Codeforces Round 887 (Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
1853 Codeforces Round 887 (Div. 2) FINISHED False 9000 41700299 July 23, 2023, 2:35 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 17575 ) B Fibonaccharsis PROGRAMMING binary search brute force math

B'Ntarsis has received two integers n and k for his birthday. He wonders how many fibonacci-like sequences of length k can be formed with n as the k -th element of the sequence. A sequence of non-decreasing non-negative integers is considered fibonacci-like if f_i = f_{i-1} + f_{i-2} for all i > 2 , where f_i denotes the i -th element in the sequence. Note that f_1 and f_2 can be arbitrary. For example, sequences such as [4,5,9,14] and [0,1,1] are considered fibonacci-like sequences, while [0,0,0,1,1] , [1, 2, 1, 3] , and [-1,-1,-2] are not: the first two do not always satisfy f_i = f_{i-1} + f_{i-2} , the latter does not satisfy that the elements are non-negative. Impress Ntarsis by helping him with this task. The first line contains an integer t ( 1 <= q t <= q 2 cdot 10^5 ), the number of test cases. The description of each test case is as follows. Each test case contains two integers, n and k ( 1 <= q n <= q 2 cdot 10^5 , 3 <= q k <= q 10^9 ). It is guaranteed the sum of n over all test cases does not exceed 2 cdot 10^5 . For each test case output an integer, the number of fibonacci-like sequences of length k such that the k -th element in the sequence is n . That is, output the number of sequences f of length k so f is a fibonacci-like sequence and f_k = n . It can be shown this number is finite. There are 4 valid fibonacci-like sequences for n = 22 , k = 4 : For n = 3 , k = 9 , it can be shown that there are no fibonacci-like sequences satisfying the given conditions. For n = 55 , k = 11 , [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55] is the only fibonacci-like sequence. '...

Tutorials

Codeforces Round 887 (Div 1, Div 2) Tutorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
215283711 BritoAlv B July 24, 2023, 12:53 a.m. OK C# 10 TESTS 34 1091 5632000
215266215 Alfafox B July 23, 2023, 7:35 p.m. OK C# 10 TESTS 34 1185 3276800
215307048 tzc_22_slk B July 24, 2023, 6:01 a.m. OK Clang++17 Diagnostics TESTS 34 1419 1945600
215262909 NenadDapic B July 23, 2023, 6:54 p.m. OK FPC TESTS 34 592 921600
215263496 NenadDapic B July 23, 2023, 7:01 p.m. OK FPC TESTS 34 623 921600
215237073 VanLam_05 B July 23, 2023, 4:11 p.m. OK FPC TESTS 34 624 819200
215264573 eastnman B July 23, 2023, 7:15 p.m. OK FPC TESTS 34 639 204800
215263807 eastnman B July 23, 2023, 7:05 p.m. OK FPC TESTS 34 639 204800
215263308 NenadDapic B July 23, 2023, 6:59 p.m. OK FPC TESTS 34 639 921600
215284895 altper B July 24, 2023, 1:12 a.m. OK GNU C11 TESTS 34 811 0
215236882 1435730 B July 23, 2023, 4:10 p.m. OK GNU C11 TESTS 34 842 0
215240003 divyanshudubey2002 B July 23, 2023, 4:22 p.m. OK GNU C11 TESTS 34 857 0
