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ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
|---|---|---|---|---|---|---|
| 2218 | Codeforces Round 1090 (Div. 4) | FINISHED | False | 8100 | 5153096 | April 4, 2026, 2:35 p.m. |
Solved |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
|---|---|---|---|---|---|---|
| ( 19978 ) | D | The 67th OEIS Problem | PROGRAMMING | greedy math number theory |
Macaque, being a terrible problemsetter, decided to search for funny sequences on the OEIS(^{\text{∗}}) one day, so he could gain inspiration for his doomed problemsetting job for the Pan-Mammalian Olympiad in Informatics (PMOI). To his delight, he found one, and thought it would be funny to make you, his loyal tester, solve it: Construct a sequence (a) containing (n) integers such that (\operatorname{gcd}(a_i, a_{i+1})) (^{\text{†}}) is distinct over all (1 \leq i \leq n - 1). It is guaranteed that at least one sequence (a) exists. (^{\text{∗}})Online Encyclopedia of Integer Sequences, the favourite website of math nerds, overly astute testers, and insufficiently rigorous coordinators. (^{\text{†}})(\operatorname{gcd}(x,y)) refers to the greatest common divisor of integers (x) and (y). Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 100)). The description of the test cases follows. The following (t) lines contain one integer (n) ((2 \leq n \leq 10^4)) — the desired length of the sequence. It is guaranteed the sum of (n) over all test cases does not exceed (10^4). For each query, output your answer — a sequence (a) of (n) space-separated integers ((1 \le a_i \le 10^{18})). In the first test case, the sequence (1, 6, 2) is a possible answer. This is because (\gcd(1, 6)) is not equal to (\gcd(6, 2)). In the second test case, the sequence (134, 67, 69, 207, 414) is a possible answer. This is because the values of (\gcd(a_i, a_{i+1})) for all (i) between (1) and (n-1) are distinct. For reference, they are (67), (1), (69) and (207). |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 369766964 | hellowahab | D | April 4, 2026, 4:45 p.m. | OK | C# 10 | TESTS | 5 | 125 | 3891200 | ||
| 369769669 | Siroking | D | April 4, 2026, 4:49 p.m. | OK | C# 13 | TESTS | 5 | 62 | 1433600 | ||
| 369768706 | Chipperlot | D | April 4, 2026, 4:48 p.m. | OK | C# 13 | TESTS | 5 | 62 | 1433600 | ||
| 369778480 | Desh2 | D | April 4, 2026, 5:48 p.m. | OK | C# 13 | TESTS | 5 | 62 | 2457600 | ||
| 369818540 | axitmakwana45 | D | April 5, 2026, 5:06 a.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369811297 | lazycoder22 | D | April 5, 2026, 2:53 a.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369796230 | HarshitThahryani | D | April 4, 2026, 9:11 p.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369793053 | SatSaheb | D | April 4, 2026, 8:15 p.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369788598 | kun_dan | D | April 4, 2026, 7:19 p.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369770039 | kira27 | D | April 4, 2026, 4:52 p.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369766789 | Coderhacks16 | D | April 4, 2026, 4:45 p.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 0 | ||
| 369824697 | Sajid-Ansari | D | April 5, 2026, 6:10 a.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 102400 | ||
| 369819054 | Ziplon | D | April 5, 2026, 5:12 a.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 102400 | ||
| 369800200 | carlsherif | D | April 4, 2026, 10:31 p.m. | OK | C++17 (GCC 7-32) | TESTS | 5 | 15 | 102400 | ||
| 369821509 | Neev11 | D | April 5, 2026, 5:39 a.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 0 | ||
| 369818675 | Ei-kun | D | April 5, 2026, 5:07 a.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 0 | ||
| 369779506 | Het2007 | D | April 4, 2026, 5:56 p.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 0 | ||
| 369773299 | gevak | D | April 4, 2026, 5:10 p.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 0 | ||
