Codeforces Round 1040 (Div. 1)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
2129 Codeforces Round 1040 (Div. 1) FINISHED False 10800 22519484 July 31, 2025, 2:35 p.m.

Problems

Solved
Index
Name
Type
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Community Tag
Rating
( 95 ) F2 Top-K Tracker (Hard Version) PROGRAMMING interactive interactive

This is an interactive problem. This is the hard version of the problem. The only difference is that (n \le 890) in this version. You can make hacks only if all versions of the problem are solved. There is a hidden permutation (p), which is a permutation of (\{1,2,\ldots,n\}). Let (pos_i) denote the position of the value (i) in (p), i.e., (pos_{p_i} = i). To find this permutation, you can ask four types of queries: "(1\ m\ i_1\ i_2\ \ldots\ i_m)" ((1 \leq m \leq n), (i_1,\ i_2,\ \ldots,\ i_m) must be distinct). Let (k = \min(60, m)). The jury will return the top (k) largest number(s) in (p_{i_1}, p_{i_2}, \ldots, p_{i_m}) in increasing order. "(2\ m\ i_1\ i_2\ \ldots\ i_m)" ((1 \leq m \leq n), (i_1,\ i_2,\ \ldots,\ i_m) must be distinct). Let (k = \min(60, m)). The jury will return the top (k) largest number(s) in (pos_{i_1}, pos_{i_2}, \ldots, pos_{i_m}) in increasing order. "(3\ m\ i_1\ i_2\ ...\ i_m)" ((1 \leq m \leq n), (i_1,\ i_2,\ ...,\ i_m) must be distinct). Let (k = \min(300, m)). The jury will return the top (k) largest number(s) in (p_{i_1}, p_{i_2}, ..., p_{i_m}) in increasing order. "(4\ m\ i_1\ i_2\ \ldots\ i_m)" ((1 \leq m \leq n), (i_1,\ i_2,\ \ldots,\ i_m) must be distinct). Let (k = \min(300, m)). The jury will return the top (k) largest number(s) in (pos_{i_1}, pos_{i_2}, \ldots, pos_{i_m}) in increasing order. Let (c_i) be the usage count of queries of type (i) ((1 \le i \le 4)). Your query count must satisfy the following constraints: (c_1+c_2+c_3+c_4 \le 30.) (c_3+c_4 \le 1.) Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 40)). The description of the test cases follows. The first line of each test case contains one integer (n) ((2 \le n \le 890)). At this moment, the permutation (p) is chosen. The interacto

Tutorials

Codeforces Round 1040 (Div. 1, Div. 2) Editorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
331867414 jiangly F2 July 31, 2025, 8:27 p.m. OK C++23 (GCC 14-64, msys2) TESTS 32 171 102400
331843941 Kevin114514 F2 July 31, 2025, 5:04 p.m. OK C++23 (GCC 14-64, msys2) TESTS 32 218 102400
331895352 sjxnn74 F2 Aug. 1, 2025, 3:48 a.m. OK PyPy 3-64 TESTS 32 405 9113600

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