215236176 Zzzcr B July 23, 2023, 4:08 p.m. OK GNU C++14 TESTS 34 15 4198400
215239451 lostintianyi B July 23, 2023, 4:19 p.m. OK GNU C++14 TESTS 34 31 1024000
215243854 wangjingxu B July 23, 2023, 4:36 p.m. OK GNU C++14 TESTS 34 77 819200
215254893 Belief_yfly B July 23, 2023, 5:48 p.m. OK GNU C++14 TESTS 34 78 0
215249850 _xm_ B July 23, 2023, 4:59 p.m. OK GNU C++14 TESTS 34 78 0
215244017 codewyx B July 23, 2023, 4:37 p.m. OK GNU C++14 TESTS 34 78 0
215256805 jujujujujudi B July 23, 2023, 5:59 p.m. OK GNU C++14 TESTS 34 78 0
215284908 smilingandweeping B July 24, 2023, 1:13 a.m. OK GNU C++14 TESTS 34 78 0
215297698 scu_zzk B July 24, 2023, 4:05 a.m. OK GNU C++14 TESTS 34 78 0
215288110 fengshengwei B July 24, 2023, 2:01 a.m. OK GNU C++14 TESTS 34 78 819200
215235757 Ceanai B July 23, 2023, 4:07 p.m. OK GNU C++17 TESTS 34 78 0
215235283 skq B July 23, 2023, 4:05 p.m. OK GNU C++17 TESTS 34 78 0
215245558 _Eren_ B July 23, 2023, 4:43 p.m. OK GNU C++17 TESTS 34 78 0
215282747 Dakkar_7 B July 24, 2023, 12:34 a.m. OK GNU C++17 TESTS 34 78 0
215259302 vito1036 B July 23, 2023, 6:19 p.m. OK GNU C++17 TESTS 34 78 0
215238243 Chloris_Black B July 23, 2023, 4:15 p.m. OK GNU C++17 TESTS 34 78 74547200
215282868 ccsu_zx B July 24, 2023, 12:37 a.m. OK GNU C++17 TESTS 34 93 0
215282772 ccsu_zx B July 24, 2023, 12:35 a.m. OK GNU C++17 TESTS 34 93 0
215284871 SF-Manman B July 24, 2023, 1:12 a.m. OK GNU C++17 TESTS 34 93 0
215283071 Destiny. B July 24, 2023, 12:41 a.m. OK GNU C++17 TESTS 34 93 0
215255622 Anish_Singh_Dhami_07 B July 23, 2023, 5:52 p.m. OK GNU C++17 (64) TESTS 34 61 204800
215300983 andhitoofan B July 24, 2023, 4:51 a.m. OK GNU C++17 (64) TESTS 34 62 0
215294990 abdulla.bin.ah B July 24, 2023, 3:27 a.m. OK GNU C++17 (64) TESTS 34 62 0
215274058 awesomeguy856 B July 23, 2023, 9:18 p.m. OK GNU C++17 (64) TESTS 34 62 0
215258877 shuvocoder2025 B July 23, 2023, 6:16 p.m. OK GNU C++17 (64) TESTS 34 62 0
215237707 harsh_8484 B July 23, 2023, 4:13 p.m. OK GNU C++17 (64) TESTS 34 62 0
215265053 anupamojha__21 B July 23, 2023, 7:21 p.m. OK GNU C++17 (64) TESTS 34 62 3174400
215240582 Alkaser_ID B July 23, 2023, 4:24 p.m. OK GNU C++17 (64) TESTS 34 62 4812800
215306079 HarshiL_MalanI07 B July 24, 2023, 5:50 a.m. OK GNU C++17 (64) TESTS 34 77 0
215306685 Zhak_RMukh B July 24, 2023, 5:57 a.m. OK GNU C++17 (64) TESTS 34 77 0
215267226 Ferrriccc B July 23, 2023, 7:46 p.m. OK GNU C++20 (64) TESTS 34 15 0
215259131 CLT B July 23, 2023, 6:18 p.m. OK GNU C++20 (64) TESTS 34 15 1945600
215302196 Aryan_ks20 B July 24, 2023, 5:05 a.m. OK GNU C++20 (64) TESTS 34 46 0
215300616 sherry456 B July 24, 2023, 4:46 a.m. OK GNU C++20 (64) TESTS 34 46 0
215298654 simplesheep03 B July 24, 2023, 4:19 a.m. OK GNU C++20 (64) TESTS 34 46 0
215298157 ami_2025 B July 24, 2023, 4:12 a.m. OK GNU C++20 (64) TESTS 34 46 0
215296352 ami_2025 B July 24, 2023, 3:45 a.m. OK GNU C++20 (64) TESTS 34 46 0
