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 |
|---|---|---|---|---|---|---|
| 2081 | Codeforces Round 1010 (Div. 1, Unrated) | FINISHED | False | 10800 | 34356323 | March 15, 2025, 2:35 p.m. |
Solved |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
|---|---|---|---|---|---|---|
| ( 139 ) | F | Hot Matrix | PROGRAMMING | constructive algorithms math |
Piggy Zhou loves matrices, especially those that make him get excited, called hot matrix . A hot matrix of size (n \times n) can be defined as follows. Let (a_{i, j}) denote the element in the (i)-th row, (j)-th column ((1 \le i, j \le n)). Each column and row of the matrix is a permutation of all numbers from (0) to (n-1). For each pair of indices (i), (j), such that (1 \le i, j \le n), (a_{i, j} + a_{i, n - j + 1} = n - 1). For each pair of indices (i), (j), such that (1 \le i, j \le n), (a_{i, j} + a_{n - i + 1, j} = n - 1). All ordered pairs (\left(a_{i, j}, a_{i, j + 1}\right)), where (1 \le i \le n), (1 \le j < n), are distinct. All ordered pairs (\left(a_{i, j}, a_{i + 1, j}\right)), where (1 \le i < n), (1 \le j \le n), are distinct. Now, Piggy Zhou gives you a number (n), and you need to provide him with a hot matrix if the hot matrix exists for the given (n), or inform him that he will never get excited if the hot matrix does not exist for the given (n). Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 1000)). The description of the test cases follows. The only line of each test case contains one integer (n) ((1 \le n \le 3000)). It is guaranteed that the sum of (n) across all test cases does not exceed (3000). For each test case, print " NO " (without quotes) if the hot matrix does not exist for the given (n). Otherwise, print " YES " (without quotes) on the first line. Then output (n) rows, with (n) numbers in each row, representing the hot matrix of size (n\times n) that meets the requirements of the problem. If there are multiple solutions, print any of them. In the first, second and fourth test case, it can be verified that the matrix provided in the example meets all the conditions stated in the problem. In the third test case, by enumerating all pos |
| Codeforces Round 1010 (Div. 1, Div. 2, based on Zhili Cup 2025) Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 310771700 | potato167 | F | March 15, 2025, 5:13 p.m. | OK | C++17 (GCC 7-32) | TESTS | 13 | 921 | 45260800 | ||
| 310762358 | cdxcdxcdxcdx | F | March 15, 2025, 4:21 p.m. | OK | C++20 (GCC 13-64) | TESTS | 13 | 483 | 24985600 | ||
| 310754815 | A_G | F | March 15, 2025, 3:48 p.m. | OK | C++20 (GCC 13-64) | TESTS | 13 | 531 | 102400 | ||
| 310779543 | A_G | F | March 15, 2025, 6:11 p.m. | OK | C++20 (GCC 13-64) | TESTS | 13 | 546 | 102400 | ||
| 310801279 | Sparkle_Twilight | F | March 15, 2025, 9:43 p.m. | OK | C++20 (GCC 13-64) | TESTS | 13 | 639 | 35532800 | ||
| 310787520 | Benq | F | March 15, 2025, 7:19 p.m. | OK | C++20 (GCC 13-64) | TESTS | 13 | 671 | 35532800 | ||
| 310765116 | Alex239 | F | March 15, 2025, 4:35 p.m. | OK | C++20 (GCC 13-64) | TESTS | 13 | 2936 | 75366400 | ||
| 310784390 | jatking | F | March 15, 2025, 6:51 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 13 | 577 | 0 | ||
| 310769239 | arvindf232 | F | March 15, 2025, 4:58 p.m. | OK | Kotlin 1.9 | TESTS | 13 | 1124 | 80896000 |
Back to search problems