Codeforces Alpha Round 20 (Codeforces format)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
20 Codeforces Alpha Round 20 (Codeforces format) FINISHED False 5400 499444180 June 18, 2010, 3:30 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 7097 ) A BerOS file system PROGRAMMING implementation 2600

The new operating system BerOS has a nice feature. It is possible to use any number of characters '/' as a delimiter in path instead of one traditional '/' . For example, strings //usr///local//nginx/sbin// and /usr/local/nginx///sbin are equivalent. The character '/' (or some sequence of such characters) at the end of the path is required only in case of the path to the root directory, which can be represented as single character '/' . A path called normalized if it contains the smallest possible number of characters '/' . Your task is to transform a given path to the normalized form. The first line of the input contains only lowercase Latin letters and character '/' — the path to some directory. All paths start with at least one character '/' . The length of the given line is no more than 100 characters, it is not empty. The path in normalized form.

Tutorials

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
49755236 false1 A Feb. 11, 2019, 5:56 a.m. OK Clang++17 Diagnostics TESTS 19 92 1024000 2600
34256920 FalseMirror A Jan. 17, 2018, 4:23 p.m. OK D TESTS 19 30 2969600 2600
34256901 FalseMirror A Jan. 17, 2018, 4:22 p.m. OK D TESTS 19 30 3072000 2600
29826127 ldn060904 A Aug. 27, 2017, 12:09 p.m. OK FPC TESTS 19 30 102400 2600
34735167 luogu_bot3 A Jan. 31, 2018, 11:24 a.m. OK FPC TESTS 19 30 1638400 2600
35613622 luogu_bot1 A Feb. 24, 2018, 2:40 a.m. OK FPC TESTS 19 30 1740800 2600
35515386 luogu_bot1 A Feb. 20, 2018, 8:22 a.m. OK FPC TESTS 19 30 1740800 2600
41244904 FCBM71 A Aug. 5, 2018, 12:33 p.m. OK FPC TESTS 19 60 102400 2600
66999142 luogu_bot4 A Dec. 16, 2019, 4:32 a.m. OK FPC TESTS 19 60 102400 2600
36877092 dblark A April 2, 2018, 11:58 a.m. OK FPC TESTS 19 60 3174400 2600
69652968 luogu_bot3 A Jan. 28, 2020, 6:12 a.m. OK FPC TESTS 19 62 102400 2600
69392837 luogu_bot3 A Jan. 23, 2020, 4:43 a.m. OK FPC TESTS 19 62 102400 2600
69217712 luogu_bot5 A Jan. 21, 2020, 2:22 a.m. OK FPC TESTS 19 62 102400 2600
38628737 indianfootball A May 26, 2018, 8:37 a.m. OK GNU C TESTS 19 30 0 2600
38453085 sourav_malo A May 20, 2018, 8:50 a.m. OK GNU C TESTS 19 30 0 2600
38347146 JWWWW A May 17, 2018, 11:43 a.m. OK GNU C TESTS 19 30 0 2600
29760856 Azox A Aug. 24, 2017, 9:13 p.m. OK GNU C TESTS 19 30 0 2600
35115477 vjudge5 A Feb. 10, 2018, 7:39 a.m. OK GNU C TESTS 19 30 1843200 2600
33921343 vinitpatra2010 A Jan. 5, 2018, 12:10 p.m. OK GNU C TESTS 19 30 1843200 2600
33917235 labi2 A Jan. 5, 2018, 7:27 a.m. OK GNU C TESTS 19 30 1843200 2600
28078685 pmad1234 A June 27, 2017, 2:40 p.m. OK GNU C TESTS 19 30 1945600 2600
