Educational Codeforces Round 75 (Rated for Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
1251 Educational Codeforces Round 75 (Rated for Div. 2) FINISHED False 7200 165509687 Oct. 24, 2019, 3:05 p.m.

Problems

Solved$
Index
Name
Type
Tags
Community Tag
Rating
( 840 ) F Red-White Fence PROGRAMMING combinatorics fft 2600

B"Polycarp wants to build a fence near his house. He has n white boards and k red boards he can use to build it. Each board is characterised by its length, which is an integer. A good fence should consist of exactly one red board and several (possibly zero) white boards. The red board should be the longest one in the fence (every white board used in the fence should be strictly shorter), and the sequence of lengths of boards should be ascending before the red board and descending after it. Formally, if m boards are used, and their lengths are l_1 , l_2 , ..., l_m in the order they are placed in the fence, from left to right (let's call this array [l_1, l_2, ... , l_m] the array of lengths), the following conditions should hold: When Polycarp will build his fence, he will place all boards from left to right on the same height of 0 , without any gaps, so these boards compose a polygon: Polycarp is interested in fences of some special perimeters. He has q even integers he really likes (these integers are Q_1 , Q_2 , ..., Q_q ), and for every such integer Q_i , he wants to calculate the number of different fences with perimeter Q_i he can build (two fences are considered different if their arrays of lengths are different). Can you help him calculate these values? The first line contains two integers n and k ( 1 <= n <= 3 cdot 10^5 , 1 <= k <= 5 ) -- the number of white and red boards Polycarp has. The second line contains n integers a_1 , a_2 , ..., a_n ( 1 <= a_i <= 3 cdot 10^5 ) -- the lengths of white boards Polycarp has. The third line contains k integers b_1 , b_2 , ..., b_k ( 1 <= b_i <= 3 cdot 10^5 ) -- the lengths of red boards Polycarp has. All b_i are distinct. The fourth line contains one integer q ( 1 <= q <= 3 cdot 10^5 ) -- the number of special integers. The fifth l"...

