Codeforces Round 1030 (Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
2118 Codeforces Round 1030 (Div. 2) FINISHED False 7200 26666723 June 12, 2025, 2:35 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 8397 ) D1 Red Light, Green Light (Easy version) PROGRAMMING brute force dfs and similar dp graphs implementation

This is the easy version of the problem. The only difference is the constraint on (k) and the total sum of (n) and (q) across all test cases. You can make hacks only if both versions of the problem are solved. You are given a strip of length (10^{15}) and a constant (k). There are exactly (n) cells that contain a traffic light; each has a position (p_i) and an initial delay (d_i) for which (d_i < k). The (i)-th traffic light works the following way: it shows red at the (l \cdot k + d_i)-th second, where (l) is an integer, it shows green otherwise. At second (0), you are initially positioned at some cell on the strip, facing the positive direction. At each second, you perform the following actions in order: If the current cell contains a red traffic light, you turn around. Move one cell in the direction you are currently facing. You are given (q) different starting positions. For each one, determine whether you will eventually leave the strip within (10^{100}) seconds. Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 500)). The description of the test cases follows. The first line of each test case contains two integers (n), (k) ((\mathbf{1 \le n \le 500}) and (\mathbf{1 \le k \le 500})) — the number of traffic lights and the length of the period. The second line of each test case contains (n) integers (p_1, p_2, \ldots p_n) ((1 \le p_1 < p_2 < \cdots < p_n \le 10^{15})) — the positions of the traffic lights. The third line of each test case contains (n) integers (d_1, d_2, \ldots d_n) ((0 \le d_i < k)) — the delays of the traffic lights. The fourth line of each test case contains one integer (q) ((\mathbf{1 \le q \le 500})) — the number of queries. The fifth line of each test case contains (q) integers (a_1, a_2, \ldots, a_q) ((1 \leq a_i \leq 10^{15})) — the starting posit

