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ContestId |
Name |
Phase |
Frozen |
Duration (Seconds) |
Relative Time |
Start Time |
|---|---|---|---|---|---|---|
| 2241 | Codeforces Round 1107 (Div. 3) | FINISHED | False | 8100 | 3079510 | June 30, 2026, 2:35 p.m. |
Solved |
Index |
Name |
Type |
Tags |
Community Tag |
Rating |
|---|---|---|---|---|---|---|
| ( 15936 ) | D | An Alternative Way | PROGRAMMING | dp greedy math |
You are given two arrays (a) and (b), each of length (n). You are allowed to perform the following operation on array (a) any number of times (including zero): Choose two indices (l) and (r) such that (1 \le l \le r \le n); For each index (i) from (l) to (r) (both inclusive), Set (a_i := a_i - 1) if (i - l) is odd. Set (a_i := a_i + 1) if (i - l) is even. Set (a_i := a_i - 1) if (i - l) is odd. Set (a_i := a_i + 1) if (i - l) is even. Determine whether you can make the array (a) equal to the array (b) by performing the operation any number of times. The first line contains a single integer (t) ((1 \le t \le 10^4)) — the number of test cases. Description of each test case follows. The first line of each test case contains a single integer (n) ((1 \le n \le 2\cdot10^5)) — the length of the arrays (a) and (b). The second line of each test case contains (n) integers (a_1, a_2, \ldots, a_n) ((1 \le a_i \le 10^9)) — the elements of the array (a). The third line of each test case contains (n) integers (b_1, b_2, \ldots, b_n) ((1 \le b_i \le 10^9)) — the elements of the array (b). It is guaranteed that the sum of (n) over all test cases does not exceed (2\cdot10^5). For each test case, print " YES " if you can make array (a) equal to array (b) and " NO " otherwise. You can output " YES " and " NO " in any case (for example, strings " yEs ", " yes " and " Yes " will be recognized as a positive response). For the first test case, arrays (a) and (b) are already equal. For the second test case, let us choose (l = 2) and (r = 4). Now, we update the array (a) in the following manner: For (i = 2), we have (i - l = 2 - 2 = 0), which is even. Hence, set (a_2 := a_2 + 1 = 4 + 1 = 5). For (i = 3), we have (i - l = 3 - 2 = 1), which is odd. Hence, set (a_3 := a_3 - 1 = 5 - 1 = 4). Fo |
| Codeforces Round 1107 (Div. 3) Editorial |
Submission Id |
Author(s) |
Index |
Submitted |
Verdict |
Language |
Test Set |
Tests Passed |
Time taken (ms) |
Memory Consumed (bytes) |
Tags |
Rating |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 380842617 | IRacle | D | June 30, 2026, 6:50 p.m. | OK | C# 13 | TESTS | 10 | 109 | 40038400 | ||
| 380843546 | volhalink | D | June 30, 2026, 7:03 p.m. | OK | C# 13 | TESTS | 10 | 125 | 41881600 | ||
| 380948264 | kamisama02 | D | July 1, 2026, 6:13 p.m. | OK | C# 13 | TESTS | 10 | 250 | 49868800 | ||
| 380982011 | coder__07 | D | July 2, 2026, 6:02 a.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380977658 | rajsurajr | D | July 2, 2026, 4:57 a.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380975145 | fonming | D | July 2, 2026, 4:12 a.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380968075 | BURNBURNBURN | D | July 2, 2026, 1:41 a.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380964846 | MishaGromov_Prlmn | D | July 1, 2026, 11:52 p.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380964367 | kenzy_elzazy | D | July 1, 2026, 11:32 p.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380959782 | lorantbangha | D | July 1, 2026, 9:03 p.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380955497 | pouyaaa | D | July 1, 2026, 7:45 p.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380952922 | err | D | July 1, 2026, 7:06 p.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380952887 | err | D | July 1, 2026, 7:06 p.m. | OK | C++17 (GCC 7-32) | TESTS | 10 | 109 | 0 | ||