35084143 vjudge4 A Feb. 9, 2018, 9:12 a.m. OK GNU C TESTS 19 30 2048000 2600
37391185 kuru.patel A April 17, 2018, 9:20 a.m. OK GNU C TESTS 19 30 3584000 2600
41384290 luogu_bot5 A Aug. 9, 2018, 4:37 a.m. OK GNU C++ TESTS 19 30 0 2600
40919566 PHREAK_ A July 29, 2018, 1:46 p.m. OK GNU C++ TESTS 19 30 0 2600
39742316 luogu_bot2 A June 28, 2018, 12:12 p.m. OK GNU C++ TESTS 19 30 0 2600
39742290 luogu_bot3 A June 28, 2018, 12:11 p.m. OK GNU C++ TESTS 19 30 0 2600
39666766 luogu_bot4 A June 26, 2018, 6:02 a.m. OK GNU C++ TESTS 19 30 0 2600
39194937 luogu_bot2 A June 12, 2018, 2:54 p.m. OK GNU C++ TESTS 19 30 0 2600
39035210 luogu_bot1 A June 8, 2018, 3:34 a.m. OK GNU C++ TESTS 19 30 0 2600
38716490 vjudge1 A May 29, 2018, 11:01 a.m. OK GNU C++ TESTS 19 30 0 2600
38626738 vjudge3 A May 26, 2018, 7:20 a.m. OK GNU C++ TESTS 19 30 0 2600
38351869 luogu_bot2 A May 17, 2018, 2:18 p.m. OK GNU C++ TESTS 19 30 0 2600
45954265 samadulamin41 A Nov. 19, 2018, 8:17 a.m. OK GNU C11 TESTS 19 30 0 2600
46063024 Kamrozzaman A Nov. 22, 2018, 2:23 p.m. OK GNU C11 TESTS 19 30 0 2600
37639005 vjudge4 A April 26, 2018, 2:04 p.m. OK GNU C11 TESTS 19 30 3276800 2600
56413156 compscistudent A July 2, 2019, 2:18 a.m. OK GNU C11 TESTS 19 60 0 2600
58481885 luogu_bot5 A Aug. 9, 2019, 5:59 a.m. OK GNU C11 TESTS 19 62 0 2600
54525052 Watch_Dog_Vintorez A May 23, 2019, 2:05 p.m. OK GNU C11 TESTS 19 62 0 2600
55614366 SanjidaAhmed A June 16, 2019, 7:59 a.m. OK GNU C11 TESTS 19 62 0 2600
64068944 vjudge1 A Nov. 2, 2019, 6:46 a.m. OK GNU C11 TESTS 19 62 0 2600
63519113 vjudge3 A Oct. 27, 2019, 2:45 a.m. OK GNU C11 TESTS 19 62 0 2600
63399881 minhtuan9095909 A Oct. 25, 2019, 5:57 p.m. OK GNU C11 TESTS 19 62 0 2600
58992756 luogu_bot4 A Aug. 18, 2019, 9:56 a.m. OK GNU C++11 TESTS 19 30 0 2600
69597614 WangYiYu A Jan. 27, 2020, 5:48 a.m. OK GNU C++11 TESTS 19 30 0 2600
67763784 luogu_bot2 A Dec. 28, 2019, 1:39 a.m. OK GNU C++11 TESTS 19 30 0 2600
66407205 luogu_bot4 A Dec. 6, 2019, 2:04 p.m. OK GNU C++11 TESTS 19 30 0 2600
65955897 luogu_bot5 A Nov. 29, 2019, 12:48 p.m. OK GNU C++11 TESTS 19 30 0 2600
60760675 Mohammad.H915 A Sept. 18, 2019, 10:04 a.m. OK GNU C++11 TESTS 19 30 0 2600
60527242 luogu_bot2 A Sept. 14, 2019, 10:53 a.m. OK GNU C++11 TESTS 19 30 0 2600
59566790 luogu_bot3 A Aug. 27, 2019, 11:02 a.m. OK GNU C++11 TESTS 19 30 0 2600
59344195 luogu_bot1 A Aug. 23, 2019, 8:57 a.m. OK GNU C++11 TESTS 19 30 0 2600
58888161 luogu_bot4 A Aug. 16, 2019, 3:34 a.m. OK GNU C++11 TESTS 19 30 0 2600
55051020 _Seyed37_ A June 3, 2019, 5:04 p.m. OK GNU C++14 TESTS 19 30 0 2600
56535166 repeat_ A July 4, 2019, 11:39 p.m. OK GNU C++14 TESTS 19 30 0 2600
57350257 njwrz A July 20, 2019, 2:59 a.m. OK GNU C++14 TESTS 19 30 0 2600
60445370 GHady A Sept. 12, 2019, 1:57 p.m. OK GNU C++14 TESTS 19 30 0 2600
61266367 vjudge1 A Sept. 25, 2019, 12:52 p.m. OK GNU C++14 TESTS 19 30 0 2600