Tutorials

70860

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
63348955 rainboy F Oct. 24, 2019, 8:38 p.m. OK GNU C11 TESTS 107 3135 19558400 2600
63327564 rainboy F Oct. 24, 2019, 4:17 p.m. OK GNU C11 TESTS 107 4804 35430400 2600
63396910 vjudge2 F Oct. 25, 2019, 4:58 p.m. OK GNU C++11 TESTS 107 1013 47411200 2600
63428860 vjudge1 F Oct. 26, 2019, 8:35 a.m. OK GNU C++11 TESTS 107 1169 28057600 2600
64237929 8300590 F Nov. 4, 2019, 2:17 p.m. OK GNU C++11 TESTS 107 1185 57344000 2600
63385495 JKLover F Oct. 25, 2019, 1:39 p.m. OK GNU C++11 TESTS 107 1232 93798400 2600
69165818 Eganrak F Jan. 20, 2020, 3:40 a.m. OK GNU C++11 TESTS 107 1326 90009600 2600
63908957 tyler178 F Oct. 31, 2019, 7:33 a.m. OK GNU C++11 TESTS 107 1372 41984000 2600
63766862 ezhjw F Oct. 30, 2019, 6:32 a.m. OK GNU C++11 TESTS 107 1372 103936000 2600
63366096 danya090699 F Oct. 25, 2019, 7:32 a.m. OK GNU C++11 TESTS 107 1387 94822400 2600
67426975 Hatate F Dec. 22, 2019, 1:48 p.m. OK GNU C++11 TESTS 107 1419 23859200 2600
63406030 qxforever F Oct. 25, 2019, 8:26 p.m. OK GNU C++11 TESTS 107 1450 113766400 2600
63366162 liouzhou_101 F Oct. 25, 2019, 7:34 a.m. OK GNU C++14 TESTS 107 249 32051200 2600
63335974 Taran_1407 F Oct. 24, 2019, 4:57 p.m. OK GNU C++14 TESTS 107 390 18739200 2600
63365447 liouzhou_101 F Oct. 25, 2019, 7:18 a.m. OK GNU C++14 TESTS 107 873 30310400 2600
65162565 xzsunbest F Nov. 16, 2019, 11:59 a.m. OK GNU C++14 TESTS 107 935 52633600 2600
63643777 tlylz99 F Oct. 28, 2019, 8:57 a.m. OK GNU C++14 TESTS 107 951 60518400 2600
63325885 risujiroh F Oct. 24, 2019, 4:10 p.m. OK GNU C++14 TESTS 107 982 58777600 2600
67030944 tejas_919 F Dec. 16, 2019, 3:49 p.m. OK GNU C++14 TESTS 107 997 22835200 2600
64349370 follower0523 F Nov. 6, 2019, 7:42 a.m. OK GNU C++14 TESTS 107 1013 22118400 2600
67031254 tejas_919 F Dec. 16, 2019, 3:55 p.m. OK GNU C++14 TESTS 107 1013 22835200 2600
64355224 follower0523 F Nov. 6, 2019, 9:57 a.m. OK GNU C++14 TESTS 107 1044 22323200 2600
63396794 neal F Oct. 25, 2019, 4:56 p.m. OK GNU C++17 TESTS 107 187 21504000 2600
63395657 neal F Oct. 25, 2019, 4:35 p.m. OK GNU C++17 TESTS 107 202 23961600 2600
64512307 ffao F Nov. 8, 2019, 9:16 a.m. OK GNU C++17 TESTS 107 358 30105600 2600
64490821 ffao F Nov. 7, 2019, 7:52 p.m. OK GNU C++17 TESTS 107 452 30003200 2600
64462737 ffao F Nov. 7, 2019, 10:54 a.m. OK GNU C++17 TESTS 107 514 32153600 2600
63340397 neal F Oct. 24, 2019, 5:30 p.m. OK GNU C++17 TESTS 107 592 25907200 2600
63348518 saketh F Oct. 24, 2019, 8:25 p.m. OK GNU C++17 TESTS 107 670 23244800 2600
64461796 ffao F Nov. 7, 2019, 10:38 a.m. OK GNU C++17 TESTS 107 670 32051200 2600
63340247 neal F Oct. 24, 2019, 5:28 p.m. OK GNU C++17 TESTS 107 779 25907200 2600
63427571 jiangly F Oct. 26, 2019, 8:16 a.m. OK GNU C++17 TESTS 107 826 16896000 2600
63349226 Dukkha F Oct. 24, 2019, 8:46 p.m. OK Java 11 TESTS 107 3587 28876800 2600
63348947 Dukkha F Oct. 24, 2019, 8:38 p.m. OK Java 11 TESTS 107 3650 28876800 2600
63349151 Dukkha F Oct. 24, 2019, 8:44 p.m. OK Java 11 TESTS 107 3743 28876800 2600
63348926 Dukkha F Oct. 24, 2019, 8:37 p.m. OK Java 8 TESTS 107 3509 26521600 2600
66157197 AnandOza F Dec. 2, 2019, 12:17 a.m. OK Java 8 TESTS 107 3681 58572800 2600
65896059 dalt F Nov. 28, 2019, 6:14 a.m. OK Java 8 TESTS 107 3759 51712000 2600
66157070 AnandOza F Dec. 2, 2019, 12:05 a.m. OK Java 8 TESTS 107 4226 58572800 2600
63883217 Ahmad F Oct. 30, 2019, 10:26 p.m. OK Java 8 TESTS 107 4929 268492800 2600
64895058 Tlatoani F Nov. 14, 2019, 4:14 p.m. OK Kotlin TESTS 107 4976 52838400 2600
64083275 r57shell F Nov. 2, 2019, 10:47 a.m. OK MS C++ TESTS 107 1497 91955200 2600
64082880 r57shell F Nov. 2, 2019, 10:42 a.m. OK MS C++ TESTS 107 1497 91955200 2600
64161236 r57shell F Nov. 3, 2019, 2:36 p.m. OK MS C++ TESTS 107 1512 91955200 2600
64081494 r57shell F Nov. 2, 2019, 10:22 a.m. OK MS C++ TESTS 107 2167 159232000 2600
64078922 r57shell F Nov. 2, 2019, 9:33 a.m. OK MS C++ TESTS 107 2199 24678400 2600
64079720 r57shell F Nov. 2, 2019, 9:49 a.m. OK MS C++ TESTS 107 2230 24678400 2600
64080972 r57shell F Nov. 2, 2019, 10:14 a.m. OK MS C++ TESTS 107 2230 159232000 2600
63507019 r57shell F Oct. 26, 2019, 7:05 p.m. OK MS C++ TESTS 107 3572 26419200 2600
63506550 r57shell F Oct. 26, 2019, 6:54 p.m. OK MS C++ TESTS 107 4211 26419200 2600
63471726 pichulia F Oct. 26, 2019, 12:13 p.m. OK MS C++ 2017 TESTS 107 2121 27648000 2600
63368839 sansen F Oct. 25, 2019, 8:35 a.m. OK Rust TESTS 107 3135 15667200 2600

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