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ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
|---|---|---|---|---|---|---|
| 2218 | Codeforces Round 1090 (Div. 4) | FINISHED | False | 8100 | 5066687 | April 4, 2026, 2:35 p.m. |
Solved |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
|---|---|---|---|---|---|---|
| ( 28723 ) | C | The 67th Permutation Problem | PROGRAMMING | constructive algorithms greedy math |
Upon arriving at school, Macaque was rather brusquely greeted by his friend, AG-88301, the latter having skived off his homework due to spending the entire night yapping to an unsuspecting stranger about his groundbreaking work on a proof of the Collatz conjecture and his (67)-th unreciprocated love interest. So, as had become customary, AG-88301, with ever decreasing levels of gratitude or appreciation, made Macaque do his homework for him. At this point, Macaque had had enough, and turned to his minions (you guys!) to solve AG-88301's homework task. You are given an integer (n). You must construct a permutation(^{\text{∗}}) of length (3n) such that, if you partition the permutation into (n) contiguous blocks with (3) elements, the sum of the medians(^{\text{†}}) of these blocks is maximised . More formally, you must construct a permutation (p) of length (3n) such that (\sum_{i=0}^{n-1}\operatorname{median}(a_{3i+1},a_{3i+2},a_{3i+3})) is maximised. If there are multiple possible (p), output any. (^{\text{∗}})A permutation of length (n) is an array consisting of (n) distinct integers from (1) to (n) in arbitrary order. For example, (2,3,1,5,4) is a permutation, but (1,2,2) is not a permutation ((2) appears twice in the array), and (1,3,4) is also not a permutation ((n=3) but there is (4) in the array). (^{\text{†}})The median of an array (b) containing (3) elements is the (2)-nd element after (b) is sorted in non-decreasing order. Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 10^4)). The description of the test cases follows. The first and only line of each test case contains an integer (n) ((1 \leq n \leq 10^5)). It is guaranteed that the sum of (3n) does not exceed (3 \cdot 10^5) over all test cases. For each test case, output a permutation (p) such that |
| Codeforces Round 1090 (Div. 4) Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 369778446 | Dream-On | C | April 4, 2026, 5:47 p.m. | OK | C# 13 | TESTS | 4 | 62 | 17510400 | ||
| 369816146 | chrisTris | C | April 5, 2026, 4:28 a.m. | OK | C# 13 | TESTS | 4 | 109 | 13414400 | ||
| 369821156 | WhiteGoose | C | April 5, 2026, 5:36 a.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369817342 | _Aadarsh_ | C | April 5, 2026, 4:49 a.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369815779 | MAKX-Dev | C | April 5, 2026, 4:21 a.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369783849 | Aykhan_Kh | C | April 4, 2026, 6:31 p.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369780190 | S_Deepak24 | C | April 4, 2026, 6:01 p.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369773901 | ansh__malde | C | April 4, 2026, 5:14 p.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369767124 | ___Youssef___ | C | April 4, 2026, 4:45 p.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 0 | ||
| 369809622 | spiderweb1 | C | April 5, 2026, 2:11 a.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 102400 | ||
| 369791724 | DerpyBlobFish | C | April 4, 2026, 7:57 p.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 102400 | ||
| 369778483 | 369Hz | C | April 4, 2026, 5:48 p.m. | OK | C++17 (GCC 7-32) | TESTS | 4 | 31 | 102400 | ||
