Solutions are presented as using the least memory and the fastest execution time. It also takes the top 10 most recent solutions from each language. If you want to limit to a specific index, click the "Solved" button and go to that problem.
ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
---|---|---|---|---|---|---|
1344 | Codeforces Round 639 (Div. 1) | FINISHED | False | 8100 | 148577111 | May 6, 2020, 2:35 p.m. |
Solved$ |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
---|---|---|---|---|---|---|
( 15792 ) | A | Hilbert's Hotel | PROGRAMMING | math number theory sortings | 1600 |
B'Hilbert 's Hotel is a very unusual hotel since the number of rooms is infinite! In fact, there is exactly one room for every integer, including zero and negative integers. Even stranger, the hotel is currently at full capacity, meaning there is exactly one guest in every room. The hotel 's manager, David Hilbert himself, decides he wants to shuffle the guests around because he thinks this will create a vacancy (a room without a guest). For any integer k and positive integer n , let k bmod n denote the remainder when k is divided by n . More formally, r=k bmod n is the smallest non-negative integer such that k-r is divisible by n . It always holds that 0 <= k bmod n <= n-1 . For example, 100 bmod 12=4 and (-1337) bmod 3=1 . Then the shuffling works as follows. There is an array of n integers a_0,a_1, ldots,a_{n-1} . Then for each integer k , the guest in room k is moved to room number k+a_{k bmod n} . After this shuffling process, determine if there is still exactly one guest assigned to each room. That is, there are no vacancies or rooms with multiple guests. Each test consists of multiple test cases. The first line contains a single integer t ( 1 <= t <= 10^4 ) -- the number of test cases. Next 2t lines contain descriptions of test cases. The first line of each test case contains a single integer n ( 1 <= n <= 2 cdot 10^5 ) -- the length of the array. The second line of each test case contains n integers a_0,a_1, ldots,a_{n-1} ( -10^9 <= a_i <= 10^9 ). It is guaranteed that the sum of n over all test cases does not exceed 2 cdot 10^5 . For each test case, output a single line containing "YES" if there is exactly one guest assigned to each room after the shuffling process, or "NO" otherwise. You can print each letter in any case (upper or lower). In the first test case, every guest is shifted by 14 rooms, so t'... |
Codeforces Round #639 Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
---|---|---|---|---|---|---|---|---|---|---|---|
79162169 | hos.lyric | A | May 6, 2020, 2:54 p.m. | OK | D | TESTS | 26 | 109 | 18227200 | 1600 | |
79151633 | Gassa | A | May 6, 2020, 2:41 p.m. | OK | D | TESTS | 26 | 109 | 18227200 | 1600 | |
79162666 | physics0523 | A | May 6, 2020, 2:54 p.m. | OK | GNU C11 | TESTS | 26 | 124 | 28876800 | 1600 | |
79151033 | LJC00118 | A | May 6, 2020, 2:41 p.m. | OK | GNU C++11 | TESTS | 26 | 31 | 4710400 | 1600 | |
