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ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
|---|---|---|---|---|---|---|
| 2244 | Codeforces Round 1109 (Div. 3) | FINISHED | False | 8100 | 2561084 | July 14, 2026, 2:35 p.m. |
Solved |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
|---|---|---|---|---|---|---|
| ( 16698 ) | C | Stepan and Permutation | PROGRAMMING | constructive algorithms dsu greedy math number theory sortings |
Stepan found a permutation (p) of length (n). Of course, he decided to sort it. To make the process more interesting, he chose two positive integers (x) and (y) ((x + y \le n)) and defined a rule for swapping elements. In one move, Stepan can choose two indices (i) and (j) ((1 \le i, j \le n)) and swap the elements (p_i) and (p_j) if at least one of the following conditions holds: (|i - j| = x) (|i - j| = y) Stepan wants to know whether it is possible to sort the permutation in ascending order using any number of such operations. Help him answer this question. The first line contains a single integer (t) ((1 \le t \le 10^4)) — the number of test cases. The first line of each test case contains three integers (n), (x), and (y) ((1 \le x, y \le n \le 2 \cdot 10^5), (x + y \le n)) — the length of the array and the numbers chosen by Stepan. The second line of each test case contains (n) integers (p_i) ((1 \le p_i \le n)) — the array (p); it is guaranteed that (p) is a permutation. It is guaranteed that the sum of (n) over all test cases does not exceed (2 \cdot 10^5). For each test case, output " YES " if it is possible to sort the permutation with the given (x) and (y), and " NO " otherwise. You may output each letter in any case (lowercase or uppercase). For example, the strings " yEs ", " yes ", " Yes ", and " YES " will be accepted. |
| Codeforces Round 1109 (Div. 3) Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 382817354 | tarant | C | July 15, 2026, 3:56 p.m. | OK | C# 13 | TESTS | 16 | 125 | 22937600 | ||
| 382778640 | mban259 | C | July 15, 2026, 11:17 a.m. | OK | C# 13 | TESTS | 16 | 156 | 32051200 | ||
| 382702889 | yuki_Ishijo | C | July 14, 2026, 6:56 p.m. | OK | C# 13 | TESTS | 16 | 171 | 26112000 | ||
| 382886170 | Myster.K | C | July 16, 2026, 5:12 a.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 46 | 0 | ||
| 382873644 | xmxz | C | July 16, 2026, 2:57 a.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 46 | 0 | ||
| 382885249 | prathamkashyap | C | July 16, 2026, 5:01 a.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382883450 | chaos250 | C | July 16, 2026, 4:42 a.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382864554 | adarsh.kumariitbhu | C | July 16, 2026, 12:58 a.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382864400 | gabrielduzz | C | July 16, 2026, 12:55 a.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382838803 | CopeAndSeethe | C | July 15, 2026, 6:32 p.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382838797 | upadhyaysanat8 | C | July 15, 2026, 6:32 p.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382833304 | nealzane | C | July 15, 2026, 5:51 p.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382830456 | Avik2903 | C | July 15, 2026, 5:30 p.m. | OK | C++17 (GCC 7-32) | TESTS | 16 | 62 | 0 | ||
| 382887052 | guobohan | C | July 16, 2026, 5:24 a.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 0 | ||
| 382804466 | _Rafi__ | C | July 15, 2026, 2:29 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 0 | ||
| 382799644 | Aka_coder1 | C | July 15, 2026, 1:56 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 0 | ||
| 382775514 | BE_SO_ | C | July 15, 2026, 10:51 a.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 0 | ||
