Codeforces Beta Round 75 (Div. 1 Only)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
91 Codeforces Beta Round 75 (Div. 1 Only) FINISHED False 7200 467823623 June 20, 2011, 3 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 1008 ) C Ski Base PROGRAMMING combinatorics dsu graphs 2500

A ski base is planned to be built in Walrusland. Recently, however, the project is still in the constructing phase. A large land lot was chosen for the construction. It contains n ski junctions, numbered from 1 to n . Initially the junctions aren't connected in any way. In the constructing process m bidirectional ski roads will be built. The roads are built one after another: first the road number 1 will be built, then the road number 2 , and so on. The i -th road connects the junctions with numbers a i and b i . Track is the route with the following properties: The route is closed, that is, it begins and ends in one and the same junction. The route contains at least one road. The route doesn't go on one road more than once, however it can visit any junction any number of times. Let's consider the ski base as a non-empty set of roads that can be divided into one or more tracks so that exactly one track went along each road of the chosen set. Besides, each track can consist only of roads from the chosen set. Ski base doesn't have to be connected. Two ski bases are considered different if they consist of different road sets. After building each new road the Walrusland government wants to know the number of variants of choosing a ski base based on some subset of the already built roads. The government asks you to help them solve the given problem. The first line contains two integers n and m ( 2 ≤ n ≤ 10 5 , 1 ≤ m ≤ 10 5 ). They represent the number of junctions and the number of roads correspondingly. Then on m lines follows the description of the roads in the order in which they were built. Each road is described by a pair of integers a i and b i ( 1 ≤ a i , b i ≤ n , a i ≠ b i ) — the numbers of the connected junctions. There could be more than one road between a pair of junctions. Print m lines: the i -th line should represent the number of ways to build a ski base after the end of construction of the road number i . The numbers should be printed modulo 1

Tutorials

Analysis Codeforces Beta Round #75

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
511498 malcolm C June 26, 2011, 3:44 p.m. OK Delphi TESTS 65 90 1331200 2500
930489 winterwolf94 C Dec. 5, 2011, 3:01 a.m. OK Delphi TESTS 65 90 1331200 2500
819903 Depool C Oct. 30, 2011, 4:17 p.m. OK Delphi TESTS 65 90 2048000 2500
528020 Shapo C July 4, 2011, 2:29 p.m. OK Delphi TESTS 65 90 4198400 2500
504022 KOTEHOK C June 20, 2011, 4:54 p.m. OK Delphi TESTS 65 520 1740800 2500
508522 54525871 C June 23, 2011, 7:27 a.m. OK FPC TESTS 65 90 1331200 2500
