024 14:28 | Jakub_Woxniak | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270875418 | Jul/16/2024 16:06 | SamueleVid | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 372186729 | Apr/23/2026 02:01 | O_Elmasry# | D - Double Agents | C++23 (GCC 14-64, msys2) | Perfect result: 100 points |
| 292028726 | Nov/17/2024 18:48 | Denislav_Manev | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 270446428 | Jul/14/2024 13:49 | Andreasyan | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 275991110 | Aug/12/2024 20:12 | Maezra6# | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 350927498 | Nov/28/2025 05:19 | edenzz | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 359707403 | Jan/25/2026 14:12 | ASGA_RedSea | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
| 281519994 | Sep/16/2024 20:26 | ltunjic | D - Double Agents | C++17 (GCC 7-32) | Perfect result: 100 points |
| 270461242 | Jul/14/2024 15:47 | OsmanBaran | D - Double Agents | C++20 (GCC 13-64) | Perfect result: 100 points |
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