Educational Codeforces Round 122 (Rated for Div. 2)

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Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
1633 Educational Codeforces Round 122 (Rated for Div. 2) FINISHED False 7200 88183499 Jan. 31, 2022, 2:35 p.m.

Problems

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( 1554 ) E Spanning Tree Queries PROGRAMMING binary search data structures ds graphs implementation math sortings

B'You are given a connected weighted undirected graph, consisting of n vertices and m edges. You are asked k queries about it. Each query consists of a single integer x . For each query, you select a spanning tree in the graph. Let the weights of its edges be w_1, w_2, ... , w_{n-1} . The cost of a spanning tree is sum limits_{i=1}^{n-1} |w_i - x| (the sum of absolute differences between the weights and x ). The answer to a query is the lowest cost of a spanning tree. The queries are given in a compressed format. The first p (1 <= p <= k) queries q_1, q_2, ... , q_p are provided explicitly. For queries from p+1 to k , q_j = (q_{j-1} cdot a + b) mod c . Print the xor of answers to all queries. The first line contains two integers n and m ( 2 <= n <= 50 ; n - 1 <= m <= 300 ) -- the number of vertices and the number of edges in the graph. Each of the next m lines contains a description of an undirected edge: three integers v , u and w ( 1 <= v, u <= n ; v neq u ; 0 <= w <= 10^8 ) -- the vertices the edge connects and its weight. Note that there might be multiple edges between a pair of vertices. The edges form a connected graph. The next line contains five integers p, k, a, b and c ( 1 <= p <= 10^5 ; p <= k <= 10^7 ; 0 <= a, b <= 10^8 ; 1 <= c <= 10^8 ) -- the number of queries provided explicitly, the total number of queries and parameters to generate the queries. The next line contains p integers q_1, q_2, ... , q_p ( 0 <= q_j < c ) -- the first p queries. Print a single integer -- the xor of answers to all queries. The queries in the first example are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 . The answers are 11, 9, 7, 3, 1, 5, 8, 7, 5, 7, 11 . The queries in the second example are 3, 0, 2, 1, 6, 0, 3, 5, 4, 1 . The answers are 14, '...