Tutorials

Codeforces Round 1030 (Div. 2) Editorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
324140970 -firefly- D1 June 12, 2025, 5:14 p.m. OK C# 13 TESTS 30 109 307200
324144445 og.kostya D1 June 12, 2025, 5:34 p.m. OK C# 13 TESTS 30 156 0
324183089 shaun2005 D1 June 13, 2025, 2:59 a.m. OK C++17 (GCC 7-32) TESTS 30 46 102400
324177589 Hassan_Fouad D1 June 13, 2025, 1:33 a.m. OK C++17 (GCC 7-32) TESTS 30 46 2662400
324196711 zjq123 D1 June 13, 2025, 5:39 a.m. OK C++17 (GCC 7-32) TESTS 30 46 8089600
324165316 Kallaseldor D1 June 12, 2025, 8:47 p.m. OK C++17 (GCC 7-32) TESTS 30 46 10240000
324195482 Lakshya3859 D1 June 13, 2025, 5:27 a.m. OK C++17 (GCC 7-32) TESTS 30 61 0
324172769 noobcoder696969 D1 June 12, 2025, 11:37 p.m. OK C++17 (GCC 7-32) TESTS 30 61 0
324180240 _20230100 D1 June 13, 2025, 2:17 a.m. OK C++17 (GCC 7-32) TESTS 30 61 102400
324168180 saturnbored D1 June 12, 2025, 9:37 p.m. OK C++17 (GCC 7-32) TESTS 30 61 102400
324131795 Aman_star D1 June 12, 2025, 4:28 p.m. OK C++17 (GCC 7-32) TESTS 30 61 102400
324140473 Nisikto D1 June 12, 2025, 5:11 p.m. OK C++17 (GCC 7-32) TESTS 30 61 6451200
324197748 wasim_394 D1 June 13, 2025, 5:49 a.m. OK C++20 (GCC 13-64) TESTS 30 46 0
324184321 I_am_dog_of_Luotianyi D1 June 13, 2025, 3:16 a.m. OK C++20 (GCC 13-64) TESTS 30 46 0
324191767 chef_gladiator D1 June 13, 2025, 4:50 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324189482 alwaysCE D1 June 13, 2025, 4:23 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324181447 GGodSSpeed D1 June 13, 2025, 2:35 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324181093 sunshne D1 June 13, 2025, 2:30 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324180323 ctw123 D1 June 13, 2025, 2:18 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324179623 ikun-ikun D1 June 13, 2025, 2:07 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324176801 GOTKAKO D1 June 13, 2025, 1:18 a.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324163311 sharaf_makahleh D1 June 12, 2025, 8:20 p.m. OK C++20 (GCC 13-64) TESTS 30 46 102400
324188321 False0099 D1 June 13, 2025, 4:08 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 0
324176008 EL_BALD D1 June 13, 2025, 1:01 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 0
324175312 EL_BALD D1 June 13, 2025, 12:43 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 0
324140145 plAtEaUpUs D1 June 12, 2025, 5:10 p.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 0
324198800 harsh1t_t1war1 D1 June 13, 2025, 5:59 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 102400
324195333 N0.ONE D1 June 13, 2025, 5:25 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 102400
324195063 Boogeyman912 D1 June 13, 2025, 5:22 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 102400
324193884 snowythecat D1 June 13, 2025, 5:10 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 102400
324193124 Oatschamp D1 June 13, 2025, 5:03 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 102400
324191294 Messier-42 D1 June 13, 2025, 4:44 a.m. OK C++23 (GCC 14-64, msys2) TESTS 30 46 102400
324133699 NenadDapic D1 June 12, 2025, 4:31 p.m. OK FPC TESTS 30 77 102400
324148010 adi_7861 D1 June 12, 2025, 5:57 p.m. OK Java 21 TESTS 30 249 921600
324150534 hemant D1 June 12, 2025, 6:16 p.m. OK Java 21 TESTS 30 264 614400
324196737 NpHardcore_05 D1 June 13, 2025, 5:39 a.m. OK Java 21 TESTS 30 280 1126400
324149416 WrongAnswerOnTestCase2 D1 June 12, 2025, 6:08 p.m. OK Java 21 TESTS 30 280 1126400
324176926 Balu2907 D1 June 13, 2025, 1:20 a.m. OK Java 21 TESTS 30 280 7270400
324139139 DatHam D1 June 12, 2025, 5:06 p.m. OK Java 21 TESTS 30 281 1331200
324139884 sreecharanreddypacharla D1 June 12, 2025, 5:09 p.m. OK Java 21 TESTS 30 312 1228800
324148558 WrongAnswerOnTestCase2 D1 June 12, 2025, 6:01 p.m. OK Java 21 TESTS 30 359 18636800
324139126 BurnerAce07 D1 June 12, 2025, 5:06 p.m. OK Java 21 TESTS 30 374 1228800
324162332 pimonster D1 June 12, 2025, 8:08 p.m. OK Java 21 TESTS 30 390 1228800
324164256 Shashwata_32 D1 June 12, 2025, 8:32 p.m. OK Java 8 TESTS 30 124 0
324136182 lynx17 D1 June 12, 2025, 4:34 p.m. OK Java 8 TESTS 30 312 0
324147248 SamyajitDas D1 June 12, 2025, 5:52 p.m. OK Java 8 TESTS 30 609 0
324134086 Poorav_JIIT D1 June 12, 2025, 4:31 p.m. OK PyPy 3 TESTS 30 327 4608000
324135064 HardikAggarwal45 D1 June 12, 2025, 4:33 p.m. OK PyPy 3 TESTS 30 375 4403200
324197443 aritro_pal D1 June 13, 2025, 5:46 a.m. OK PyPy 3-64 TESTS 30 109 2662400
324187007 Rahul328549 D1 June 13, 2025, 3:50 a.m. OK PyPy 3-64 TESTS 30 109 3072000
324156009 Fine_stu D1 June 12, 2025, 6:54 p.m. OK PyPy 3-64 TESTS 30 109 6451200
324151116 kvedula2004 D1 June 12, 2025, 6:20 p.m. OK PyPy 3-64 TESTS 30 124 2457600
324157525 sohampalkar D1 June 12, 2025, 7:10 p.m. OK PyPy 3-64 TESTS 30 124 4710400
324139859 aniketgupta30 D1 June 12, 2025, 5:09 p.m. OK PyPy 3-64 TESTS 30 125 3174400
324162873 porcif D1 June 12, 2025, 8:15 p.m. OK PyPy 3-64 TESTS 30 125 3584000
324186080 hxu10 D1 June 13, 2025, 3:39 a.m. OK PyPy 3-64 TESTS 30 139 2867200
324146504 eric899 D1 June 12, 2025, 5:47 p.m. OK PyPy 3-64 TESTS 30 139 9523200
324156121 Fine_stu D1 June 12, 2025, 6:55 p.m. OK PyPy 3-64 TESTS 30 140 2560000
324146687 Jimanbanashi D1 June 12, 2025, 5:48 p.m. OK Python 2 TESTS 30 78 0
324146195 Jimanbanashi D1 June 12, 2025, 5:45 p.m. OK Python 2 TESTS 30 108 0
324133685 Arpitkush087 D1 June 12, 2025, 4:31 p.m. OK Python 2 TESTS 30 984 51609600
324134661 potato1234 D1 June 12, 2025, 4:32 p.m. OK Python 3 TESTS 30 124 614400
324143383 lp__ D1 June 12, 2025, 5:27 p.m. OK Python 3 TESTS 30 250 819200
324134544 PalizU D1 June 12, 2025, 4:32 p.m. OK Python 3 TESTS 30 390 2048000
324168801 pplodev D1 June 12, 2025, 9:50 p.m. OK Python 3 TESTS 30 577 57446400
324179111 lintttt D1 June 13, 2025, 1:59 a.m. OK Python 3 TESTS 30 609 93798400
324133938 uday30 D1 June 12, 2025, 4:31 p.m. OK Python 3 TESTS 30 717 93491200
324133340 codeforces.code D1 June 12, 2025, 4:30 p.m. OK Python 3 TESTS 30 718 94003200
324136604 suhruth08 D1 June 12, 2025, 4:34 p.m. OK Python 3 TESTS 30 2155 170086400

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