79244529 | Frame233 | A | May 7, 2020, 7:39 a.m. | OK | GNU C++11 | TESTS | 26 | 31 | 4710400 | 1600 | |
79151859 | Chtholly_Froggy | A | May 6, 2020, 2:42 p.m. | OK | GNU C++11 | TESTS | 26 | 31 | 5529600 | 1600 | |
79155456 | DWAE86 | A | May 6, 2020, 2:46 p.m. | OK | GNU C++11 | TESTS | 26 | 31 | 5529600 | 1600 | |
79152054 | Binary_Search_Tree | A | May 6, 2020, 2:42 p.m. | OK | GNU C++11 | TESTS | 26 | 31 | 8908800 | 1600 | |
79151043 | Fuyuki | A | May 6, 2020, 2:41 p.m. | OK | GNU C++11 | TESTS | 26 | 31 | 11980800 | 1600 | |
79161913 | Golden_Time | A | May 6, 2020, 2:53 p.m. | OK | GNU C++11 | TESTS | 26 | 46 | 3891200 | 1600 | |
79150700 | huhaoo | A | May 6, 2020, 2:40 p.m. | OK | GNU C++11 | TESTS | 26 | 46 | 4505600 | 1600 | |
79252741 | wasa855 | A | May 7, 2020, 9:15 a.m. | OK | GNU C++11 | TESTS | 26 | 46 | 4710400 | 1600 | |
79431829 | Rainbow_sjy | A | May 9, 2020, 5:09 a.m. | OK | GNU C++11 | TESTS | 26 | 46 | 4710400 | 1600 | |
79156438 | NotaMotuaQAQ | A | May 6, 2020, 2:47 p.m. | OK | GNU C++14 | TESTS | 26 | 31 | 8704000 | 1600 | |
79153230 | danya090699 | A | May 6, 2020, 2:43 p.m. | OK | GNU C++14 | TESTS | 26 | 62 | 3891200 | 1600 | |
79172938 | dixitgarg | A | May 6, 2020, 3:10 p.m. | OK | GNU C++14 | TESTS | 26 | 62 | 5529600 | 1600 | |
79209281 | hackerwizard | A | May 6, 2020, 9:28 p.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79208185 | hackerwizard | A | May 6, 2020, 9 p.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79155990 | kimjihoon | A | May 6, 2020, 2:46 p.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79154616 | Minnakhmetov | A | May 6, 2020, 2:45 p.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79154601 | _no0B | A | May 6, 2020, 2:45 p.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79151985 | CodePlatina | A | May 6, 2020, 2:42 p.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79229484 | Invisible_Shadow | A | May 7, 2020, 4:40 a.m. | OK | GNU C++14 | TESTS | 26 | 77 | 3891200 | 1600 | |
79149721 | LayCurse | A | May 6, 2020, 2:39 p.m. | OK | GNU C++17 | TESTS | 26 | 46 | 7475200 | 1600 | |
79376086 | _andyli | A | May 8, 2020, 12:11 p.m. | OK | GNU C++17 | TESTS | 26 | 46 | 9523200 | 1600 | |
79342962 | interestingLSY | A | May 8, 2020, 4:28 a.m. | OK | GNU C++17 | TESTS | 26 | 46 | 10035200 | 1600 | |
79151656 | SoulTch | A | May 6, 2020, 2:41 p.m. | OK | GNU C++17 | TESTS | 26 | 62 | 3891200 | 1600 | |
79421289 | saiful.dh | A | May 8, 2020, 11:35 p.m. | OK | GNU C++17 | TESTS | 26 | 62 | 4096000 | 1600 | |
79150477 | Vedensky | A | May 6, 2020, 2:40 p.m. | OK | GNU C++17 | TESTS | 26 | 62 | 4505600 | 1600 | |
79221955 | thtsshz_bgwrswh | A | May 7, 2020, 2:33 a.m. | OK | GNU C++17 | TESTS | 26 | 62 | 4710400 | 1600 | |
79157826 | 1252351876 | A | May 6, 2020, 2:48 p.m. | OK | GNU C++17 | TESTS | 26 | 62 | 5324800 | 1600 | |
79154176 | CharacterMe | A | May 6, 2020, 2:45 p.m. | OK | GNU C++17 | TESTS | 26 | 77 | 3788800 | 1600 | |