62660184 gerard.onats A Oct. 16, 2019, 5:07 a.m. OK GNU C++14 TESTS 19 30 0 2600
64617719 dipesh_kohder A Nov. 10, 2019, 5:38 a.m. OK GNU C++14 TESTS 19 30 0 2600
66145100 Gaunt A Dec. 1, 2019, 4:13 p.m. OK GNU C++14 TESTS 19 30 0 2600
67077044 gokul.raj A Dec. 17, 2019, 2:52 p.m. OK GNU C++14 TESTS 19 30 0 2600
67433409 baohiep A Dec. 22, 2019, 4:06 p.m. OK GNU C++14 TESTS 19 30 0 2600
69695010 IRRAKLY A Jan. 28, 2020, 8:03 p.m. OK GNU C++17 TESTS 19 30 0 2600
69620686 Dweik A Jan. 27, 2020, 2:26 p.m. OK GNU C++17 TESTS 19 30 0 2600
69423282 vjudge3 A Jan. 23, 2020, 3:02 p.m. OK GNU C++17 TESTS 19 30 0 2600
69257617 daniilzimin4 A Jan. 21, 2020, 4:06 p.m. OK GNU C++17 TESTS 19 30 0 2600
68358514 sh3ifu A Jan. 7, 2020, 1:08 p.m. OK GNU C++17 TESTS 19 30 0 2600
67972189 samplex A Dec. 30, 2019, 3:27 p.m. OK GNU C++17 TESTS 19 30 0 2600
66509835 talant110726 A Dec. 8, 2019, 3:59 p.m. OK GNU C++17 TESTS 19 30 0 2600
66166538 emrey A Dec. 2, 2019, 7:55 a.m. OK GNU C++17 TESTS 19 30 0 2600
65684010 Phortox A Nov. 24, 2019, 9:14 p.m. OK GNU C++17 TESTS 19 30 0 2600
65121843 luogu_bot5 A Nov. 16, 2019, 2:05 a.m. OK GNU C++17 TESTS 19 30 0 2600
38621044 WangJialei A May 26, 2018, 2:19 a.m. OK Go TESTS 19 62 102400 2600
68606744 ismagilov.code A Jan. 11, 2020, 2:24 p.m. OK Haskell TESTS 19 60 0 2600
42891791 jedikni A Sept. 15, 2018, 1:19 p.m. OK Haskell TESTS 19 60 0 2600
67425200 190103458 A Dec. 22, 2019, 1:10 p.m. OK Java 11 TESTS 19 374 0 2600
67436709 Nurmangaliyev A Dec. 22, 2019, 5:29 p.m. OK Java 11 TESTS 19 404 0 2600
67425391 jcmjyu16 A Dec. 22, 2019, 1:14 p.m. OK Java 11 TESTS 19 404 0 2600
67391076 tommy131 A Dec. 21, 2019, 7:46 p.m. OK Java 11 TESTS 19 404 0 2600
61795556 Zeina_Kandil A Oct. 3, 2019, 5:07 p.m. OK Java 8 TESTS 19 154 3174400 2600
46038598 theBiker A Nov. 21, 2018, 5:57 p.m. OK Java 8 TESTS 19 154 3174400 2600
49601328 jarcomp A Feb. 7, 2019, 5:15 p.m. OK Java 8 TESTS 19 156 3276800 2600
54607716 danielaggarwal A May 25, 2019, 9:55 a.m. OK Java 8 TESTS 19 186 3072000 2600
55057383 julian.miranda A June 3, 2019, 7:42 p.m. OK Java 8 TESTS 19 186 3174400 2600
45556923 xwchen A Nov. 11, 2018, 9:07 a.m. OK Java 8 TESTS 19 186 3174400 2600
45068353 KulikAlex A Oct. 29, 2018, 6:18 p.m. OK Java 8 TESTS 19 186 3174400 2600
49531592 dmitriy0712 A Feb. 6, 2019, 2:03 p.m. OK Java 8 TESTS 19 186 3276800 2600
68124402 SondoS-JaRRaR A Jan. 3, 2020, 2:35 p.m. OK Java 8 TESTS 19 186 3481600 2600
67437555 Marat17 A Dec. 22, 2019, 5:50 p.m. OK Java 8 TESTS 19 186 3584000 2600
58055134 sjx233 A July 31, 2019, 4:43 a.m. OK JavaScript TESTS 19 62 0 2600
62824625 vjudge4 A Oct. 17, 2019, 5:40 p.m. OK JavaScript TESTS 19 92 0 2600
44622861 Ahmadjon A Oct. 21, 2018, 7:27 a.m. OK Kotlin TESTS 19 218 5324800 2600
37012794 Skndr A April 6, 2018, 5:05 a.m. OK Mono C# TESTS 19 62 7884800 2600
