Codeforces Round 459 (Div. 1)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
917 Codeforces Round 459 (Div. 1) FINISHED False 7200 214586699 Jan. 29, 2018, 2:35 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 1161 ) D Stranger Trees PROGRAMMING dp math matrices trees 2600

B"Will shares a psychic connection with the Upside Down Monster, so everything the monster knows, Will knows. Suddenly, he started drawing, page after page, non-stop. Joyce, his mom, and Chief Hopper put the drawings together, and they realized, it's a labeled tree! A tree is a connected acyclic graph. Will's tree has n vertices. Joyce and Hopper don't know what that means, so they're investigating this tree and similar trees. For each k such that 0 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89k xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89- xe2 x80 x891, they're going to investigate all labeled trees with n vertices that share exactly k edges with Will's tree. Two labeled trees are different if and only if there's a pair of vertices (v, xe2 x80 x89u) such that there's an edge between v and u in one tree and not in the other one. Hopper and Joyce want to know how much work they have to do, so they asked you to tell them the number of labeled trees with n vertices that share exactly k edges with Will's tree, for each k. The answer could be very large, so they only asked you to tell them the answers modulo 1000000007 xe2 x80 x89= xe2 x80 x89109 xe2 x80 x89+ xe2 x80 x897. The first line of input contains a single integer n (2 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89100) -- the size of the tree. The next n xe2 x80 x89- xe2 x80 x891 lines contain the edges of Will's tree. Each line contains two integers v and u (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89v, xe2 x80 x89u xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n, v xe2 x80 x89 xe2 x89 xa0 xe2 x80 x89u), endpoints of an edge. It is guaranteed that the given graph is a tree. Print n integers in one line. i-th integer should be the number of the number of labeled trees with n vertices that share exactly i xe2 x80 x89- xe2 x80 x891 edges with Will's tree, modulo 1000 xe2 x80 x89000 xe2 x80 x89007 xe2 x80 x89= xe2 x80 x89109 xe2 x80 x89+ xe2 x80 x897. "...