1478809 sillycross C April 6, 2012, 12:11 a.m. OK FPC TESTS 65 90 1433600 2500
510255 valikluks1995 C June 25, 2011, 7:33 a.m. OK FPC TESTS 65 90 1433600 2500
508008 Sereja C June 22, 2011, 4:18 p.m. OK FPC TESTS 65 90 1433600 2500
545031 xynx C July 14, 2011, 8:32 a.m. OK FPC TESTS 65 90 1945600 2500
505366 Jicote C June 21, 2011, 12:30 a.m. OK FPC TESTS 65 90 2252800 2500
509239 vlad107 C June 23, 2011, 8:12 p.m. OK FPC TESTS 65 90 2969600 2500
930493 LifeKeeper C Dec. 5, 2011, 3:07 a.m. OK FPC TESTS 65 110 1433600 2500
930488 LifeKeeper C Dec. 5, 2011, 2:59 a.m. OK FPC TESTS 65 130 1433600 2500
503544 timgaripov C June 20, 2011, 4:40 p.m. OK FPC TESTS 65 130 5017600 2500
501704 LayCurse C June 20, 2011, 3:45 p.m. OK GNU C TESTS 65 130 1843200 2500
506451 scottai1 C June 21, 2011, 1:14 p.m. OK GNU C TESTS 65 140 1740800 2500
503283 zpl2 C June 20, 2011, 4:31 p.m. OK GNU C TESTS 65 140 2150400 2500
20746769 MLine C Sept. 19, 2016, 2:48 a.m. OK GNU C++ TESTS 65 31 614400 2500
20746750 MLine C Sept. 19, 2016, 2:45 a.m. OK GNU C++ TESTS 65 31 614400 2500
40992612 ReaLNero1 C July 31, 2018, 1:27 a.m. OK GNU C++ TESTS 65 46 614400 2500
15142612 HappyNewYearMike C Dec. 31, 2015, 10:37 p.m. OK GNU C++ TESTS 65 62 409600 2500
4929975 yangff C Oct. 29, 2013, 4:29 p.m. OK GNU C++ TESTS 65 62 409600 2500
35898843 ______u______ C March 3, 2018, 6:27 p.m. OK GNU C++ TESTS 65 62 2355200 2500
35898784 _____k_____ C March 3, 2018, 6:25 p.m. OK GNU C++ TESTS 65 62 2355200 2500
35898456 ______n______ C March 3, 2018, 6:15 p.m. OK GNU C++ TESTS 65 62 2355200 2500
35897958 _____i_____ C March 3, 2018, 6:11 p.m. OK GNU C++ TESTS 65 62 2355200 2500
35892705 ______h______ C March 3, 2018, 3:33 p.m. OK GNU C++ TESTS 65 62 2355200 2500
10339043 a654889339 C March 18, 2015, 2:41 p.m. OK GNU C++0x TESTS 65 78 409600 2500
10339037 vjudge1 C March 18, 2015, 2:41 p.m. OK GNU C++0x TESTS 65 78 409600 2500
9924637 I_love_Hoang_Yen C Feb. 19, 2015, 10:55 a.m. OK GNU C++0x TESTS 65 78 409600 2500
501869 Archon.JK C June 20, 2011, 3:49 p.m. OK GNU C++0x TESTS 65 110 2150400 2500
614398 Archon.JK C Aug. 18, 2011, 1:52 p.m. OK GNU C++0x TESTS 65 130 2150400 2500
500724 2222 C June 20, 2011, 3:26 p.m. OK GNU C++0x TESTS 65 140 1843200 2500
3206113 mrTux C Feb. 28, 2013, 10:57 a.m. OK GNU C++0x TESTS 65 187 1228800 2500
4160393 LoveZx C July 25, 2013, 2:37 a.m. OK GNU C++0x TESTS 65 203 409600 2500
504914 package.zaic C June 20, 2011, 7 p.m. OK GNU C++0x TESTS 65 360 1843200 2500
602209 qinpengfei C Aug. 11, 2011, 2:23 a.m. OK GNU C++0x TESTS 65 410 1843200 2500
69546851 19992147 C Jan. 26, 2020, 3:37 a.m. OK GNU C++11 TESTS 65 62 409600 2500
61909059 vjudge2 C Oct. 5, 2019, 10:27 a.m. OK GNU C++11 TESTS 65 62 409600 2500
43607326 Big_black_jujube C Sept. 30, 2018, 12:52 p.m. OK GNU C++11 TESTS 65 62 409600 2500
43607240 Big_black_jujube C Sept. 30, 2018, 12:50 p.m. OK GNU C++11 TESTS 65 62 409600 2500