| 369767871 | rer2 | D | April 4, 2026, 4:47 p.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 0 | ||
| 369820431 | hk5324519 | D | April 5, 2026, 5:28 a.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 102400 | ||
| 369819827 | Om_Shukla | D | April 5, 2026, 5:21 a.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 102400 | ||
| 369815726 | AngelRuiz | D | April 5, 2026, 4:20 a.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 102400 | ||
| 369798659 | codedetective221b | D | April 4, 2026, 10:02 p.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 102400 | ||
| 369797627 | hoparqeri | D | April 4, 2026, 9:38 p.m. | OK | C++20 (GCC 13-64) | TESTS | 5 | 15 | 102400 | ||
| 369811009 | TarunKoneru | D | April 5, 2026, 2:46 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369808742 | rk_binoy | D | April 5, 2026, 1:55 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369805140 | dev1276 | D | April 5, 2026, 12:28 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369804315 | wahahawa_again | D | April 5, 2026, 12:08 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369802062 | parvaraval27 | D | April 4, 2026, 11:11 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369799937 | manuelferrazc | D | April 4, 2026, 10:27 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369797729 | limon23 | D | April 4, 2026, 9:41 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369796485 | vamsimogalipuvvu | D | April 4, 2026, 9:14 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369788961 | vecna01 | D | April 4, 2026, 7:24 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369788480 | prashiv_g04 | D | April 4, 2026, 7:17 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 5 | 15 | 0 | ||
| 369767583 | VyomWBC | D | April 4, 2026, 4:46 p.m. | OK | GNU C11 | TESTS | 5 | 31 | 0 | ||
| 369769296 | adiop9900 | D | April 4, 2026, 4:49 p.m. | OK | GNU C11 | TESTS | 5 | 46 | 0 | ||
| 369820890 | atharv_gupta29 | D | April 5, 2026, 5:33 a.m. | OK | GNU C11 | TESTS | 5 | 62 | 0 | ||
| 369767251 | rayitus | D | April 4, 2026, 4:46 p.m. | OK | GNU C11 | TESTS | 5 | 78 | 102400 | ||
| 369772117 | Kartikey0323 | D | April 4, 2026, 5:02 p.m. | OK | GNU C11 | TESTS | 5 | 78 | 204800 | ||
| 369769079 | dhiraj_pgcat | D | April 4, 2026, 4:49 p.m. | OK | GNU C11 | TESTS | 5 | 78 | 819200 | ||
| 369767849 | vatsalj17 | D | April 4, 2026, 4:47 p.m. | OK | GNU C11 | TESTS | 5 | 93 | 0 | ||
| 369798371 | K-Squared | D | April 4, 2026, 9:55 p.m. | OK | GNU C11 | TESTS | 5 | 109 | 102400 | ||
| 369791880 | koibhinaamdedo | D | April 4, 2026, 7:59 p.m. | OK | GNU C11 | TESTS | 5 | 125 | 0 | ||
| 369818636 | Anshu_sIngh25 | D | April 5, 2026, 5:07 a.m. | OK | GNU C11 | TESTS | 5 | 140 | 102400 | ||
| 369815066 | irahensa | D | April 5, 2026, 4:09 a.m. | OK | Go | TESTS | 5 | 46 | 102400 | ||
| 369767996 | Nandini_21 | D | April 4, 2026, 4:47 p.m. | OK | Java 21 | TESTS | 5 | 171 | 614400 | ||
| 369819828 | sanny27 | D | April 5, 2026, 5:21 a.m. | OK | Java 21 | TESTS | 5 | 187 | 102400 | ||
| 369804445 | GMatherne | D | April 5, 2026, 12:10 a.m. | OK | Java 21 | TESTS | 5 | 187 | 307200 | ||
| 369821148 | 1.6180339887 | D | April 5, 2026, 5:36 a.m. | OK | Java 21 | TESTS | 5 | 187 | 512000 | ||
| 369766651 | RakeshKayal | D | April 4, 2026, 4:44 p.m. | OK | Java 21 | TESTS | 5 | 187 | 614400 | ||
| 369773716 | ShubhamChaudhary18 | D | April 4, 2026, 5:13 p.m. | OK | Java 21 | TESTS | 5 | 187 | 716800 | ||
| 369802099 | This_Is_Amazing | D | April 4, 2026, 11:12 p.m. | OK | Java 21 | TESTS | 5 | 187 | 1024000 | ||
| 369785206 | hr145cp | D | April 4, 2026, 6:43 p.m. | OK | Java 21 | TESTS | 5 | 187 | 1228800 | ||
| 369810902 | vkisgoat | D | April 5, 2026, 2:43 a.m. | OK | Java 21 | TESTS | 5 | 203 | 614400 | ||
| 369780867 | vpnjain1991 | D | April 4, 2026, 6:06 p.m. | OK | Java 21 | TESTS | 5 | 203 | 614400 | ||
| 369783281 | dgokulbecs | D | April 4, 2026, 6:26 p.m. | OK | Java 8 | TESTS | 5 | 93 | 0 | ||