215307101 sanjay77 B July 24, 2023, 6:01 a.m. OK GNU C++20 (64) TESTS 34 46 0
215303834 LextyleO_o B July 24, 2023, 5:25 a.m. OK GNU C++20 (64) TESTS 34 46 0
215304441 vabbisht17 B July 24, 2023, 5:32 a.m. OK GNU C++20 (64) TESTS 34 46 0
215242569 O_Vladimir B July 23, 2023, 4:31 p.m. OK Go TESTS 34 140 4403200
215284532 cck111 B July 24, 2023, 1:07 a.m. OK Go TESTS 34 156 4403200
215249049 sushibob B July 23, 2023, 4:56 p.m. OK Java 11 TESTS 34 233 0
215265127 sad_truant B July 23, 2023, 7:22 p.m. OK Java 11 TESTS 34 249 0
215264195 sad_truant B July 23, 2023, 7:10 p.m. OK Java 11 TESTS 34 249 0
215233956 kushwaha_vi B July 23, 2023, 4 p.m. OK Java 11 TESTS 34 264 0
215306276 Nanthakumar06 B July 24, 2023, 5:52 a.m. OK Java 11 TESTS 34 265 0
215306359 Nanthakumar06 B July 24, 2023, 5:53 a.m. OK Java 11 TESTS 34 280 0
215235381 MuhammD_husss B July 23, 2023, 4:05 p.m. OK Java 11 TESTS 34 295 0
215241738 MayhemLemon B July 23, 2023, 4:28 p.m. OK Java 11 TESTS 34 295 0
215239333 Vegeks B July 23, 2023, 4:19 p.m. OK Java 11 TESTS 34 295 43622400
215245612 amank12 B July 23, 2023, 4:44 p.m. OK Java 11 TESTS 34 608 0
215290118 Asnkkzk B July 24, 2023, 2:28 a.m. OK Java 17 TESTS 34 202 512000
215257909 Vrutik_2809 B July 23, 2023, 6:08 p.m. OK Java 17 TESTS 34 233 614400
215300455 sumit2018das2004 B July 24, 2023, 4:44 a.m. OK Java 17 TESTS 34 264 409600
215281139 miminguci B July 23, 2023, 11:57 p.m. OK Java 17 TESTS 34 265 512000
215238987 ADust B July 23, 2023, 4:18 p.m. OK Java 17 TESTS 34 280 307200
215234575 Pratham2908 B July 23, 2023, 4:03 p.m. OK Java 17 TESTS 34 280 409600
215282291 one_line B July 24, 2023, 12:25 a.m. OK Java 17 TESTS 34 280 716800
215240206 SamyajitDas B July 23, 2023, 4:22 p.m. OK Java 17 TESTS 34 295 614400
215258869 vaibhav_1710 B July 23, 2023, 6:16 p.m. OK Java 17 TESTS 34 296 512000
215274779 faresbadr316 B July 23, 2023, 9:31 p.m. OK Java 17 TESTS 34 296 819200
215301999 chuquwan9964 B July 24, 2023, 5:02 a.m. OK Java 8 TESTS 34 139 0
215279476 Toosid B July 23, 2023, 11:16 p.m. OK Java 8 TESTS 34 171 0
215258249 mr_nobodyyy B July 23, 2023, 6:11 p.m. OK Java 8 TESTS 34 171 0
215274129 Yousef_Badr B July 23, 2023, 9:19 p.m. OK Java 8 TESTS 34 186 0
215237030 gtiwari912 B July 23, 2023, 4:11 p.m. OK Java 8 TESTS 34 186 0
215258384 mohamedhassan_c B July 23, 2023, 6:12 p.m. OK Java 8 TESTS 34 186 7168000
215267176 aspect_129 B July 23, 2023, 7:46 p.m. OK Java 8 TESTS 34 187 0
215275417 qlf9 B July 23, 2023, 9:43 p.m. OK Java 8 TESTS 34 202 0
215240368 1091857051 B July 23, 2023, 4:23 p.m. OK Java 8 TESTS 34 202 0
215237182 mohamedhassan_c B July 23, 2023, 4:11 p.m. OK Java 8 TESTS 34 841 7168000
215255577 Tenenk B July 23, 2023, 5:52 p.m. OK MS C++ 2017 TESTS 34 358 0
215248337 Galina_Basalova B July 23, 2023, 4:54 p.m. OK MS C++ 2017 TESTS 34 358 0
215235244 zetxie B July 23, 2023, 4:05 p.m. OK MS C++ 2017 TESTS 34 826 0
