Codeforces Round 277.5 (Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
489 Codeforces Round 277.5 (Div. 2) FINISHED False 9000 360167123 Nov. 17, 2014, 3:35 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 1144 ) E Hiking PROGRAMMING binary search dp 2700

A traveler is planning a water hike along the river. He noted the suitable rest points for the night and wrote out their distances from the starting point. Each of these locations is further characterized by its picturesqueness , so for the i -th rest point the distance from the start equals x i , and its picturesqueness equals b i . The traveler will move down the river in one direction, we can assume that he will start from point 0 on the coordinate axis and rest points are points with coordinates x i . Every day the traveler wants to cover the distance l . In practice, it turns out that this is not always possible, because he needs to end each day at one of the resting points. In addition, the traveler is choosing between two desires: cover distance l every day and visit the most picturesque places. Let's assume that if the traveler covers distance r j in a day, then he feels frustration , and his total frustration over the hike is calculated as the total frustration on all days. Help him plan the route so as to minimize the relative total frustration : the total frustration divided by the total picturesqueness of all the rest points he used. The traveler's path must end in the farthest rest point. The first line of the input contains integers n , l ( 1 ≤ n ≤ 1000, 1 ≤ l ≤ 10 5 ) — the number of rest points and the optimal length of one day path. Then n lines follow, each line describes one rest point as a pair of integers x i , b i ( 1 ≤ x i , b i ≤ 10 6 ). No two rest points have the same x i , the lines are given in the order of strictly increasing x i . Print the traveler's path as a sequence of the numbers of the resting points he used in the order he used them. Number the points from 1 to n in the order of increasing x i . The last printed number must be equal to n . In the sample test the minimum value of relative total frustration approximately equals 0.097549. This value can be calculated as .

Tutorials

Codeforces Round #277.5 (Div. 2) Editorial [A-D for now]

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
40378772 eriksuenderhauf E July 15, 2018, 12:42 p.m. OK GNU C++11 TESTS 68 62 8192000 2700
49636782 anjn98 E Feb. 8, 2019, 7:08 p.m. OK GNU C++11 TESTS 68 78 102400 2700
57929668 luogu_bot1 E July 29, 2019, 8:18 a.m. OK GNU C++11 TESTS 68 139 102400 2700
44490471 luogu_bot1 E Oct. 18, 2018, 2:16 p.m. OK GNU C++11 TESTS 68 140 102400 2700
49492781 alex_Harry E Feb. 5, 2019, 11:02 a.m. OK GNU C++11 TESTS 68 156 0 2700
62251234 Llf0703 E Oct. 10, 2019, 9:20 a.m. OK GNU C++11 TESTS 68 171 0 2700
58116608 luogu_bot3 E Aug. 1, 2019, 9:04 a.m. OK GNU C++11 TESTS 68 171 2764800 2700
58116526 luogu_bot1 E Aug. 1, 2019, 9:03 a.m. OK GNU C++11 TESTS 68 171 2764800 2700
58158228 luogu_bot2 E Aug. 2, 2019, 6:30 a.m. OK GNU C++11 TESTS 68 202 409600 2700
42781965 Xi_Jinping E Sept. 11, 2018, 10:21 p.m. OK GNU C++11 TESTS 68 217 24064000 2700
40987644 ReaLNero1 E July 30, 2018, 9:23 p.m. OK GNU C++14 TESTS 68 46 0 2700
42223504 sggutier E Aug. 28, 2018, 11:48 p.m. OK GNU C++14 TESTS 68 62 8089600 2700
67897077 mota_haathi E Dec. 29, 2019, 2:38 p.m. OK GNU C++14 TESTS 68 109 0 2700
65638707 thanhtam1821 E Nov. 24, 2019, 8:49 a.m. OK GNU C++14 TESTS 68 109 0 2700
54560239 coder_rk98 E May 24, 2019, 1:36 p.m. OK GNU C++14 TESTS 68 124 0 2700
56504653 megatron10599 E July 4, 2019, 7:56 a.m. OK GNU C++14 TESTS 68 139 0 2700
53375062 bhargav_0085 E April 26, 2019, 7:20 p.m. OK GNU C++14 TESTS 68 139 0 2700
53375044 bhargav_0085 E April 26, 2019, 7:19 p.m. OK GNU C++14 TESTS 68 140 0 2700
51604507 KATATONIA E March 21, 2019, 6:37 a.m. OK GNU C++14 TESTS 68 218 204800 2700
59816518 ayk16 E Aug. 31, 2019, 3:32 p.m. OK GNU C++14 TESTS 68 234 307200 2700
63541515 hjk1030 E Oct. 27, 2019, 9:29 a.m. OK GNU C++17 TESTS 68 93 0 2700
47525415 lohit_97 E Dec. 26, 2018, 3:34 p.m. OK GNU C++17 TESTS 68 93 0 2700
58853953 aZvezda E Aug. 15, 2019, 8:33 a.m. OK GNU C++17 TESTS 68 124 102400 2700
65578546 tpaaaa E Nov. 23, 2019, 10:15 a.m. OK GNU C++17 TESTS 68 156 2048000 2700
42740242 majk E Sept. 10, 2018, 3:51 p.m. OK GNU C++17 TESTS 68 186 0 2700
39653893 cai_lw E June 25, 2018, 3:39 p.m. OK GNU C++17 TESTS 68 187 0 2700
62168631 Umi E Oct. 8, 2019, 10:18 p.m. OK GNU C++17 TESTS 68 217 0 2700
69378034 limabeans E Jan. 22, 2020, 6:44 p.m. OK GNU C++17 TESTS 68 218 0 2700
61608774 ruo E Oct. 1, 2019, 1:30 p.m. OK GNU C++17 TESTS 68 233 0 2700
59975997 Skybytskyi.Nikita E Sept. 4, 2019, 5:52 a.m. OK GNU C++17 TESTS 68 234 0 2700
58939461 dodoBehind E Aug. 17, 2019, 6:16 a.m. OK Java 8 TESTS 68 187 0 2700
58644430 dodoBehind E Aug. 12, 2019, 5:13 a.m. OK Java 8 TESTS 68 202 0 2700
41432838 amnesiac_dusk E Aug. 10, 2018, 1:28 p.m. OK Java 8 TESTS 68 405 4608000 2700
58639790 dodoBehind E Aug. 12, 2019, 2:44 a.m. OK Java 8 TESTS 68 452 0 2700
58643892 dodoBehind E Aug. 12, 2019, 5 a.m. OK Java 8 TESTS 68 499 0 2700
59824770 Hadjar E Aug. 31, 2019, 6:56 p.m. OK Kotlin TESTS 68 467 0 2700

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