Tutorials

Codeforces Round #459 Editorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
42111907 luogu_bot5 D Aug. 26, 2018, 6:43 a.m. OK GNU C++ TESTS 34 31 204800 2600
40907045 JiangYutong D July 29, 2018, 6:28 a.m. OK GNU C++ TESTS 34 46 4710400 2600
35809919 Worldwide_D D March 1, 2018, 11:34 a.m. OK GNU C++ TESTS 34 46 6656000 2600
36064706 XingGeRuCi D March 8, 2018, 8:28 a.m. OK GNU C++ TESTS 34 46 12697600 2600
37210125 John_Cheng D April 11, 2018, 8:05 a.m. OK GNU C++ TESTS 34 46 37990400 2600
37210309 FairyHiweibolu D April 11, 2018, 8:12 a.m. OK GNU C++ TESTS 34 61 8499200 2600
35966726 beginend D March 5, 2018, 1:26 p.m. OK GNU C++ TESTS 34 62 6758400 2600
34682428 KrK D Jan. 29, 2018, 4:10 p.m. OK GNU C++ TESTS 34 78 6758400 2600
37226196 _patrick D April 11, 2018, 2:09 p.m. OK GNU C++ TESTS 34 78 8294400 2600
35462756 luogu_bot3 D Feb. 19, 2018, 5:52 a.m. OK GNU C++ TESTS 34 78 12697600 2600
49861041 Cyhlnj D Feb. 13, 2019, 9:30 a.m. OK GNU C++11 TESTS 34 31 0 2600
49861019 Cyhlnj D Feb. 13, 2019, 9:30 a.m. OK GNU C++11 TESTS 34 31 0 2600
49860964 Cyhlnj D Feb. 13, 2019, 9:28 a.m. OK GNU C++11 TESTS 34 31 0 2600
55106157 Pickupwin D June 5, 2019, 2:47 a.m. OK GNU C++11 TESTS 34 31 2969600 2600
37112070 laofudasuan D April 9, 2018, 2:22 a.m. OK GNU C++11 TESTS 34 31 7987200 2600
37112058 laofudasuan D April 9, 2018, 2:20 a.m. OK GNU C++11 TESTS 34 31 7987200 2600
51321077 RNS_JKS D March 15, 2019, 7:01 a.m. OK GNU C++11 TESTS 34 46 5427200 2600
34688455 JustN D Jan. 29, 2018, 7:11 p.m. OK GNU C++11 TESTS 34 46 6451200 2600
34673182 geniucos D Jan. 29, 2018, 3 p.m. OK GNU C++11 TESTS 34 46 7372800 2600
55608997 renjingyi D June 16, 2019, 4 a.m. OK GNU C++11 TESTS 34 46 9420800 2600
59206440 xgcxgc D Aug. 21, 2019, 7:05 a.m. OK GNU C++14 TESTS 34 30 204800 2600
62389551 melancholic_fat_otaku D Oct. 12, 2019, 12:23 a.m. OK GNU C++14 TESTS 34 31 204800 2600
63417698 Zory D Oct. 26, 2019, 5:07 a.m. OK GNU C++14 TESTS 34 31 614400 2600
34680194 ftiasch D Jan. 29, 2018, 3:50 p.m. OK GNU C++14 TESTS 34 31 3174400 2600
37086325 ftiasch D April 8, 2018, 3:21 a.m. OK GNU C++14 TESTS 34 31 3481600 2600
59198754 xgcxgc D Aug. 21, 2019, 3:17 a.m. OK GNU C++14 TESTS 34 31 4198400 2600
40978494 ReaLNero1 D July 30, 2018, 4:40 p.m. OK GNU C++14 TESTS 34 31 5632000 2600
34681680 KADR D Jan. 29, 2018, 4:03 p.m. OK GNU C++14 TESTS 34 31 5939200 2600
34692108 krijgertje D Jan. 29, 2018, 10:46 p.m. OK GNU C++14 TESTS 34 31 6144000 2600
35196131 sazzadrume D Feb. 13, 2018, 10:16 a.m. OK GNU C++14 TESTS 34 31 7372800 2600
62358695 xgcxgc D Oct. 11, 2019, 11:46 a.m. OK GNU C++17 TESTS 34 31 204800 2600
53817807 E869120 D May 6, 2019, 11:35 a.m. OK GNU C++17 TESTS 34 31 20992000 2600
69545109 vjudge1 D Jan. 26, 2020, 1:42 a.m. OK GNU C++17 TESTS 34 46 4198400 2600
60840718 kefaa2 D Sept. 19, 2019, 10:50 a.m. OK GNU C++17 TESTS 34 46 4915200 2600
69417190 user202729_ D Jan. 23, 2020, 1:25 p.m. OK GNU C++17 TESTS 34 62 1843200 2600
69591121 vjudge5 D Jan. 26, 2020, 11:38 p.m. OK GNU C++17 TESTS 34 62 6963200 2600
42326080 lixinyue D Sept. 1, 2018, 5:38 a.m. OK GNU C++17 TESTS 34 93 5836800 2600
46749779 Slaaava D Dec. 8, 2018, 8:38 a.m. OK GNU C++17 TESTS 34 109 9625600 2600
39044633 zbtrs D June 8, 2018, 11:40 a.m. OK GNU C++17 TESTS 34 109 20480000 2600
39044511 zbtrs D June 8, 2018, 11:35 a.m. OK GNU C++17 TESTS 34 124 74342400 2600
34778586 mathmaniac D Jan. 31, 2018, 6:54 p.m. OK Java 8 TESTS 34 811 27852800 2600
34778509 mathmaniac D Jan. 31, 2018, 6:52 p.m. OK Java 8 TESTS 34 811 27852800 2600
34679337 Lewin D Jan. 29, 2018, 3:42 p.m. OK Java 8 TESTS 34 997 20787200 2600

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