79329396 | Nanored | A | May 7, 2020, 9:50 p.m. | OK | GNU C++17 | TESTS | 26 | 77 | 3891200 | 1600 | |
79165797 | sammyMaX | A | May 6, 2020, 2:59 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 46 | 4300800 | 1600 | |
79152407 | Agua_Podrida | A | May 6, 2020, 2:42 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5120000 | 1600 | |
79151468 | saketh | A | May 6, 2020, 2:41 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5120000 | 1600 | |
79154030 | kessido | A | May 6, 2020, 2:44 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5120000 | 1600 | |
79177528 | Scissors_Ss | A | May 6, 2020, 3:19 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5222400 | 1600 | |
79155820 | neko_nyaaaaaaaaaaaaaaaaa | A | May 6, 2020, 2:46 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5939200 | 1600 | |
79153130 | fedoseev.timofey | A | May 6, 2020, 2:43 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5939200 | 1600 | |
79150632 | lightseba | A | May 6, 2020, 2:40 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5939200 | 1600 | |
79149881 | majk | A | May 6, 2020, 2:39 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5939200 | 1600 | |
79149841 | FlowerOfSorrow | A | May 6, 2020, 2:39 p.m. | OK | GNU C++17 (64) | TESTS | 26 | 61 | 5939200 | 1600 | |
79240865 | wang.senyuan | A | May 7, 2020, 6:59 a.m. | OK | Go | TESTS | 26 | 93 | 17100800 | 1600 | |
79214317 | glebsamsonov | A | May 6, 2020, 11:15 p.m. | OK | Go | TESTS | 26 | 93 | 44134400 | 1600 | |
79330284 | Laurens | A | May 7, 2020, 10:13 p.m. | OK | Haskell | TESTS | 26 | 187 | 43315200 | 1600 | |
79155480 | Russell_Emerine | A | May 6, 2020, 2:46 p.m. | OK | Haskell | TESTS | 26 | 717 | 64307200 | 1600 | |
79175561 | cirno3153 | A | May 6, 2020, 3:15 p.m. | OK | Java 11 | TESTS | 26 | 202 | 23961600 | 1600 | |
79149913 | awesomelemonade | A | May 6, 2020, 2:39 p.m. | OK | Java 11 | TESTS | 26 | 217 | 24883200 | 1600 | |
79149765 | uwi | A | May 6, 2020, 2:39 p.m. | OK | Java 11 | TESTS | 26 | 218 | 24064000 | 1600 | |
79149211 | Lewin | A | May 6, 2020, 2:38 p.m. | OK | Java 11 | TESTS | 26 | 233 | 24064000 | 1600 | |
79244924 | unicorn228 | A | May 7, 2020, 7:43 a.m. | OK | Java 11 | TESTS | 26 | 233 | 24883200 | 1600 | |
79149292 | VArtem | A | May 6, 2020, 2:38 p.m. | OK | Java 11 | TESTS | 26 | 234 | 24780800 | 1600 | |
79210777 | TheSawan | A | May 6, 2020, 9:56 p.m. | OK | Java 11 | TESTS | 26 | 280 | 28364800 | 1600 | |
79207771 | egaeus.code | A | May 6, 2020, 8:50 p.m. | OK | Java 11 | TESTS | 26 | 296 | 23961600 | 1600 | |
79310004 | adarsh000321 | A | May 7, 2020, 4:50 p.m. | OK | Java 11 | TESTS | 26 | 296 | 24780800 | 1600 | |
79154548 | dusty.and.rusty | A | May 6, 2020, 2:45 p.m. | OK | Java 11 | TESTS | 26 | 326 | 42905600 | 1600 | |
79151729 | cwise | A | May 6, 2020, 2:41 p.m. | OK | Java 8 | TESTS | 26 | 124 | 20889600 | 1600 | |
79168784 | aman28rwt | A | May 6, 2020, 3:04 p.m. | OK | Java 8 | TESTS | 26 | 155 | 21196800 | 1600 | |