27013656 AakashHanda C May 11, 2017, 12:54 p.m. OK GNU C++11 TESTS 65 62 409600 2500
22875286 rajat1603 C Dec. 11, 2016, 10:39 a.m. OK GNU C++11 TESTS 65 62 409600 2500
15003330 letsLoseOnceAgain C Dec. 25, 2015, 1:03 p.m. OK GNU C++11 TESTS 65 62 409600 2500
11670519 wyxourlove C June 19, 2015, 3:09 p.m. OK GNU C++11 TESTS 65 62 409600 2500
11679200 besher C June 20, 2015, 8:22 a.m. OK GNU C++11 TESTS 65 62 614400 2500
57069541 xielinhan C July 15, 2019, 1:41 a.m. OK GNU C++11 TESTS 65 62 819200 2500
67198992 ElangBondol C Dec. 19, 2019, 10:13 a.m. OK GNU C++14 TESTS 65 77 409600 2500
32326015 Flash-boy C Nov. 15, 2017, 7:12 a.m. OK GNU C++14 TESTS 65 77 409600 2500
56173193 alimagde C June 27, 2019, 5:40 p.m. OK GNU C++14 TESTS 65 78 409600 2500
44352582 neeleshsinha C Oct. 15, 2018, 10:55 a.m. OK GNU C++14 TESTS 65 78 409600 2500
44051125 sggutier C Oct. 9, 2018, 7:10 p.m. OK GNU C++14 TESTS 65 78 409600 2500
32182767 andwho C Nov. 9, 2017, 10:51 p.m. OK GNU C++14 TESTS 65 78 409600 2500
51464349 kataki C March 18, 2019, 10:56 p.m. OK GNU C++14 TESTS 65 78 614400 2500
32088151 apoorv_kulsh C Nov. 6, 2017, 6:14 a.m. OK GNU C++14 TESTS 65 78 819200 2500
38542824 adedalic C May 22, 2018, 5:24 p.m. OK GNU C++14 TESTS 65 78 819200 2500
26961586 ko_osaga C May 8, 2017, 5:29 p.m. OK GNU C++14 TESTS 65 78 819200 2500
67380883 rama_pang C Dec. 21, 2019, 4:20 p.m. OK GNU C++17 TESTS 65 93 409600 2500
51951005 ivan100sic C March 28, 2019, 8:12 p.m. OK GNU C++17 TESTS 65 93 409600 2500
57806901 Ajax C July 26, 2019, 3:31 p.m. OK GNU C++17 TESTS 65 93 819200 2500
52563356 ZhemeDuoXiju C April 10, 2019, 11:30 a.m. OK GNU C++17 TESTS 65 93 819200 2500
46974427 aviroop123 C Dec. 13, 2018, 3:42 p.m. OK GNU C++17 TESTS 65 93 819200 2500
43428685 vntshh C Sept. 25, 2018, 10:31 p.m. OK GNU C++17 TESTS 65 93 819200 2500
51092959 roll_no_1 C March 9, 2019, 3:04 p.m. OK GNU C++17 TESTS 65 93 1228800 2500
49771975 stoyan_malinin C Feb. 11, 2019, 1:58 p.m. OK GNU C++17 TESTS 65 93 1433600 2500
39771321 cai_lw C June 29, 2018, 2:50 p.m. OK GNU C++17 TESTS 65 108 819200 2500
38695315 bash C May 28, 2018, 1:24 p.m. OK GNU C++17 TESTS 65 108 7987200 2500
502408 bjin C June 20, 2011, 4:04 p.m. OK Haskell TESTS 65 230 19968000 2500
501140 Egor C June 20, 2011, 3:34 p.m. OK Java 6 TESTS 65 170 43212800 2500
506865 uwi C June 21, 2011, 5:20 p.m. OK Java 6 TESTS 65 200 43212800 2500
506540 wistful23 C June 21, 2011, 2:17 p.m. OK Java 6 TESTS 65 220 43315200 2500
500504 niyaznigmatul C June 20, 2011, 3:22 p.m. OK Java 6 TESTS 65 220 43315200 2500
551086 charleschen C July 19, 2011, 7:43 a.m. OK Java 6 TESTS 65 230 35430400 2500
529534 Di735 C July 6, 2011, 7:04 a.m. OK Java 6 TESTS 65 230 35532800 2500
503494 VArtem C June 20, 2011, 4:38 p.m. OK Java 6 TESTS 65 230 43315200 2500
503566 ArtemKadeev C June 20, 2011, 4:40 p.m. OK Java 6 TESTS 65 230 43520000 2500