69250456 kartoxa A Jan. 21, 2020, 2:07 p.m. OK Mono C# TESTS 19 92 0 2600
54340088 don_saba A May 18, 2019, 9:54 a.m. OK Mono C# TESTS 19 92 0 2600
62940548 Bolota A Oct. 19, 2019, 3:26 p.m. OK Mono C# TESTS 19 92 0 2600
64008312 keche-28 A Nov. 1, 2019, 3:05 p.m. OK Mono C# TESTS 19 92 0 2600
48986178 merabi26 A Jan. 26, 2019, 12:24 p.m. OK Mono C# TESTS 19 92 0 2600
37012615 Skndr A April 6, 2018, 4:53 a.m. OK Mono C# TESTS 19 92 7884800 2600
34216791 abdalkader-s A Jan. 16, 2018, 8:41 a.m. OK Mono C# TESTS 19 92 9318400 2600
47458024 g_todadze2 A Dec. 24, 2018, 1:35 p.m. OK Mono C# TESTS 19 122 0 2600
48648134 Keti13 A Jan. 20, 2019, 6:46 p.m. OK Mono C# TESTS 19 124 0 2600
63932520 vjudge3 A Oct. 31, 2019, 2:42 p.m. OK MS C++ TESTS 19 30 102400 2600
30833790 AIChannel A Sept. 29, 2017, 3:26 p.m. OK MS C++ TESTS 19 30 204800 2600
33022051 vjudge2 A Dec. 8, 2017, 12:16 p.m. OK MS C++ TESTS 19 30 2048000 2600
34517195 MaeSTRo A Jan. 24, 2018, 12:56 p.m. OK MS C++ TESTS 19 30 2048000 2600
34001054 duongbp1990 A Jan. 8, 2018, 10:14 a.m. OK MS C++ TESTS 19 30 2048000 2600
33053431 XXXXNXX A Dec. 9, 2017, 2:46 p.m. OK MS C++ TESTS 19 30 2150400 2600
37478336 vjudge5 A April 20, 2018, 6:10 a.m. OK MS C++ TESTS 19 30 3788800 2600
38656056 vjudge2 A May 27, 2018, 1:16 p.m. OK MS C++ TESTS 19 60 0 2600
53031856 vjudge2 A April 20, 2019, 1:48 a.m. OK MS C++ TESTS 19 60 0 2600
57081608 vjudge3 A July 15, 2019, 7:24 a.m. OK MS C++ TESTS 19 60 0 2600
57081562 2018030401051 A July 15, 2019, 7:23 a.m. OK MS C++ 2017 TESTS 19 60 0 2600
59333171 Alexander_Kiryushkin A Aug. 23, 2019, 2:44 a.m. OK MS C++ 2017 TESTS 19 62 0 2600
57366467 FumeiYaziwa A July 20, 2019, 9:21 a.m. OK MS C++ 2017 TESTS 19 62 0 2600
60500892 AhmadAbotrab A Sept. 13, 2019, 6:38 p.m. OK MS C++ 2017 TESTS 19 62 0 2600
64343096 Saber4096 A Nov. 6, 2019, 4:22 a.m. OK MS C++ 2017 TESTS 19 62 102400 2600
65272781 MRamanauskas A Nov. 17, 2019, 9:01 p.m. OK MS C++ 2017 TESTS 19 62 307200 2600
62693495 Shoukko A Oct. 16, 2019, 2:50 p.m. OK PascalABC.NET TESTS 19 374 0 2600
55561809 vippee A June 14, 2019, 1:05 p.m. OK PascalABC.NET TESTS 19 374 0 2600
55946256 shanto_muk A June 22, 2019, 7:58 p.m. OK PHP TESTS 19 92 0 2600
63397397 io.shanto A Oct. 25, 2019, 5:07 p.m. OK PHP TESTS 19 92 409600 2600
66637423 vjudge3 A Dec. 11, 2019, 1:28 p.m. OK PyPy 2 TESTS 19 218 0 2600
66636569 vjudge1 A Dec. 11, 2019, 1:09 p.m. OK PyPy 2 TESTS 19 248 0 2600
58510514 GTrigger A Aug. 9, 2019, 6:44 p.m. OK PyPy 2 TESTS 19 374 0 2600
34187197 arknave A Jan. 15, 2018, 2:07 a.m. OK PyPy 3 TESTS 19 156 19968000 2600
51603967 madhur4127 A March 21, 2019, 6:16 a.m. OK PyPy 3 TESTS 19 248 0 2600
53017227 teitoku A April 19, 2019, 2:43 p.m. OK PyPy 3 TESTS 19 278 0 2600
49975455 III_Wolverine_III A Feb. 16, 2019, 5:41 a.m. OK PyPy 3 TESTS 19 278 0 2600