| 369813288 | ObeyMeWorld | C | April 5, 2026, 3:35 a.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369804475 | y4ssineWA | C | April 5, 2026, 12:12 a.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369792908 | pivnuaga | C | April 4, 2026, 8:13 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369792422 | krishvamja07 | C | April 4, 2026, 8:07 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369790686 | samyukta | C | April 4, 2026, 7:44 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369790277 | RAGROk | C | April 4, 2026, 7:39 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369784694 | pa4v_7 | C | April 4, 2026, 6:39 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369781427 | Yash_Dandotiya | C | April 4, 2026, 6:11 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369779664 | L_lawliet13 | C | April 4, 2026, 5:57 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369777829 | f20250826 | C | April 4, 2026, 5:42 p.m. | OK | C++20 (GCC 13-64) | TESTS | 4 | 31 | 0 | ||
| 369782054 | debuggingLife | C | April 4, 2026, 6:16 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 15 | 0 | ||
| 369773060 | Bashar._.Kamel | C | April 4, 2026, 5:08 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 15 | 102400 | ||
| 369824545 | yfy1109 | C | April 5, 2026, 6:09 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369823934 | ANirudha27 | C | April 5, 2026, 6:03 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369822831 | maddy03 | C | April 5, 2026, 5:52 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369816860 | udayvalera | C | April 5, 2026, 4:41 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369813792 | sharv.mahajan | C | April 5, 2026, 3:44 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369813321 | xndr | C | April 5, 2026, 3:35 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369809747 | luanzito | C | April 5, 2026, 2:15 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369808498 | THISNAMEISMINE | C | April 5, 2026, 1:48 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 4 | 31 | 0 | ||
| 369783759 | AnshumanCodes | C | April 4, 2026, 6:30 p.m. | OK | GNU C11 | TESTS | 4 | 437 | 0 | ||
| 369815804 | 7asauf | C | April 5, 2026, 4:22 a.m. | OK | GNU C11 | TESTS | 4 | 453 | 0 | ||
| 369786061 | r0ck1n70sh | C | April 4, 2026, 6:51 p.m. | OK | GNU C11 | TESTS | 4 | 453 | 0 | ||
| 369775094 | rajkeshavmi4 | C | April 4, 2026, 5:21 p.m. | OK | GNU C11 | TESTS | 4 | 468 | 0 | ||
| 369766592 | Trimax_07 | C | April 4, 2026, 4:44 p.m. | OK | GNU C11 | TESTS | 4 | 468 | 0 | ||
| 369796974 | K-Squared | C | April 4, 2026, 9:24 p.m. | OK | GNU C11 | TESTS | 4 | 468 | 1024000 | ||
| 369771824 | Kartikey0323 | C | April 4, 2026, 5:01 p.m. | OK | GNU C11 | TESTS | 4 | 843 | 0 | ||
| 369768215 | salmanarafin1076 | C | April 4, 2026, 4:47 p.m. | OK | GNU C11 | TESTS | 4 | 1203 | 1228800 | ||
| 369796186 | marcolai0103 | C | April 4, 2026, 9:10 p.m. | OK | GNU C11 | TESTS | 4 | 1234 | 0 | ||
| 369771210 | EswarPenugonda | C | April 4, 2026, 4:57 p.m. | OK | GNU C11 | TESTS | 4 | 1234 | 1945600 | ||
| 369815307 | tylerdao | C | April 5, 2026, 4:13 a.m. | OK | Go | TESTS | 4 | 46 | 4198400 | ||
| 369792400 | GPlatinumG | C | April 4, 2026, 8:06 p.m. | OK | Haskell | TESTS | 4 | 218 | 0 | ||
| 369774471 | Jiyan0207 | C | April 4, 2026, 5:17 p.m. | OK | Java 21 | TESTS | 4 | 187 | 1331200 | ||
| 369768075 | AETH3R | C | April 4, 2026, 4:47 p.m. | OK | Java 21 | TESTS | 4 | 203 | 102400 | ||
| 369814595 | Wu_ | C | April 5, 2026, 3:59 a.m. | OK | Java 21 | TESTS | 4 | 203 | 204800 | ||
| 369802261 | This_Is_Amazing | C | April 4, 2026, 11:17 p.m. | OK | Java 21 | TESTS | 4 | 203 | 512000 | ||
| 369807883 | gantavya_bansal1 | C | April 5, 2026, 1:36 a.m. | OK | Java 21 | TESTS | 4 | 218 | 409600 | ||
| 369767231 | mahendra3201 | C | April 4, 2026, 4:46 p.m. | OK | Java 21 | TESTS | 4 | 218 | 614400 | ||
| 369788934 | Dinesh_1107 | C | April 4, 2026, 7:23 p.m. | OK | Java 21 | TESTS | 4 | 218 | 921600 | ||
| 369787389 | yashtk_14 | C | April 4, 2026, 7:05 p.m. | OK | Java 21 | TESTS | 4 | 218 | 1228800 | ||
| 369801124 | jaysuryaray1998 | C | April 4, 2026, 10:49 p.m. | OK | Java 21 | TESTS | 4 | 218 | 2969600 | ||
| 369820497 | Omkaarr | C | April 5, 2026, 5:28 a.m. | OK | Java 21 | TESTS | 4 | 218 | 13516800 | ||