| 380927899 | lohitpt252003 | D | July 1, 2026, 2:53 p.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 78 | 0 | ||
| 380976946 | vivek_110 | D | July 2, 2026, 4:45 a.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380976297 | Nothing_cp | D | July 2, 2026, 4:33 a.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380973805 | St.0.3 | D | July 2, 2026, 3:49 a.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380971536 | baodinh11 | D | July 2, 2026, 3:05 a.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380964027 | hello1_ | D | July 1, 2026, 11:17 p.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380959096 | adarshchess | D | July 1, 2026, 8:50 p.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380950173 | Himanshu3480 | D | July 1, 2026, 6:31 p.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380947260 | basmala_hesham | D | July 1, 2026, 6:03 p.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380946688 | winter238 | D | July 1, 2026, 5:57 p.m. | OK | C++20 (GCC 13-64) | TESTS | 10 | 93 | 0 | ||
| 380970001 | aste_risk | D | July 2, 2026, 2:33 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380965550 | salomaoferreira | D | July 2, 2026, 12:16 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380958430 | Sasidhar1906 | D | July 1, 2026, 8:36 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380957867 | Sasidhar1906 | D | July 1, 2026, 8:25 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380941893 | akramzaabi7 | D | July 1, 2026, 5:08 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380914612 | Shargik | D | July 1, 2026, 1:02 p.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380893086 | .Something | D | July 1, 2026, 10 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380868315 | nullptr__07 | D | July 1, 2026, 5:24 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380867301 | Shahriyar_Joy | D | July 1, 2026, 5:10 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380865577 | kiyotaka817 | D | July 1, 2026, 4:46 a.m. | OK | C++23 (GCC 14-64, msys2) | TESTS | 10 | 78 | 0 | ||
| 380895661 | gs008 | D | July 1, 2026, 10:24 a.m. | OK | GNU C11 | TESTS | 10 | 93 | 1740800 | ||
| 380884288 | xin1_ | D | July 1, 2026, 8:43 a.m. | OK | GNU C11 | TESTS | 10 | 93 | 3174400 | ||
| 380897481 | pigeonpie | D | July 1, 2026, 10:42 a.m. | OK | GNU C11 | TESTS | 10 | 109 | 3174400 | ||
| 380926089 | ananyadontha | D | July 1, 2026, 2:37 p.m. | OK | GNU C11 | TESTS | 10 | 109 | 3276800 | ||
| 380883774 | xin1_ | D | July 1, 2026, 8:38 a.m. | OK | GNU C11 | TESTS | 10 | 109 | 3276800 | ||
| 380908806 | ananyadontha | D | July 1, 2026, 12:16 p.m. | OK | GNU C11 | TESTS | 10 | 125 | 1740800 | ||
| 380877519 | QHU_MaXiangyu | D | July 1, 2026, 7:26 a.m. | OK | GNU C11 | TESTS | 10 | 125 | 3174400 | ||
| 380944244 | CodeSagar | D | July 1, 2026, 5:33 p.m. | OK | GNU C11 | TESTS | 10 | 140 | 3276800 | ||
| 380898206 | dxtmanav | D | July 1, 2026, 10:48 a.m. | OK | Java 21 | TESTS | 10 | 218 | 307200 | ||
| 380846150 | naman2277 | D | June 30, 2026, 7:44 p.m. | OK | Java 21 | TESTS | 10 | 218 | 409600 | ||
| 380886476 | shubhamX54 | D | July 1, 2026, 9:03 a.m. | OK | Java 21 | TESTS | 10 | 250 | 716800 | ||
| 380866541 | varunkadaverla21 | D | July 1, 2026, 4:59 a.m. | OK | Java 21 | TESTS | 10 | 265 | 9011200 | ||
| 380925618 | Ramm_Lakshmanan | D | July 1, 2026, 2:33 p.m. | OK | Java 21 | TESTS | 10 | 296 | 3481600 | ||
| 380979247 | rajganatra011 | D | July 2, 2026, 5:24 a.m. | OK | Java 21 | TESTS | 10 | 296 | 6041600 | ||
| 380884478 | JohnKramer | D | July 1, 2026, 8:45 a.m. | OK | Java 21 | TESTS | 10 | 312 | 409600 | ||
| 380884243 | JohnKramer | D | July 1, 2026, 8:42 a.m. | OK | Java 21 | TESTS | 10 | 312 | 716800 | ||
| 380931376 | AK1117 | D | July 1, 2026, 3:23 p.m. | OK | Java 21 | TESTS | 10 | 312 | 5632000 | ||