| 369811502 | NeelmaniPandey09 | D | April 5, 2026, 2:58 a.m. | OK | Java 8 | TESTS | 5 | 109 | 0 | ||
| 369790485 | r3hab.rs | D | April 4, 2026, 7:41 p.m. | OK | Java 8 | TESTS | 5 | 109 | 0 | ||
| 369785565 | panditrittik9 | D | April 4, 2026, 6:46 p.m. | OK | Java 8 | TESTS | 5 | 140 | 0 | ||
| 369769581 | Nitzyy | D | April 4, 2026, 4:49 p.m. | OK | Java 8 | TESTS | 5 | 140 | 0 | ||
| 369767036 | NitheeshV | D | April 4, 2026, 4:45 p.m. | OK | Java 8 | TESTS | 5 | 140 | 0 | ||
| 369766944 | Pratyuxxhh69 | D | April 4, 2026, 4:45 p.m. | OK | Java 8 | TESTS | 5 | 140 | 0 | ||
| 369782406 | naveennagar9617 | D | April 4, 2026, 6:19 p.m. | OK | Java 8 | TESTS | 5 | 187 | 0 | ||
| 369795337 | Hend_Hoseiny | D | April 4, 2026, 8:54 p.m. | OK | Java 8 | TESTS | 5 | 203 | 0 | ||
| 369771141 | K_Keerthana | D | April 4, 2026, 4:57 p.m. | OK | Java 8 | TESTS | 5 | 296 | 39014400 | ||
| 369787986 | SnowballSH | D | April 4, 2026, 7:12 p.m. | OK | Kotlin 2.2 | TESTS | 5 | 171 | 1433600 | ||
| 369785181 | Sruteesh | D | April 4, 2026, 6:43 p.m. | OK | PyPy 3 | TESTS | 5 | 78 | 3891200 | ||
| 369768069 | prafulkatare7 | D | April 4, 2026, 4:47 p.m. | OK | PyPy 3 | TESTS | 5 | 109 | 4198400 | ||
| 369791201 | EarthGo | D | April 4, 2026, 7:50 p.m. | OK | PyPy 3 | TESTS | 5 | 109 | 4608000 | ||
| 369770363 | Amandeep_Yadav | D | April 4, 2026, 4:53 p.m. | OK | PyPy 3 | TESTS | 5 | 125 | 5529600 | ||
| 369776057 | kba_logout | D | April 4, 2026, 5:29 p.m. | OK | PyPy 3-64 | TESTS | 5 | 46 | 1536000 | ||
| 369793826 | ailingsleeps | D | April 4, 2026, 8:27 p.m. | OK | PyPy 3-64 | TESTS | 5 | 46 | 2150400 | ||
| 369770243 | owen-s | D | April 4, 2026, 4:53 p.m. | OK | PyPy 3-64 | TESTS | 5 | 46 | 2560000 | ||
| 369788981 | akhtanov.a | D | April 4, 2026, 7:24 p.m. | OK | PyPy 3-64 | TESTS | 5 | 46 | 3481600 | ||
| 369795833 | NotAlive | D | April 4, 2026, 9:03 p.m. | OK | PyPy 3-64 | TESTS | 5 | 46 | 4300800 | ||
| 369780855 | GPR | D | April 4, 2026, 6:06 p.m. | OK | PyPy 3-64 | TESTS | 5 | 62 | 1433600 | ||
| 369767197 | kba_logout | D | April 4, 2026, 4:46 p.m. | OK | PyPy 3-64 | TESTS | 5 | 62 | 1433600 | ||
| 369804023 | SirMrGuy | D | April 5, 2026, midnight | OK | PyPy 3-64 | TESTS | 5 | 62 | 1536000 | ||
| 369797264 | tar324123 | D | April 4, 2026, 9:30 p.m. | OK | PyPy 3-64 | TESTS | 5 | 62 | 1638400 | ||
| 369822538 | Omarr. | D | April 5, 2026, 5:49 a.m. | OK | PyPy 3-64 | TESTS | 5 | 62 | 2150400 | ||
| 369793022 | cescatti | D | April 4, 2026, 8:15 p.m. | OK | Python 3 | TESTS | 5 | 46 | 204800 | ||
| 369776560 | sourabhkumardubey200 | D | April 4, 2026, 5:32 p.m. | OK | Python 3 | TESTS | 5 | 46 | 1228800 | ||
| 369770244 | MShaheer | D | April 4, 2026, 4:53 p.m. | OK | Python 3 | TESTS | 5 | 46 | 1331200 | ||
| 369770074 | charchit.manwatkar | D | April 4, 2026, 4:52 p.m. | OK | Python 3 | TESTS | 5 | 46 | 1331200 | ||
| 369821526 | Georgy_Hryashev | D | April 5, 2026, 5:40 a.m. | OK | Python 3 | TESTS | 5 | 62 | 1433600 | ||
| 369811559 | DeepS64 | D | April 5, 2026, 2:59 a.m. | OK | Python 3 | TESTS | 5 | 62 | 1433600 | ||
| 369811127 | amagant01 | D | April 5, 2026, 2:49 a.m. | OK | Python 3 | TESTS | 5 | 62 | 1740800 | ||
| 369819203 | eugalt | D | April 5, 2026, 5:14 a.m. | OK | Python 3 | TESTS | 5 | 62 | 1945600 | ||
| 369784203 | BackToTheOldHouse | D | April 4, 2026, 6:34 p.m. | OK | Python 3 | TESTS | 5 | 62 | 2150400 | ||
| 369768052 | Thilagaraaj | D | April 4, 2026, 4:47 p.m. | OK | Python 3 | TESTS | 5 | 62 | 2969600 | ||
| 369770541 | aragami_3070 | D | April 4, 2026, 4:54 p.m. | OK | Rust 2021 | TESTS | 5 | 31 | 0 | ||
| 369815750 | Spheniscine | D | April 5, 2026, 4:21 a.m. | OK | Rust 2021 | TESTS | 5 | 46 | 0 | ||
| 369769084 | s5kxlqb86ue7vh4 | D | April 4, 2026, 4:49 p.m. | OK | Rust 2024 | TESTS | 5 | 31 | 0 | ||
| 369810197 | 0x81 | D | April 5, 2026, 2:25 a.m. | OK | Rust 2024 | TESTS | 5 | 46 | 0 |
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