Tutorials

99539

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
144783671 Bedo_Sayed E Jan. 31, 2022, 9:50 p.m. OK GNU C++14 TESTS 25 842 100761600
144788096 bary E Feb. 1, 2022, 1:55 a.m. OK GNU C++14 TESTS 25 873 25088000
144783258 Bedo_Sayed E Jan. 31, 2022, 9:37 p.m. OK GNU C++14 TESTS 25 920 100966400
144767323 AwakeAnay E Jan. 31, 2022, 5:47 p.m. OK GNU C++14 TESTS 25 1123 200396800
144763946 myee E Jan. 31, 2022, 5:21 p.m. OK GNU C++14 TESTS 25 1372 80179200
144786518 Bliss_of_comprehension E Feb. 1, 2022, 12:27 a.m. OK GNU C++14 TESTS 25 1700 2457600
144781819 Bliss_of_comprehension E Jan. 31, 2022, 9:02 p.m. OK GNU C++14 TESTS 25 1809 2150400
144763424 WoNt_StOp E Jan. 31, 2022, 5:18 p.m. OK GNU C++14 TESTS 25 1887 2457600
144790654 kaiming_xxy E Feb. 1, 2022, 3:18 a.m. OK GNU C++14 TESTS 25 2168 4403200
144757548 ThunderSpirit E Jan. 31, 2022, 4:46 p.m. OK GNU C++14 TESTS 25 2620 234291200
144787091 Solstice E Feb. 1, 2022, 1:04 a.m. OK GNU C++17 TESTS 25 1092 409600
144784847 zerver52 E Jan. 31, 2022, 10:32 p.m. OK GNU C++17 TESTS 25 1122 1331200
144778935 windu E Jan. 31, 2022, 8:05 p.m. OK GNU C++17 TESTS 25 1184 202547200
144784269 GordeyZav E Jan. 31, 2022, 10:10 p.m. OK GNU C++17 TESTS 25 1247 40140800
144792494 spsicio E Feb. 1, 2022, 3:58 a.m. OK GNU C++17 TESTS 25 1263 40652800
144778416 windu E Jan. 31, 2022, 7:56 p.m. OK GNU C++17 TESTS 25 1263 202240000
144787881 wanghaoze E Feb. 1, 2022, 1:46 a.m. OK GNU C++17 TESTS 25 1294 3686400
144789593 xxafhixx E Feb. 1, 2022, 2:50 a.m. OK GNU C++17 TESTS 25 1356 1433600
144790776 xxafhixx E Feb. 1, 2022, 3:21 a.m. OK GNU C++17 TESTS 25 1357 1433600
144790278 Mckenna_Grace E Feb. 1, 2022, 3:10 a.m. OK GNU C++17 TESTS 25 1357 40652800
144763372 Changyu E Jan. 31, 2022, 5:17 p.m. OK GNU C++17 (64) TESTS 25 920 0
144762902 Changyu E Jan. 31, 2022, 5:14 p.m. OK GNU C++17 (64) TESTS 25 935 204800
144761376 lsantire E Jan. 31, 2022, 5:05 p.m. OK GNU C++17 (64) TESTS 25 1060 40140800
144758605 neal E Jan. 31, 2022, 4:51 p.m. OK GNU C++17 (64) TESTS 25 1138 1331200
144759258 neal E Jan. 31, 2022, 4:53 p.m. OK GNU C++17 (64) TESTS 25 1154 1331200
144759655 nomanhasan123 E Jan. 31, 2022, 4:55 p.m. OK GNU C++17 (64) TESTS 25 1201 1536000
144785920 bedirhan E Jan. 31, 2022, 11:54 p.m. OK GNU C++17 (64) TESTS 25 1216 1843200
144787164 mango_lassi E Feb. 1, 2022, 1:09 a.m. OK GNU C++17 (64) TESTS 25 1232 1433600
144766301 ILovemihoyo E Jan. 31, 2022, 5:38 p.m. OK GNU C++17 (64) TESTS 25 1247 40652800
144790485 MaGnsi0 E Feb. 1, 2022, 3:14 a.m. OK GNU C++17 (64) TESTS 25 1247 41369600
144769194 keta_tsimakuridze E Jan. 31, 2022, 6:03 p.m. OK GNU C++20 (64) TESTS 25 546 14950400
144768171 AwakeAnay E Jan. 31, 2022, 5:54 p.m. OK GNU C++20 (64) TESTS 25 670 25088000
144768302 AwakeAnay E Jan. 31, 2022, 5:55 p.m. OK GNU C++20 (64) TESTS 25 717 25088000
144767575 AwakeAnay E Jan. 31, 2022, 5:49 p.m. OK GNU C++20 (64) TESTS 25 936 200396800
144778123 A_G E Jan. 31, 2022, 7:52 p.m. OK GNU C++20 (64) TESTS 25 951 11059200
144794528 ovd0312 E Feb. 1, 2022, 4:34 a.m. OK GNU C++20 (64) TESTS 25 1092 80281600
144799277 YYYLLL2021 E Feb. 1, 2022, 5:58 a.m. OK GNU C++20 (64) TESTS 25 1153 40652800
144794672 boy_of_kutbilim E Feb. 1, 2022, 4:36 a.m. OK GNU C++20 (64) TESTS 25 1185 40652800
144792378 AndreyPavlov E Feb. 1, 2022, 3:55 a.m. OK GNU C++20 (64) TESTS 25 1185 81612800
144778676 Nea1 E Jan. 31, 2022, 8:01 p.m. OK GNU C++20 (64) TESTS 25 1231 1126400
144783344 anvorguesa E Jan. 31, 2022, 9:39 p.m. OK Go TESTS 25 3962 47104000
144771909 Dukkha E Jan. 31, 2022, 6:29 p.m. OK Java 11 TESTS 25 3431 0
144769248 Dukkha E Jan. 31, 2022, 6:04 p.m. OK Java 11 TESTS 25 3493 0
144768835 arvindf232 E Jan. 31, 2022, 6 p.m. OK Kotlin 1.4 TESTS 25 3587 1740800
144768478 r57shell E Jan. 31, 2022, 5:57 p.m. OK MS C++ 2017 TESTS 25 1466 2048000

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