| 380847606 | dzhi | D | June 30, 2026, 8:11 p.m. | OK | Java 21 | TESTS | 10 | 312 | 6963200 | ||
| 380936415 | Vishalll_ | D | July 1, 2026, 4:13 p.m. | OK | Java 8 | TESTS | 10 | 656 | 0 | ||
| 380889801 | Ell | D | July 1, 2026, 9:32 a.m. | OK | Java 8 | TESTS | 10 | 656 | 0 | ||
| 380955398 | udot019 | D | July 1, 2026, 7:43 p.m. | OK | Java 8 | TESTS | 10 | 671 | 0 | ||
| 380898450 | Ared | D | July 1, 2026, 10:50 a.m. | OK | Java 8 | TESTS | 10 | 671 | 0 | ||
| 380871924 | random2347 | D | July 1, 2026, 6:11 a.m. | OK | Java 8 | TESTS | 10 | 687 | 0 | ||
| 380892185 | AishwaryaR | D | July 1, 2026, 9:52 a.m. | OK | Kotlin 1.7 | TESTS | 10 | 687 | 107008000 | ||
| 380854368 | Golovanov399 | D | June 30, 2026, 11:25 p.m. | OK | Kotlin 2.2 | TESTS | 10 | 500 | 23859200 | ||
| 380982537 | 170zhiyixi | D | July 2, 2026, 6:09 a.m. | OK | Node.js | TESTS | 10 | 296 | 67686400 | ||
| 380886309 | GigaChadGreedy | D | July 1, 2026, 9:01 a.m. | OK | PyPy 3 | TESTS | 10 | 468 | 18841600 | ||
| 380948707 | imaginary_faye | D | July 1, 2026, 6:17 p.m. | OK | PyPy 3 | TESTS | 10 | 625 | 20480000 | ||
| 380866398 | reshuu_7 | D | July 1, 2026, 4:58 a.m. | OK | PyPy 3 | TESTS | 10 | 640 | 20275200 | ||
| 380864652 | Navjeet_005 | D | July 1, 2026, 4:31 a.m. | OK | PyPy 3 | TESTS | 10 | 656 | 20684800 | ||
| 380861229 | ShivangB | D | July 1, 2026, 3:31 a.m. | OK | PyPy 3 | TESTS | 10 | 718 | 20889600 | ||
| 380855344 | leduchuy | D | July 1, 2026, 1:17 a.m. | OK | PyPy 3-64 | TESTS | 10 | 109 | 26931200 | ||
| 380857397 | WaterG | D | July 1, 2026, 2:13 a.m. | OK | PyPy 3-64 | TESTS | 10 | 125 | 29388800 | ||
| 380902888 | sashwathjs | D | July 1, 2026, 11:26 a.m. | OK | PyPy 3-64 | TESTS | 10 | 125 | 29696000 | ||
| 380961745 | ICME | D | July 1, 2026, 9:55 p.m. | OK | PyPy 3-64 | TESTS | 10 | 125 | 31948800 | ||
| 380858055 | yi_hang | D | July 1, 2026, 2:27 a.m. | OK | PyPy 3-64 | TESTS | 10 | 125 | 33382400 | ||
| 380859725 | hxu10 | D | July 1, 2026, 3:01 a.m. | OK | PyPy 3-64 | TESTS | 10 | 125 | 41369600 | ||
| 380929910 | mawo78 | D | July 1, 2026, 3:09 p.m. | OK | PyPy 3-64 | TESTS | 10 | 140 | 29388800 | ||
| 380868108 | Sarwesh | D | July 1, 2026, 5:21 a.m. | OK | PyPy 3-64 | TESTS | 10 | 140 | 32768000 | ||
| 380886486 | AnarN0 | D | July 1, 2026, 9:03 a.m. | OK | PyPy 3-64 | TESTS | 10 | 140 | 35328000 | ||
| 380923879 | Amanu2127 | D | July 1, 2026, 2:18 p.m. | OK | PyPy 3-64 | TESTS | 10 | 140 | 39731200 | ||
| 380854454 | lansan69 | D | June 30, 2026, 11:28 p.m. | OK | Python 3 | TESTS | 10 | 156 | 34406400 | ||
| 380843299 | Midhilesh | D | June 30, 2026, 7 p.m. | OK | Python 3 | TESTS | 10 | 171 | 29081600 | ||
| 380843842 | Mirpasha | D | June 30, 2026, 7:07 p.m. | OK | Python 3 | TESTS | 10 | 171 | 31744000 | ||
| 380894560 | vuthoo | D | July 1, 2026, 10:13 a.m. | OK | Python 3 | TESTS | 10 | 171 | 32358400 | ||
| 380898168 | wickedv | D | July 1, 2026, 10:48 a.m. | OK | Python 3 | TESTS | 10 | 171 | 34508800 | ||
| 380864916 | Shrijith | D | July 1, 2026, 4:36 a.m. | OK | Python 3 | TESTS | 10 | 171 | 34611200 | ||
| 380892139 | amanjaiswal__143 | D | July 1, 2026, 9:52 a.m. | OK | Python 3 | TESTS | 10 | 171 | 49152000 | ||
| 380842762 | Midhilesh | D | June 30, 2026, 6:52 p.m. | OK | Python 3 | TESTS | 10 | 187 | 31129600 | ||
| 380942758 | shubh-varshney | D | July 1, 2026, 5:17 p.m. | OK | Python 3 | TESTS | 10 | 203 | 32358400 | ||
| 380942088 | stromss | D | July 1, 2026, 5:10 p.m. | OK | Python 3 | TESTS | 10 | 203 | 34508800 | ||
| 380933778 | ruanxiaoyu | D | July 1, 2026, 3:47 p.m. | OK | Rust 2024 | TESTS | 10 | 46 | 4505600 | ||
| 380940320 | typedef_struct | D | July 1, 2026, 4:52 p.m. | OK | Rust 2024 | TESTS | 10 | 62 | 5324800 |
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