| 382717396 | nasser_10 | C | July 14, 2026, 11:46 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 0 | ||
| 382697085 | al_ok | C | July 14, 2026, 6:02 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 0 | ||
| 382855393 | mefeldman | C | July 15, 2026, 10:17 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 102400 | ||
| 382691143 | youssef97_ | C | July 14, 2026, 5:15 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 921600 | ||
| 382819815 | Dorra1234 | C | July 15, 2026, 4:13 p.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 46 | 24064000 | ||
| 382879207 | Sahilsajwan | C | July 16, 2026, 3:54 a.m. | OK | C++20 (GCC 13-64) | TESTS | 16 | 62 | 0 | ||
| 382842753 | Smallplane | C | July 15, 2026, 7:11 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 31 | 2150400 | ||
| 382884828 | cwswastik | C | July 16, 2026, 4:56 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382882998 | Kiran_Kumar_Thakur | C | July 16, 2026, 4:37 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382873208 | jzcqqqqq | C | July 16, 2026, 2:51 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382868940 | lisaibo | C | July 16, 2026, 1:54 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382860544 | yashtwt29 | C | July 15, 2026, 11:47 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382848243 | luca.traian.barbulescu | C | July 15, 2026, 8:24 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382844746 | Himanshi17 | C | July 15, 2026, 7:35 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382841075 | CrJayden07 | C | July 15, 2026, 6:53 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382830497 | LordSegway | C | July 15, 2026, 5:31 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 16 | 46 | 0 | ||
| 382827398 | JagannathHari | C | July 15, 2026, 5:08 p.m. | OK | GNU C11 | TESTS | 16 | 46 | 2457600 | ||
| 382815997 | based | C | July 15, 2026, 3:44 p.m. | OK | GNU C11 | TESTS | 16 | 62 | 3174400 | ||
| 382691240 | dixen_mayaZ | C | July 14, 2026, 5:16 p.m. | OK | GNU C11 | TESTS | 16 | 78 | 9625600 | ||
| 382791589 | 18ss | C | July 15, 2026, 12:59 p.m. | OK | Go | TESTS | 16 | 46 | 3993600 | ||
| 382690678 | uvwxz | C | July 14, 2026, 5:12 p.m. | OK | Go | TESTS | 16 | 93 | 2969600 | ||
| 382726813 | link1k | C | July 15, 2026, 2:43 a.m. | OK | Go | TESTS | 16 | 93 | 3072000 | ||
| 382735909 | uvwxz | C | July 15, 2026, 4:21 a.m. | OK | Go | TESTS | 16 | 93 | 38195200 | ||
| 382719766 | monte_carlo | C | July 15, 2026, 12:46 a.m. | OK | Go | TESTS | 16 | 125 | 22528000 | ||
| 382738034 | Siddeshwer_Reddy | C | July 15, 2026, 4:46 a.m. | OK | Java 21 | TESTS | 16 | 171 | 614400 | ||
| 382741528 | ym805510 | C | July 15, 2026, 5:24 a.m. | OK | Java 21 | TESTS | 16 | 187 | 512000 | ||
| 382697060 | Subham_TLE | C | July 14, 2026, 6:02 p.m. | OK | Java 21 | TESTS | 16 | 218 | 307200 | ||
| 382796410 | sriram_18 | C | July 15, 2026, 1:35 p.m. | OK | Java 21 | TESTS | 16 | 218 | 1331200 | ||
| 382804968 | Cartoonshow | C | July 15, 2026, 2:34 p.m. | OK | Java 21 | TESTS | 16 | 234 | 1126400 | ||
| 382708531 | nihar_15 | C | July 14, 2026, 8:06 p.m. | OK | Java 21 | TESTS | 16 | 234 | 1228800 | ||
| 382794074 | saket94 | C | July 15, 2026, 1:18 p.m. | OK | Java 21 | TESTS | 16 | 234 | 2355200 | ||
| 382736507 | Nobita-Niyan | C | July 15, 2026, 4:28 a.m. | OK | Java 21 | TESTS | 16 | 250 | 409600 | ||
| 382815475 | LordKRiS | C | July 15, 2026, 3:41 p.m. | OK | Java 21 | TESTS | 16 | 250 | 819200 | ||
| 382809263 | rajsingh18904 | C | July 15, 2026, 3 p.m. | OK | Java 21 | TESTS | 16 | 250 | 819200 | ||
| 382778308 | sanju_rajora | C | July 15, 2026, 11:14 a.m. | OK | Java 8 | TESTS | 16 | 156 | 2560000 | ||
| 382734878 | vikasmp | C | July 15, 2026, 4:08 a.m. | OK | Java 8 | TESTS | 16 | 343 | 0 | ||
