Educational Codeforces Round 9

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
632 Educational Codeforces Round 9 FINISHED False 7200 280767604 March 1, 2016, 3 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 1116 ) F Magic Matrix PROGRAMMING brute force divide and conquer graphs matrices trees 2400

B'You 're given a matrix A of size n xe2 x80 x89 xc3 x97 xe2 x80 x89n. Let 's call the matrix with nonnegative elements magic if it is symmetric (so aij xe2 x80 x89= xe2 x80 x89aji), aii xe2 x80 x89= xe2 x80 x890 and aij xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89max(aik, xe2 x80 x89ajk) for all triples i, xe2 x80 x89j, xe2 x80 x89k. Note that i, xe2 x80 x89j, xe2 x80 x89k do not need to be distinct. Determine if the matrix is magic. As the input/output can reach very huge size it is recommended to use fast input/output methods: for example, prefer to use scanf/printf instead of cin/cout in C++, prefer to use BufferedReader/PrintWriter instead of Scanner/System.out in Java. The first line contains integer n (1 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89n xe2 x80 x89 xe2 x89 xa4 xe2 x80 x892500) -- the size of the matrix A. Each of the next n lines contains n integers aij (0 xe2 x80 x89 xe2 x89 xa4 xe2 x80 x89aij xe2 x80 x89< xe2 x80 x89109) -- the elements of the matrix A. Note that the given matrix not necessarily is symmetric and can be arbitrary. Print ' 'MAGIC" (without quotes) if the given matrix A is magic. Otherwise print ' 'NOT MAGIC". '...