501897 yaro C June 20, 2011, 3:50 p.m. OK Java 6 TESTS 65 230 43520000 2500
506583 shilov C June 21, 2011, 2:45 p.m. OK Java 6 TESTS 65 250 43417600 2500
5201756 miguelmaurizio C Nov. 23, 2013, 9:11 p.m. OK Java 7 TESTS 65 248 102400 2500
16280756 iz0zb4 C Feb. 22, 2016, 4:53 p.m. OK Java 7 TESTS 65 545 0 2500
16264068 hsnprsd C Feb. 21, 2016, 4:21 p.m. OK Java 7 TESTS 65 545 0 2500
6988819 nikchee1 C June 30, 2014, 11:08 p.m. OK Java 7 TESTS 65 1310 0 2500
12320638 hama-du C Aug. 3, 2015, 3:59 a.m. OK Java 8 TESTS 65 155 0 2500
37542908 Ahmad C April 23, 2018, 1:48 a.m. OK Java 8 TESTS 65 155 21504000 2500
41068122 Origims C July 31, 2018, 8:12 p.m. OK Java 8 TESTS 65 202 0 2500
41652978 amnesiac_dusk C Aug. 16, 2018, 12:53 p.m. OK Java 8 TESTS 65 217 0 2500
20497080 jaconey C Sept. 10, 2016, 12:30 p.m. OK Java 8 TESTS 65 498 0 2500
20497001 jaconey C Sept. 10, 2016, 12:26 p.m. OK Java 8 TESTS 65 561 0 2500
20496297 jaconey C Sept. 10, 2016, 11:42 a.m. OK Java 8 TESTS 65 623 0 2500
8031753 AlexFetisov C Sept. 30, 2014, 3:36 a.m. OK Java 8 TESTS 65 748 2252800 2500
514303 Hadi_Asiaie C June 30, 2011, 7:09 a.m. OK Mono C# TESTS 65 470 7270400 2500
514306 Hadi_Asiaie C June 30, 2011, 7:12 a.m. OK Mono C# TESTS 65 470 7270400 2500
514299 Hadi_Asiaie C June 30, 2011, 7:05 a.m. OK Mono C# TESTS 65 500 6348800 2500
511087 bor.is C June 26, 2011, 7:23 a.m. OK Mono C# TESTS 65 500 7270400 2500
514301 Hadi_Asiaie C June 30, 2011, 7:08 a.m. OK Mono C# TESTS 65 530 7270400 2500
501823 Milanin C June 20, 2011, 3:48 p.m. OK MS C++ TESTS 65 110 1740800 2500
505963 mylyanyk.ivan C June 21, 2011, 7:41 a.m. OK MS C++ TESTS 65 110 1740800 2500
510574 Fdg C June 25, 2011, 1:20 p.m. OK MS C++ TESTS 65 110 1740800 2500
624652 hhddff C Aug. 21, 2011, 12:51 p.m. OK MS C++ TESTS 65 110 1740800 2500
505216 P___ C June 20, 2011, 9:42 p.m. OK MS C++ TESTS 65 110 2150400 2500
634457 Warrior C Aug. 23, 2011, 5:24 p.m. OK MS C++ TESTS 65 110 2150400 2500
9383482 Alex7 C Jan. 8, 2015, 3:30 a.m. OK MS C++ TESTS 65 124 819200 2500
2299191 XilinX C Oct. 4, 2012, 12:53 p.m. OK MS C++ TESTS 65 125 409600 2500
750220 zhaozhouyang C Oct. 8, 2011, 7:54 a.m. OK MS C++ TESTS 65 130 1740800 2500
510564 Fdg C June 25, 2011, 1:15 p.m. OK MS C++ TESTS 65 130 1740800 2500
51288221 meooow C March 14, 2019, 8:35 a.m. OK PyPy 3 TESTS 65 1278 11878400 2500
506232 DDDDDDDDDDDDDDDDDDDDDDDD C June 21, 2011, 10:28 a.m. OK Python 2 TESTS 65 660 4505600 2500
506225 DDDDDDDDDDDDDDDDDDDDDDDD C June 21, 2011, 10:24 a.m. OK Python 2 TESTS 65 730 4505600 2500
506221 DDDDDDDDDDDDDDDDDDDDDDDD C June 21, 2011, 10:22 a.m. OK Python 2 TESTS 65 730 4505600 2500
514670 bbugaev C June 30, 2011, 1:59 p.m. OK Python 2 TESTS 65 920 4915200 2500
507043 akashin C June 21, 2011, 8:40 p.m. OK Python 2 TESTS 65 1090 4915200 2500

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