215292108 22561940340 B July 24, 2023, 2:53 a.m. OK MS C++ 2017 TESTS 34 919 0
215272207 vinzer_by_is B July 23, 2023, 8:50 p.m. OK MS C++ 2017 TESTS 34 951 0
215237460 Ravitosh B July 23, 2023, 4:12 p.m. OK MS C++ 2017 TESTS 34 951 0
215275140 narwalabhinav B July 23, 2023, 9:37 p.m. OK MS C++ 2017 TESTS 34 951 2252800
215235729 YangTuo B July 23, 2023, 4:06 p.m. OK MS C++ 2017 TESTS 34 982 48128000
215246085 zaidasad09 B July 23, 2023, 4:46 p.m. OK MS C++ 2017 TESTS 34 1014 0
215239349 Dick007 B July 23, 2023, 4:19 p.m. OK MS C++ 2017 TESTS 34 1028 0
215247804 surajcodeforce B July 23, 2023, 4:52 p.m. OK PHP TESTS 34 686 0
215305618 andy0liang B July 24, 2023, 5:44 a.m. OK PyPy 3 TESTS 34 342 14131200
215255409 jvatsal0709 B July 23, 2023, 5:51 p.m. OK PyPy 3 TESTS 34 482 10956800
215280752 liupengsay B July 23, 2023, 11:47 p.m. OK PyPy 3-64 TESTS 34 140 9625600
215278538 beethoven97 B July 23, 2023, 10:54 p.m. OK PyPy 3-64 TESTS 34 140 9625600
215266250 person_exe B July 23, 2023, 7:35 p.m. OK PyPy 3-64 TESTS 34 140 10137600
215234122 udayan8 B July 23, 2023, 4:01 p.m. OK PyPy 3-64 TESTS 34 155 7782400
215278274 denilb B July 23, 2023, 10:48 p.m. OK PyPy 3-64 TESTS 34 155 10035200
215265123 person_exe B July 23, 2023, 7:22 p.m. OK PyPy 3-64 TESTS 34 155 10137600
215259283 rmr B July 23, 2023, 6:19 p.m. OK PyPy 3-64 TESTS 34 155 10240000
215254516 kavorka B July 23, 2023, 5:46 p.m. OK PyPy 3-64 TESTS 34 171 8908800
215265687 mohdaman892 B July 23, 2023, 7:28 p.m. OK PyPy 3-64 TESTS 34 171 9625600
215280719 liupengsay B July 23, 2023, 11:45 p.m. OK PyPy 3-64 TESTS 34 187 9625600
215266189 person_exe B July 23, 2023, 7:35 p.m. OK Python 3 TESTS 34 560 204800
215244965 patulka B July 23, 2023, 4:41 p.m. OK Python 3 TESTS 34 560 30105600
215264644 person_exe B July 23, 2023, 7:16 p.m. OK Python 3 TESTS 34 577 204800
215267797 eugalt B July 23, 2023, 7:53 p.m. OK Python 3 TESTS 34 607 17203200
215257955 eugalt B July 23, 2023, 6:08 p.m. OK Python 3 TESTS 34 607 17203200
215260726 eugalt B July 23, 2023, 6:33 p.m. OK Python 3 TESTS 34 608 17100800
215247348 gigala B July 23, 2023, 4:50 p.m. OK Python 3 TESTS 34 639 819200
215254569 eugalt B July 23, 2023, 5:47 p.m. OK Python 3 TESTS 34 639 17100800
215268221 eugalt B July 23, 2023, 7:58 p.m. OK Python 3 TESTS 34 639 17203200
215246670 VelDoraA B July 23, 2023, 4:48 p.m. OK Python 3 TESTS 34 701 22323200
215246187 gr8den B July 23, 2023, 4:46 p.m. OK Rust 2021 TESTS 34 31 0
215270634 cptahahab B July 23, 2023, 8:28 p.m. OK Rust 2021 TESTS 34 62 0
215285116 AkagiYuu B July 24, 2023, 1:16 a.m. OK Rust 2021 TESTS 34 1512 0
215243601 Saumil_2021097 B July 23, 2023, 4:35 p.m. OK Rust 2021 TESTS 34 1590 0
215284998 AkagiYuu B July 24, 2023, 1:14 a.m. OK Rust 2021 TESTS 34 1777 0
215244976 khollbach B July 23, 2023, 4:41 p.m. OK Rust 2021 TESTS 34 1871 0

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