Tutorials

43493

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
16471760 sgtlaugh F March 2, 2016, 7:14 p.m. OK GNU C TESTS 34 4508 25600000 2400
19187156 vjtest F July 17, 2016, 8:55 a.m. OK GNU C++ TESTS 34 358 25292800 2400
19187195 vjtest F July 17, 2016, 8:57 a.m. OK GNU C++ TESTS 34 374 25292800 2400
19146361 vjtest F July 15, 2016, 7:33 a.m. OK GNU C++ TESTS 34 389 50380800 2400
19109240 PPFish F July 14, 2016, 1:56 p.m. OK GNU C++ TESTS 34 389 50380800 2400
19192177 vjtest F July 17, 2016, 3:07 p.m. OK GNU C++ TESTS 34 390 25292800 2400
40984995 ReaLNero1 F July 30, 2018, 7:41 p.m. OK GNU C++ TESTS 34 390 25395200 2400
41242588 vjudge4 F Aug. 5, 2018, 11:17 a.m. OK GNU C++ TESTS 34 405 25497600 2400
41140466 CalvinJin F Aug. 3, 2018, 2:25 a.m. OK GNU C++ TESTS 34 405 25497600 2400
25177423 zhan8855 F March 3, 2017, 2:42 p.m. OK GNU C++ TESTS 34 405 74240000 2400
28326341 xzyxzy F July 6, 2017, 12:12 p.m. OK GNU C++ TESTS 34 420 52531200 2400
61026959 rainboy F Sept. 21, 2019, 4:17 p.m. OK GNU C11 TESTS 34 1700 62668800 2400
50768581 luogu_bot5 F March 4, 2019, 1:41 a.m. OK GNU C++11 TESTS 34 233 26214400 2400
50769847 luogu_bot5 F March 4, 2019, 3:27 a.m. OK GNU C++11 TESTS 34 248 26214400 2400
50769904 QAQ_yyy_qwq F March 4, 2019, 3:31 a.m. OK GNU C++11 TESTS 34 248 26214400 2400
50767490 luogu_bot3 F March 4, 2019, 12:09 a.m. OK GNU C++11 TESTS 34 249 28160000 2400
51291103 X_o_r F March 14, 2019, 10:17 a.m. OK GNU C++11 TESTS 34 264 25088000 2400
50769941 QAQ_yyy_qwq F March 4, 2019, 3:34 a.m. OK GNU C++11 TESTS 34 264 26214400 2400
58468876 little_misfortune F Aug. 8, 2019, 9:40 p.m. OK GNU C++11 TESTS 34 264 51200000 2400
50773141 crpboy F March 4, 2019, 6:30 a.m. OK GNU C++11 TESTS 34 280 25190400 2400
51262681 luogu_bot1 F March 13, 2019, 2 p.m. OK GNU C++11 TESTS 34 280 25190400 2400
50771914 crpboy F March 4, 2019, 5:36 a.m. OK GNU C++11 TESTS 34 280 25190400 2400
51289643 XSamsara F March 14, 2019, 9:24 a.m. OK GNU C++14 TESTS 34 358 50483200 2400
51297494 ZigZagK F March 14, 2019, 12:59 p.m. OK GNU C++14 TESTS 34 358 50483200 2400
28984554 Sdywolf F July 30, 2017, 7:03 a.m. OK GNU C++14 TESTS 34 467 27545600 2400
51288034 yekehe F March 14, 2019, 8:28 a.m. OK GNU C++14 TESTS 34 795 62976000 2400
28685382 demerzel F July 19, 2017, 5:42 a.m. OK GNU C++14 TESTS 34 1590 195174400 2400
67615139 whyamievenhere F Dec. 25, 2019, 4:55 p.m. OK GNU C++14 TESTS 34 1778 26112000 2400
30553754 Perforator F Sept. 20, 2017, 5:25 p.m. OK GNU C++14 TESTS 34 1809 25497600 2400
35200685 kefaa2 F Feb. 13, 2018, 1:43 p.m. OK GNU C++14 TESTS 34 1809 115712000 2400
27329187 zlc1114 F May 25, 2017, 4:30 a.m. OK GNU C++14 TESTS 34 1856 25497600 2400
21739758 giwoo123 F Oct. 24, 2016, 11:36 a.m. OK GNU C++14 TESTS 34 1903 25395200 2400
61310012 FallingStar F Sept. 26, 2019, 8:53 a.m. OK GNU C++17 TESTS 34 1699 25292800 2400
66932219 rares2004 F Dec. 15, 2019, 7:41 a.m. OK GNU C++17 TESTS 34 1824 62668800 2400
47168161 Minnakhmetov F Dec. 17, 2018, 1:34 p.m. OK GNU C++17 TESTS 34 1902 100864000 2400
66516280 AlexLuchianov F Dec. 8, 2019, 7:04 p.m. OK GNU C++17 TESTS 34 1903 100761600 2400
62226980 Hoshi08 F Oct. 9, 2019, 7:18 p.m. OK GNU C++17 TESTS 34 1981 126054400 2400
47168175 Minnakhmetov F Dec. 17, 2018, 1:34 p.m. OK GNU C++17 TESTS 34 2043 100864000 2400
55206327 AliShahali1382 F June 6, 2019, 12:43 p.m. OK GNU C++17 TESTS 34 2089 75980800 2400
55204951 AliShahali1382 F June 6, 2019, 12:10 p.m. OK GNU C++17 TESTS 34 2105 75980800 2400
58088744 roll_no_1 F July 31, 2019, 4:42 p.m. OK GNU C++17 TESTS 34 2136 133017600 2400
67619742 Jester F Dec. 25, 2019, 6:14 p.m. OK GNU C++17 TESTS 34 2168 176537600 2400
61027037 Dukkha F Sept. 21, 2019, 4:19 p.m. OK Java 8 TESTS 34 2027 142336000 2400
16444961 mmaxio F March 1, 2016, 3:27 p.m. OK Java 8 TESTS 34 3337 177459200 2400
16720054 fmoraes F March 14, 2016, 6:46 p.m. OK Java 8 TESTS 34 3524 239923200 2400
16651810 iblacksun F March 11, 2016, 3:39 p.m. OK MS C++ TESTS 34 1279 31641600 2400
16469357 Taube F March 2, 2016, 4:57 p.m. OK MS C++ TESTS 34 1341 25190400 2400
16622327 AleksanderBalobanov F March 9, 2016, 6:29 p.m. OK MS C++ TESTS 34 1450 72806400 2400
16450068 sister_what_hate_most F March 1, 2016, 4:57 p.m. OK MS C++ TESTS 34 2791 101785600 2400
44947539 kobae964 F Oct. 27, 2018, 10:32 a.m. OK Rust TESTS 34 3650 256716800 2400

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