| 382831249 | e_ditzz_786 | C | July 15, 2026, 5:36 p.m. | OK | Java 8 | TESTS | 16 | 421 | 0 | ||
| 382738631 | Vishalll_ | C | July 15, 2026, 4:53 a.m. | OK | Java 8 | TESTS | 16 | 593 | 41881600 | ||
| 382823971 | tirth_savsani | C | July 15, 2026, 4:44 p.m. | OK | Java 8 | TESTS | 16 | 625 | 65945600 | ||
| 382690695 | Slesha_aineni | C | July 14, 2026, 5:12 p.m. | OK | Java 8 | TESTS | 16 | 1078 | 93696000 | ||
| 382830862 | pin7gu | C | July 15, 2026, 5:34 p.m. | OK | Kotlin 1.7 | TESTS | 16 | 281 | 512000 | ||
| 382697966 | ElAnonimo11 | C | July 14, 2026, 6:11 p.m. | OK | Kotlin 2.2 | TESTS | 16 | 250 | 10854400 | ||
| 382698112 | dannieko02 | C | July 14, 2026, 6:12 p.m. | OK | PyPy 3 | TESTS | 16 | 171 | 15257600 | ||
| 382714362 | WalrusRamen21 | C | July 14, 2026, 10:21 p.m. | OK | PyPy 3 | TESTS | 16 | 296 | 12390400 | ||
| 382885456 | sijin_ | C | July 16, 2026, 5:04 a.m. | OK | PyPy 3 | TESTS | 16 | 312 | 12492800 | ||
| 382694910 | phoenixdumble | C | July 14, 2026, 5:42 p.m. | OK | PyPy 3-64 | TESTS | 16 | 93 | 16896000 | ||
| 382718403 | OmarMoBadr | C | July 15, 2026, 12:12 a.m. | OK | PyPy 3-64 | TESTS | 16 | 93 | 20787200 | ||
| 382694932 | AlgoAbhishek | C | July 14, 2026, 5:43 p.m. | OK | PyPy 3-64 | TESTS | 16 | 93 | 21094400 | ||
| 382842446 | profenc1ng | C | July 15, 2026, 7:08 p.m. | OK | PyPy 3-64 | TESTS | 16 | 93 | 27648000 | ||
| 382706513 | enzi1337 | C | July 14, 2026, 7:39 p.m. | OK | PyPy 3-64 | TESTS | 16 | 109 | 16076800 | ||
| 382700171 | Adarsh_004 | C | July 14, 2026, 6:30 p.m. | OK | PyPy 3-64 | TESTS | 16 | 109 | 17203200 | ||
| 382781444 | EliteCoder_77 | C | July 15, 2026, 11:41 a.m. | OK | PyPy 3-64 | TESTS | 16 | 109 | 18944000 | ||
| 382835122 | RerDev | C | July 15, 2026, 6:05 p.m. | OK | PyPy 3-64 | TESTS | 16 | 109 | 20377600 | ||
| 382839294 | egortme | C | July 15, 2026, 6:36 p.m. | OK | PyPy 3-64 | TESTS | 16 | 109 | 20582400 | ||
| 382775245 | hyper1423 | C | July 15, 2026, 10:49 a.m. | OK | PyPy 3-64 | TESTS | 16 | 109 | 20582400 | ||
| 382692874 | JesusLlaven | C | July 14, 2026, 5:25 p.m. | OK | Python 2 | TESTS | 16 | 156 | 8908800 | ||
| 382825765 | madhur_rathod | C | July 15, 2026, 4:57 p.m. | OK | Python 3 | TESTS | 16 | 93 | 23859200 | ||
| 382799313 | orphyx07 | C | July 15, 2026, 1:54 p.m. | OK | Python 3 | TESTS | 16 | 109 | 23961600 | ||
| 382834407 | m3hm3h | C | July 15, 2026, 6 p.m. | OK | Python 3 | TESTS | 16 | 125 | 14950400 | ||
| 382782829 | lost_000 | C | July 15, 2026, 11:53 a.m. | OK | Python 3 | TESTS | 16 | 125 | 21094400 | ||
| 382828513 | HarshitGupta314 | C | July 15, 2026, 5:16 p.m. | OK | Python 3 | TESTS | 16 | 125 | 23859200 | ||
| 382821667 | Sanjai._.07 | C | July 15, 2026, 4:27 p.m. | OK | Python 3 | TESTS | 16 | 140 | 21094400 | ||
| 382728474 | JagannathHari | C | July 15, 2026, 3:05 a.m. | OK | Python 3 | TESTS | 16 | 140 | 21094400 | ||
| 382691779 | MaryaTawfik | C | July 14, 2026, 5:19 p.m. | OK | Python 3 | TESTS | 16 | 140 | 24064000 | ||
| 382838112 | Likith1206 | C | July 15, 2026, 6:27 p.m. | OK | Python 3 | TESTS | 16 | 156 | 21094400 | ||
| 382781713 | Dreamgamer5000 | C | July 15, 2026, 11:44 a.m. | OK | Python 3 | TESTS | 16 | 156 | 23552000 | ||
| 382792633 | 18ss | C | July 15, 2026, 1:08 p.m. | OK | Ruby 3 | TESTS | 16 | 250 | 33484800 | ||
| 382815301 | 0x81 | C | July 15, 2026, 3:39 p.m. | OK | Rust 2024 | TESTS | 16 | 46 | 409600 | ||
| 382780919 | typedef_struct | C | July 15, 2026, 11:36 a.m. | OK | Rust 2024 | TESTS | 16 | 46 | 819200 | ||
| 382818675 | ivantdev | C | July 15, 2026, 4:05 p.m. | OK | Rust 2024 | TESTS | 16 | 62 | 819200 | ||
| 382701101 | karelispanagiotis | C | July 14, 2026, 6:38 p.m. | OK | Rust 2024 | TESTS | 16 | 62 | 3993600 |
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