79395820 | kareem3id | A | May 8, 2020, 4:07 p.m. | OK | Java 8 | TESTS | 26 | 155 | 25600000 | 1600 | |
79429047 | lizhijian | A | May 9, 2020, 4:01 a.m. | OK | Java 8 | TESTS | 26 | 156 | 25600000 | 1600 | |
79166996 | DanielW48 | A | May 6, 2020, 3:01 p.m. | OK | Java 8 | TESTS | 26 | 171 | 25600000 | 1600 | |
79153885 | Xylenox | A | May 6, 2020, 2:44 p.m. | OK | Java 8 | TESTS | 26 | 171 | 25600000 | 1600 | |
79153559 | qlf9 | A | May 6, 2020, 2:44 p.m. | OK | Java 8 | TESTS | 26 | 171 | 25702400 | 1600 | |
79197619 | DarLam | A | May 6, 2020, 4:17 p.m. | OK | Java 8 | TESTS | 26 | 171 | 25804800 | 1600 | |
79207651 | Sharon | A | May 6, 2020, 8:48 p.m. | OK | Java 8 | TESTS | 26 | 186 | 25497600 | 1600 | |
79150563 | YahiaSherif | A | May 6, 2020, 2:40 p.m. | OK | Java 8 | TESTS | 26 | 186 | 28774400 | 1600 | |
79150204 | Eva | A | May 6, 2020, 2:40 p.m. | OK | Kotlin | TESTS | 26 | 170 | 27136000 | 1600 | |
79149838 | Tlatoani | A | May 6, 2020, 2:39 p.m. | OK | Kotlin | TESTS | 26 | 264 | 42393600 | 1600 | |
79211186 | knightL | A | May 6, 2020, 10:03 p.m. | OK | Kotlin | TESTS | 26 | 373 | 39936000 | 1600 | |
79152282 | elizarov | A | May 6, 2020, 2:42 p.m. | OK | Kotlin | TESTS | 26 | 374 | 38809600 | 1600 | |
79152897 | Yupiteru | A | May 6, 2020, 2:43 p.m. | OK | Mono C# | TESTS | 26 | 109 | 157184000 | 1600 | |
79152621 | mban259 | A | May 6, 2020, 2:43 p.m. | OK | Mono C# | TESTS | 26 | 140 | 39219200 | 1600 | |
79189357 | hibatibati | A | May 6, 2020, 3:47 p.m. | OK | Mono C# | TESTS | 26 | 171 | 38604800 | 1600 | |
79151086 | keymoon | A | May 6, 2020, 2:41 p.m. | OK | Mono C# | TESTS | 26 | 171 | 42086400 | 1600 | |
79170717 | lxhgww | A | May 6, 2020, 3:07 p.m. | OK | MS C++ | TESTS | 26 | 77 | 4710400 | 1600 | |
79188903 | P___ | A | May 6, 2020, 3:46 p.m. | OK | MS C++ 2017 | TESTS | 26 | 93 | 4505600 | 1600 | |
79150722 | pichulia | A | May 6, 2020, 2:40 p.m. | OK | MS C++ 2017 | TESTS | 26 | 93 | 5324800 | 1600 | |
79155148 | tarattata1 | A | May 6, 2020, 2:46 p.m. | OK | MS C++ 2017 | TESTS | 26 | 140 | 7782400 | 1600 | |
79162217 | alex_36 | A | May 6, 2020, 2:54 p.m. | OK | MS C++ 2017 | TESTS | 26 | 202 | 5324800 | 1600 | |
79157290 | vpike | A | May 6, 2020, 2:48 p.m. | OK | MS C++ 2017 | TESTS | 26 | 202 | 5324800 | 1600 | |
79236663 | buping | A | May 7, 2020, 6:15 a.m. | OK | MS C++ 2017 | TESTS | 26 | 248 | 5324800 | 1600 | |
79156000 | Pasqual45 | A | May 6, 2020, 2:46 p.m. | OK | MS C++ 2017 | TESTS | 26 | 249 | 4505600 | 1600 | |
79217357 | areo | A | May 7, 2020, 12:42 a.m. | OK | MS C++ 2017 | TESTS | 26 | 249 | 7782400 | 1600 | |
79431188 | GreedyCoder999 | A | May 9, 2020, 4:55 a.m. | OK | MS C++ 2017 | TESTS | 26 | 264 | 7884800 | 1600 | |
79241790 | kupriyanov | A | May 7, 2020, 7:09 a.m. | OK | MS C++ 2017 | TESTS | 26 | 265 | 6860800 | 1600 | |
79231946 | Mukundan314 | A | May 7, 2020, 5:17 a.m. | OK | PyPy 2 | TESTS | 26 | 202 | 37683200 | 1600 | |