| 369810715 | NeelmaniPandey09 | C | April 5, 2026, 2:39 a.m. | OK | Java 8 | TESTS | 4 | 125 | 4710400 | ||
| 369784133 | abhi... | C | April 4, 2026, 6:33 p.m. | OK | Java 8 | TESTS | 4 | 140 | 3788800 | ||
| 369777903 | dgokulbecs | C | April 4, 2026, 5:43 p.m. | OK | Java 8 | TESTS | 4 | 140 | 4710400 | ||
| 369768925 | kunal_nerkar | C | April 4, 2026, 4:49 p.m. | OK | Java 8 | TESTS | 4 | 140 | 4710400 | ||
| 369821366 | Megh_Coder | C | April 5, 2026, 5:38 a.m. | OK | Java 8 | TESTS | 4 | 265 | 0 | ||
| 369783853 | panditrittik9 | C | April 4, 2026, 6:31 p.m. | OK | Java 8 | TESTS | 4 | 265 | 0 | ||
| 369770888 | samamn_varshney | C | April 4, 2026, 4:56 p.m. | OK | Java 8 | TESTS | 4 | 312 | 0 | ||
| 369777856 | shashank77t | C | April 4, 2026, 5:42 p.m. | OK | Java 8 | TESTS | 4 | 359 | 0 | ||
| 369769645 | CROKKED | C | April 4, 2026, 4:49 p.m. | OK | Kotlin 2.2 | TESTS | 4 | 140 | 6553600 | ||
| 369786264 | SnowballSH | C | April 4, 2026, 6:53 p.m. | OK | Kotlin 2.2 | TESTS | 4 | 218 | 15360000 | ||
| 369769373 | fake1111 | C | April 4, 2026, 4:49 p.m. | OK | Node.js | TESTS | 4 | 875 | 52019200 | ||
| 369768409 | vamsik1436 | C | April 4, 2026, 4:48 p.m. | OK | PyPy 3 | TESTS | 4 | 265 | 14950400 | ||
| 369775117 | kpoojitha05 | C | April 4, 2026, 5:22 p.m. | OK | PyPy 3 | TESTS | 4 | 296 | 10137600 | ||
| 369774655 | MohamedAhmed365 | C | April 4, 2026, 5:18 p.m. | OK | PyPy 3 | TESTS | 4 | 312 | 21504000 | ||
| 369824300 | Jhinigami | C | April 5, 2026, 6:06 a.m. | OK | PyPy 3 | TESTS | 4 | 406 | 11264000 | ||
| 369775312 | Gilberto_RC | C | April 4, 2026, 5:23 p.m. | OK | PyPy 3-64 | TESTS | 4 | 78 | 10342400 | ||
| 369820844 | 7a7a68 | C | April 5, 2026, 5:32 a.m. | OK | PyPy 3-64 | TESTS | 4 | 78 | 18944000 | ||
| 369775769 | curss | C | April 4, 2026, 5:26 p.m. | OK | PyPy 3-64 | TESTS | 4 | 78 | 20480000 | ||
| 369801281 | ds_infinity | C | April 4, 2026, 10:52 p.m. | OK | PyPy 3-64 | TESTS | 4 | 78 | 23244800 | ||
| 369786511 | changbin_ | C | April 4, 2026, 6:56 p.m. | OK | PyPy 3-64 | TESTS | 4 | 93 | 3788800 | ||
| 369819569 | manhhomienbienthuy | C | April 5, 2026, 5:18 a.m. | OK | PyPy 3-64 | TESTS | 4 | 93 | 8499200 | ||
| 369803905 | SirMrGuy | C | April 4, 2026, 11:58 p.m. | OK | PyPy 3-64 | TESTS | 4 | 93 | 9728000 | ||
| 369787453 | Okpere_Jr | C | April 4, 2026, 7:06 p.m. | OK | PyPy 3-64 | TESTS | 4 | 93 | 10240000 | ||
| 369776545 | GPR | C | April 4, 2026, 5:32 p.m. | OK | PyPy 3-64 | TESTS | 4 | 93 | 10342400 | ||
| 369777104 | mawo78 | C | April 4, 2026, 5:36 p.m. | OK | PyPy 3-64 | TESTS | 4 | 93 | 10444800 | ||
| 369811033 | amagant01 | C | April 5, 2026, 2:47 a.m. | OK | Python 3 | TESTS | 4 | 93 | 22630400 | ||
| 369778588 | ayanadastra | C | April 4, 2026, 5:49 p.m. | OK | Python 3 | TESTS | 4 | 109 | 26521600 | ||
| 369795895 | omu47 | C | April 4, 2026, 9:05 p.m. | OK | Python 3 | TESTS | 4 | 140 | 33075200 | ||
| 369805043 | 0x3f_xuemei | C | April 5, 2026, 12:27 a.m. | OK | Python 3 | TESTS | 4 | 156 | 11264000 | ||
| 369795498 | aguirrehdezma | C | April 4, 2026, 8:56 p.m. | OK | Python 3 | TESTS | 4 | 187 | 307200 | ||
| 369779824 | bhoomikagarg3607 | C | April 4, 2026, 5:58 p.m. | OK | Python 3 | TESTS | 4 | 250 | 17305600 | ||
| 369784747 | notactual_jim | C | April 4, 2026, 6:39 p.m. | OK | Python 3 | TESTS | 4 | 281 | 307200 | ||
| 369810986 | Hypo_Coder | C | April 5, 2026, 2:46 a.m. | OK | Python 3 | TESTS | 4 | 281 | 17305600 | ||
| 369798368 | abhinavnarula052 | C | April 4, 2026, 9:55 p.m. | OK | Python 3 | TESTS | 4 | 281 | 17305600 | ||
| 369788624 | karthikbatta143 | C | April 4, 2026, 7:19 p.m. | OK | Python 3 | TESTS | 4 | 281 | 19660800 | ||
| 369815548 | Spheniscine | C | April 5, 2026, 4:17 a.m. | OK | Rust 2021 | TESTS | 4 | 31 | 102400 | ||
| 369766315 | Siddham_N | C | April 4, 2026, 4:44 p.m. | OK | Rust 2024 | TESTS | 4 | 31 | 0 | ||
| 369809506 | 0x81 | C | April 5, 2026, 2:09 a.m. | OK | Rust 2024 | TESTS | 4 | 78 | 4096000 |
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