Codeforces Round 1024 (Div. 1)

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
2101 Codeforces Round 1024 (Div. 1) FINISHED False 9000 29431523 May 11, 2025, 2:35 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 1002 ) D Mani and Segments PROGRAMMING data structures implementation two pointers

An array (b) of length (|b|) is cute if the sum of the length of its Longest Increasing Subsequence (LIS) and the length of its Longest Decreasing Subsequence (LDS)(^{\text{∗}}) is exactly one more than the length of the array. More formally, the array (b) is cute if (\operatorname{LIS}(b) + \operatorname{LDS}(b) = |b| + 1). You are given a permutation (a) of length (n)(^{\text{†}}). Your task is to count the number of non-empty subarrays(^{\text{‡}}) of permutation (a) that are cute. (^{\text{∗}})A sequence (x) is a subsequence of a sequence (y) if (x) can be obtained from (y) by the deletion of several (possibly, zero or all) element from arbitrary positions. The longest increasing (decreasing) subsequence of an array is the longest subsequence such that its elements are ordered in strictly increasing (decreasing) order. (^{\text{†}})A permutation of length (n) is an array consisting of (n) distinct integers from (1) to (n) in arbitrary order. For example, (2,3,1,5,4) is a permutation, but (1,2,2) is not a permutation ((2) appears twice in the array), and (1,3,4) is also not a permutation ((n=3) but there is (4) in the array). (^{\text{‡}})An array (x) is a subarray of an array (y) if (x) can be obtained from (y) by the deletion of several (possibly, zero or all) elements from the beginning and several (possibly, zero or all) elements from the end. Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 10^4)). The description of the test cases follows. The first line of each test case contains a single integer (n) ((1\le n\le 2 \cdot 10^5)) — the length of permutation (a). The second line of each test case contains (n) integers (a_1, a_2, \ldots, a_n) ((1 \le a_i \le n)) — the elements of permutation (a). It is guaranteed that the sum of $

Tutorials

142788

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
319278351 DanTheMan. D May 11, 2025, 4:26 p.m. OK C++17 (GCC 7-32) TESTS 47 109 102400
319297064 AiPd D May 11, 2025, 6:22 p.m. OK C++17 (GCC 7-32) TESTS 47 109 1126400
319276725 QZJ666 D May 11, 2025, 4:21 p.m. OK C++17 (GCC 7-32) TESTS 47 109 4096000
319282457 KroosTheKeenGlint D May 11, 2025, 4:38 p.m. OK C++17 (GCC 7-32) TESTS 47 124 2457600
319289997 Muelsyse D May 11, 2025, 5:02 p.m. OK C++17 (GCC 7-32) TESTS 47 124 3276800
319268762 kai824 D May 11, 2025, 4 p.m. OK C++17 (GCC 7-32) TESTS 47 124 5017600
319290625 _luqyou_ D May 11, 2025, 5:04 p.m. OK C++17 (GCC 7-32) TESTS 47 156 40140800
319271256 LOL_I_AM_SERZH D May 11, 2025, 4:06 p.m. OK C++17 (GCC 7-32) TESTS 47 171 1945600
319282866 Sai_t D May 11, 2025, 4:40 p.m. OK C++17 (GCC 7-32) TESTS 47 233 19763200
319280998 Potassium D May 11, 2025, 4:34 p.m. OK C++17 (GCC 7-32) TESTS 47 265 11161600
319276231 Xylenox D May 11, 2025, 4:19 p.m. OK C++20 (GCC 13-64) TESTS 47 93 0
319317764 Zhouershan D May 12, 2025, 2 a.m. OK C++20 (GCC 13-64) TESTS 47 93 3788800
319304301 fractal D May 11, 2025, 7:54 p.m. OK C++20 (GCC 13-64) TESTS 47 93 8089600
319299574 fractal D May 11, 2025, 6:49 p.m. OK C++20 (GCC 13-64) TESTS 47 93 8089600
319317010 slzxpanhongxuan D May 12, 2025, 1:41 a.m. OK C++20 (GCC 13-64) TESTS 47 93 24064000
319290376 BalintR D May 11, 2025, 5:03 p.m. OK C++20 (GCC 13-64) TESTS 47 108 819200
319278287 HuaJun D May 11, 2025, 4:25 p.m. OK C++20 (GCC 13-64) TESTS 47 109 6963200
319266935 fishcathu D May 11, 2025, 3:56 p.m. OK C++20 (GCC 13-64) TESTS 47 124 8089600
319305452 crystal_castles D May 11, 2025, 8:12 p.m. OK C++20 (GCC 13-64) TESTS 47 124 11161600
319276432 Shifted D May 11, 2025, 4:20 p.m. OK C++20 (GCC 13-64) TESTS 47 139 1945600
319323537 Nlll D May 12, 2025, 3:55 a.m. OK C++23 (GCC 14-64, msys2) TESTS 47 78 102400
319323514 krit3379 D May 12, 2025, 3:54 a.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 102400
319279675 Mr.Bebra D May 11, 2025, 4:30 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 102400
319299971 aimoon D May 11, 2025, 6:53 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 1228800
319290664 Dalek_of_Rivia D May 11, 2025, 5:04 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 1228800
319247463 ecnerwala D May 11, 2025, 3:24 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 2048000
319297801 bookcat D May 11, 2025, 6:29 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 3276800
319270423 olmrgcsi D May 11, 2025, 4:04 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 93 4812800
319275366 Halzion D May 11, 2025, 4:17 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 108 102400
319288841 superguymj D May 11, 2025, 4:59 p.m. OK C++23 (GCC 14-64, msys2) TESTS 47 108 512000
319300464 rainboy D May 11, 2025, 7 p.m. OK GNU C11 TESTS 47 93 2457600
319325322 muradbhai D May 12, 2025, 4:25 a.m. OK GNU C11 TESTS 47 93 4096000
319325077 muradbhai D May 12, 2025, 4:21 a.m. OK GNU C11 TESTS 47 93 4096000
319286055 rainboy D May 11, 2025, 4:50 p.m. OK GNU C11 TESTS 47 249 9113600
319324037 golions D May 12, 2025, 4:03 a.m. OK Java 8 TESTS 47 218 819200
319307211 golions D May 11, 2025, 8:43 p.m. OK Java 8 TESTS 47 218 819200
319325013 golions D May 12, 2025, 4:20 a.m. OK Java 8 TESTS 47 249 716800
319254559 Tlatoani D May 11, 2025, 3:37 p.m. OK Kotlin 1.9 TESTS 47 593 16076800
319320891 smilences D May 12, 2025, 3:08 a.m. OK PyPy 3-64 TESTS 47 546 27852800
319281993 conqueror_of_tourist D May 11, 2025, 4:37 p.m. OK PyPy 3-64 TESTS 47 593 30208000
319280319 titia D May 11, 2025, 4:32 p.m. OK PyPy 3-64 TESTS 47 858 27238400
319258492 Egor D May 11, 2025, 3:42 p.m. OK Rust 2021 TESTS 47 765 14028800

remove filters

Back to search problems