79175958 | pajenegod | A | May 6, 2020, 3:16 p.m. | OK | PyPy 2 | TESTS | 26 | 451 | 36044800 | 1600 | |
79463224 | pajenegod | A | May 9, 2020, 12:29 p.m. | OK | PyPy 3 | TESTS | 26 | 218 | 34201600 | 1600 | |
79150723 | tamato | A | May 6, 2020, 2:40 p.m. | OK | PyPy 3 | TESTS | 26 | 218 | 40038400 | 1600 | |
79463161 | pajenegod | A | May 9, 2020, 12:28 p.m. | OK | PyPy 3 | TESTS | 26 | 248 | 34201600 | 1600 | |
79161190 | su565fx | A | May 6, 2020, 2:53 p.m. | OK | PyPy 3 | TESTS | 26 | 265 | 40345600 | 1600 | |
79150290 | MAO1112 | A | May 6, 2020, 2:40 p.m. | OK | PyPy 3 | TESTS | 26 | 312 | 42393600 | 1600 | |
79150458 | conqueror_of_tourist | A | May 6, 2020, 2:40 p.m. | OK | PyPy 3 | TESTS | 26 | 343 | 38092800 | 1600 | |
79151267 | pineriver | A | May 6, 2020, 2:41 p.m. | OK | PyPy 3 | TESTS | 26 | 358 | 38707200 | 1600 | |
79157700 | titia | A | May 6, 2020, 2:48 p.m. | OK | PyPy 3 | TESTS | 26 | 373 | 41676800 | 1600 | |
79155610 | nagitaosu | A | May 6, 2020, 2:46 p.m. | OK | PyPy 3 | TESTS | 26 | 374 | 37273600 | 1600 | |
79150895 | anagohirame | A | May 6, 2020, 2:41 p.m. | OK | PyPy 3 | TESTS | 26 | 374 | 39219200 | 1600 | |
79165104 | mkawa2 | A | May 6, 2020, 2:58 p.m. | OK | Python 3 | TESTS | 26 | 202 | 23552000 | 1600 | |
79216972 | buiductoan207 | A | May 7, 2020, 12:31 a.m. | OK | Python 3 | TESTS | 26 | 233 | 24064000 | 1600 | |
79216866 | buiductoan207 | A | May 7, 2020, 12:27 a.m. | OK | Python 3 | TESTS | 26 | 249 | 23040000 | 1600 | |
79391152 | LethalPuppy | A | May 8, 2020, 3:13 p.m. | OK | Python 3 | TESTS | 26 | 280 | 22016000 | 1600 | |
79216453 | buiductoan207 | A | May 7, 2020, 12:15 a.m. | OK | Python 3 | TESTS | 26 | 296 | 22732800 | 1600 | |
79158249 | naagi | A | May 6, 2020, 2:49 p.m. | OK | Python 3 | TESTS | 26 | 296 | 22732800 | 1600 | |
79154466 | old_boo | A | May 6, 2020, 2:45 p.m. | OK | Python 3 | TESTS | 26 | 311 | 21913600 | 1600 | |
79190431 | potpath | A | May 6, 2020, 3:49 p.m. | OK | Python 3 | TESTS | 26 | 311 | 22732800 | 1600 | |
79153580 | Nanored | A | May 6, 2020, 2:44 p.m. | OK | Python 3 | TESTS | 26 | 311 | 22732800 | 1600 | |
79454113 | code_beast7 | A | May 9, 2020, 10:35 a.m. | OK | Python 3 | TESTS | 26 | 327 | 23347200 | 1600 | |
79167696 | cotton100pc | A | May 6, 2020, 3:02 p.m. | OK | Rust | TESTS | 26 | 46 | 9523200 | 1600 | |
79215638 | LeoRiether | A | May 6, 2020, 11:52 p.m. | OK | Rust | TESTS | 26 | 46 | 10035200 | 1600 | |
79155191 | darkkcyan | A | May 6, 2020, 2:46 p.m. | OK | Rust | TESTS | 26 | 62 | 14643200 | 1600 | |
79433544 | sansen | A | May 9, 2020, 5:42 a.m. | OK | Rust | TESTS | 26 | 93 | 15667200 | 1600 | |
79170442 | yuya178 | A | May 6, 2020, 3:06 p.m. | OK | Rust | TESTS | 26 | 155 | 10956800 | 1600 | |
79237250 | zz_kk | A | May 7, 2020, 6:21 a.m. | OK | Rust | TESTS | 26 | 249 | 4812800 | 1600 | |
79458097 | drywet | A | May 9, 2020, 11:26 a.m. | OK | Scala | TESTS | 26 | 701 | 55910400 | 1600 |
Back to search problems