58850981 w33z8kqrqk8zzzx33 A Aug. 15, 2019, 7:29 a.m. OK PyPy 3 TESTS 19 280 0 2600
56179284 Mino260806 A June 27, 2019, 9:32 p.m. OK PyPy 3 TESTS 19 280 0 2600
55301813 AkiseAru A June 8, 2019, 12:22 p.m. OK PyPy 3 TESTS 19 280 0 2600
51285591 Ivan_Tea A March 14, 2019, 7:02 a.m. OK PyPy 3 TESTS 19 280 0 2600
51282692 aleonov A March 14, 2019, 5:18 a.m. OK PyPy 3 TESTS 19 280 0 2600
69960054 Dimitryliss A Feb. 1, 2020, 11:14 a.m. OK PyPy 3 TESTS 19 310 0 2600
30561630 mohabamr A Sept. 20, 2017, 8:56 p.m. OK Python 2 TESTS 19 92 0 2600
35289858 hieuduy15 A Feb. 15, 2018, 10:49 a.m. OK Python 2 TESTS 19 122 4608000 2600
31914427 Hahahahahahahhahaha A Oct. 31, 2017, 8:33 a.m. OK Python 2 TESTS 19 124 0 2600
35595957 laoliumang A Feb. 23, 2018, 12:16 p.m. OK Python 2 TESTS 19 124 4608000 2600
34212886 TranquilShore A Jan. 16, 2018, 5:11 a.m. OK Python 2 TESTS 19 124 4608000 2600
32983376 avuu A Dec. 6, 2017, 5:34 p.m. OK Python 2 TESTS 19 124 4608000 2600
38450455 thegamer1907 A May 20, 2018, 7:10 a.m. OK Python 2 TESTS 19 218 0 2600
40696535 rocketcress A July 24, 2018, 8:18 a.m. OK Python 2 TESTS 19 312 0 2600
31373105 cloutmaster A Oct. 15, 2017, 4:55 p.m. OK Python 3 TESTS 19 122 5529600 2600
32203026 RccHD A Nov. 10, 2017, 6:23 p.m. OK Python 3 TESTS 19 124 0 2600
30203060 AmirAShabani A Sept. 8, 2017, 1:15 p.m. OK Python 3 TESTS 19 124 0 2600
29940849 hijibijee A Aug. 31, 2017, 11:22 a.m. OK Python 3 TESTS 19 124 0 2600
29940821 inijini4 A Aug. 31, 2017, 11:19 a.m. OK Python 3 TESTS 19 124 0 2600
29605032 Qumeric A Aug. 19, 2017, 5:34 p.m. OK Python 3 TESTS 19 124 0 2600
33891598 SpeedOfMagic A Jan. 3, 2018, 6:58 p.m. OK Python 3 TESTS 19 124 5529600 2600
28504194 gosftw A July 13, 2017, 1:48 p.m. OK Python 3 TESTS 19 124 5529600 2600
35416772 Roma-PKTL A Feb. 17, 2018, 12:59 p.m. OK Python 3 TESTS 19 124 5632000 2600
34824032 NeverN A Feb. 2, 2018, 2:22 a.m. OK Python 3 TESTS 19 124 5632000 2600
41982403 Mostafa_Khaled_Robot A Aug. 23, 2018, 2:59 a.m. OK Ruby TESTS 19 122 0 2600
35847543 ______u______ A March 2, 2018, 4:45 p.m. OK Ruby TESTS 19 122 6451200 2600
35847478 ______n______ A March 2, 2018, 4:45 p.m. OK Ruby TESTS 19 122 6451200 2600
35847167 _____i_____ A March 2, 2018, 4:40 p.m. OK Ruby TESTS 19 122 6451200 2600
35847137 _____k_____ A March 2, 2018, 4:39 p.m. OK Ruby TESTS 19 122 6451200 2600
35840568 ______h______ A March 2, 2018, 2:20 p.m. OK Ruby TESTS 19 122 6451200 2600
35840528 ______k______ A March 2, 2018, 2:20 p.m. OK Ruby TESTS 19 122 6451200 2600
35840216 ______i______ A March 2, 2018, 2:15 p.m. OK Ruby TESTS 19 122 6451200 2600
35837342 ______M______ A March 2, 2018, 1:10 p.m. OK Ruby TESTS 19 122 6451200 2600
40187554 zhupengfei A July 11, 2018, 3:17 a.m. OK Ruby TESTS 19 124 102400 2600
57633991 cminusminus A July 24, 2019, 9:54 a.m. OK Rust TESTS 19 62 0 2600

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