Solutions are presented as using the least memory and the fastest execution time. It also takes the top 10 most recent solutions from each language. If you want to limit to a specific index, click the "Solved" button and go to that problem.
ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
---|---|---|---|---|---|---|
1864 | Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) | FINISHED | False | 10800 | 44119463 | Aug. 26, 2023, 2:35 p.m. |
Solved$ |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
---|---|---|---|---|---|---|
( 300 ) | H | Asterism Stream | PROGRAMMING | dp math matrices probabilities |
B'Bogocubic is playing a game with amenotiomoi. First, Bogocubic fixed an integer n , and then he gave amenotiomoi an integer x which is initially equal to 1 . In one move amenotiomoi performs one of the following operations with the same probability: Bogocubic wants to find the expected number of moves amenotiomoi has to do to make x greater than or equal to n . Help him find this number modulo 998 ,244 ,353 . Formally, let M = 998 ,244 ,353 . It can be shown that the answer can be expressed as an irreducible fraction frac{p}{q} , where p and q are integers and q not equiv 0 pmod{M} . Output the integer equal to p cdot q^{-1} bmod M . In other words, output such an integer y that 0 <= y < M and y cdot q equiv p pmod{M} . Each test contains multiple test cases. The first line contains the number of test cases t ( 1 <= t <= 100 ). The description of the test cases follows. The only line of each test case contains one integer n ( 1 <= n <= 10^{18} ). For each test case, output a single integer -- the expected number of moves modulo 998 ,244 ,353 . In the first test case, n <= x without any operations, so the answer is 0 . In the second test case, for n = 4 , here is the list of all possible sequences of operations and their probabilities: So the expected number of moves is 4 cdot <= ft(3 cdot frac{1}{8} right) + 2 cdot <= ft(2 cdot frac{1}{4} right) = frac{5}{2} equiv 499122179 pmod{998244353} . In the third test case, for n = 8 , the expected number of moves is frac{137}{32} equiv 717488133 pmod{998244353} . In the fourth test case, for n = 15 , the expected number of moves is frac{24977}{4096} equiv 900515847 pmod{998244353} . '... |
Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
---|---|---|---|---|---|---|---|---|---|---|---|
220592711 | Aokana | H | Aug. 26, 2023, 5:16 p.m. | OK | GNU C++14 | TESTS | 11 | 109 | 204800 | ||
220621408 | csyakuoi | H | Aug. 26, 2023, 11:37 p.m. | OK | GNU C++14 | TESTS | 11 | 421 | 10649600 | ||
220613114 | Hack.404 | H | Aug. 26, 2023, 8:53 p.m. | OK | GNU C++17 | TESTS | 11 | 265 | 2355200 | ||
220625534 | zhangmj2008 | H | Aug. 27, 2023, 1:29 a.m. | OK | GNU C++17 (64) | TESTS | 11 | 77 | 0 | ||
220585832 | SSRS_ | H | Aug. 26, 2023, 4:50 p.m. | OK | GNU C++17 (64) | TESTS | 11 | 109 | 102400 | ||
220629661 | kondasujay2 | H | Aug. 27, 2023, 3:03 a.m. | OK | GNU C++17 (64) | TESTS | 11 | 124 | 4403200 | ||
220597035 | ifonlyicould | H | Aug. 26, 2023, 5:33 p.m. | OK | GNU C++17 (64) | TESTS | 11 | 826 | 112640000 | ||
220629401 | orzdevinwang | H | Aug. 27, 2023, 2:59 a.m. | OK | GNU C++17 (64) | TESTS | 11 | 1014 | 34099200 | ||
220620338 | akdfjhafjlk | H | Aug. 26, 2023, 11:07 p.m. | OK | GNU C++17 (64) | TESTS | 11 | 1232 | 0 | ||
220606213 | Geothermal | H | Aug. 26, 2023, 7:44 p.m. | OK | GNU C++17 (64) | TESTS | 11 | 1544 | 921600 | ||
220596085 | 353cerega | H | Aug. 26, 2023, 5:29 p.m. | OK | GNU C++17 (64) | TESTS | 11 | 2652 | 0 | ||
220628106 | Mr_Wu | H | Aug. 27, 2023, 2:31 a.m. | OK | GNU C++20 (64) | TESTS | 11 | 31 | 0 | ||
220588653 | Brewess | H | Aug. 26, 2023, 5:01 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 46 | 2048000 | ||
220631594 | BurnedChicken | H | Aug. 27, 2023, 3:40 a.m. | OK | GNU C++20 (64) | TESTS | 11 | 46 | 6246400 | ||
220612740 | maspy | H | Aug. 26, 2023, 8:49 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 78 | 102400 | ||
220590968 | Um_nik | H | Aug. 26, 2023, 5:09 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 93 | 2048000 | ||
220586273 | hos.lyric | H | Aug. 26, 2023, 4:52 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 109 | 102400 | ||
220592706 | Ormlis | H | Aug. 26, 2023, 5:16 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 109 | 8806400 | ||
220631078 | bachbeo2007 | H | Aug. 27, 2023, 3:30 a.m. | OK | GNU C++20 (64) | TESTS | 11 | 171 | 2560000 | ||
220587781 | gisp_zjz | H | Aug. 26, 2023, 4:57 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 655 | 1024000 | ||
220584872 | jiangly | H | Aug. 26, 2023, 4:47 p.m. | OK | GNU C++20 (64) | TESTS | 11 | 733 | 0 | ||
220597363 | conqueror_of_tourist | H | Aug. 26, 2023, 5:34 p.m. | OK | PyPy 3-64 | TESTS | 11 | 2994 | 26214400 | ||
220614708 | sansen | H | Aug. 26, 2023, 9:16 p.m. | OK | Rust 2021 | TESTS | 11 | 62 | 102400 |
Back to search problems