Codeforces Round 1071 (Div. 3)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
2179 Codeforces Round 1071 (Div. 3) FINISHED False 9000 9904523 Dec. 23, 2025, 2:45 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 5719 ) E Blackslex and Girls PROGRAMMING constructive algorithms geometry math

After failing to pick up a girl using De Bruijn sequence of fixed-length bitstrings, Blackslex has turned his attention towards politics. Due to his high charisma, he is now in charge of drawing borders for the (n) voting districts of his country. In Blackslex's country, there are (x) voters for party A and (y) voters for party B. Using his amazing drawing skills, he can allocate voters from any party into any district of his choice. His history with bitstrings has led him to wonder if he can allocate voters such that the winner of each district follows a certain bitstring pattern. To avoid suspicion, he must also allocate at least (p_i) voters into each district. Tell him if it is possible! Formally, you are given a binary string (s) of length (n), an array (p) of length (n), and two integers (x) and (y). You want to determine whether there exist two arrays of nonnegative integers (a) and (b) of length (n) that satisfy the following conditions: (a_1 + a_2 + \dots + a_n = x) (b_1 + b_2 + \dots + b_n = y) For every (1 \leq i \leq n), (a_i + b_i \geq p_i) For every (1 \leq i \leq n): If (s_i = 0) then (a_i > b_i) If (s_i = 1) then (b_i > a_i) If (s_i = 0) then (a_i > b_i) If (s_i = 1) then (b_i > a_i) The first line contains a single integer (t) ((1 \leq t \leq 10^4)) — the number of test cases. The first line of each test case contains three integers (n), (x), and (y) ((1 \leq n \leq 2 \cdot 10^5), (1 \leq x, y \leq 10^9)). The second line contains a binary string (s) of length (n). The third line contains (n) integers (p_1, p_2, \dots, p_n) ((1 \leq p_i \leq 10^9)). The sum of (n) across all test cases does not exceed (2 \cdot 10^5). For each test case, print (case-insensitive) YES if there exist arrays (a, b) satisfying all conditions, or NO otherwise. In the first test case, one of the possibl

Tutorials

Codeforces Round 1071 (Div. 3) Editorial

Submissions

Submission Id
Author(s)
Index
Submitted
Verdict
Language
Test Set
Tests Passed
Time taken (ms)
Memory Consumed (bytes)
Tags
Rating
355005544 raj_7061 E Dec. 25, 2025, 4:29 a.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354999932 heiyuZ E Dec. 25, 2025, 1:52 a.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354994241 Ramos-San E Dec. 24, 2025, 10:03 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354985255 tanka_jahari E Dec. 24, 2025, 7:30 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354979988 priyadei E Dec. 24, 2025, 6:26 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354956968 rohajrohit E Dec. 24, 2025, 3 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354949831 TCS_Bhediya E Dec. 24, 2025, 2:05 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354948525 dlnsy E Dec. 24, 2025, 1:55 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354942819 balajee_kumar E Dec. 24, 2025, 1:15 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354938097 _0612 E Dec. 24, 2025, 12:39 p.m. OK C++17 (GCC 7-32) TESTS 11 62 0
354999407 CaoJinCheng E Dec. 25, 2025, 1:34 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354917503 WAcrazier E Dec. 24, 2025, 9:57 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354916008 smile_xi E Dec. 24, 2025, 9:44 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354915563 roronova E Dec. 24, 2025, 9:41 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354915172 wrongansont2 E Dec. 24, 2025, 9:38 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354885868 MinhPiii E Dec. 24, 2025, 4:35 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354878796 tpsaurus E Dec. 24, 2025, 2:16 a.m. OK C++20 (GCC 13-64) TESTS 11 46 0
354940519 gevak E Dec. 24, 2025, 12:57 p.m. OK C++20 (GCC 13-64) TESTS 11 46 24064000
355009353 KatsuXD E Dec. 25, 2025, 5:34 a.m. OK C++20 (GCC 13-64) TESTS 11 62 0
355004331 010-Nursultan.-I.-2028 E Dec. 25, 2025, 4:01 a.m. OK C++20 (GCC 13-64) TESTS 11 62 0
354957851 czh6666 E Dec. 24, 2025, 3:07 p.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354954036 TLE_Breaker E Dec. 24, 2025, 2:37 p.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354935806 PanDa_HG E Dec. 24, 2025, 12:23 p.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354935098 Rahul_23M E Dec. 24, 2025, 12:18 p.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354932372 7_suyash_7 E Dec. 24, 2025, 11:56 a.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354927585 sahil10415 E Dec. 24, 2025, 11:18 a.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354907850 Elabiad E Dec. 24, 2025, 8:41 a.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354869784 SoGoodPerson E Dec. 23, 2025, 9:25 p.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 0
354883077 _manitbansal.07 E Dec. 24, 2025, 3:48 a.m. OK C++23 (GCC 14-64, msys2) TESTS 11 46 1638400
355011160 ayuanay E Dec. 25, 2025, 5:59 a.m. OK C++23 (GCC 14-64, msys2) TESTS 11 62 0
355000127 Ritwin E Dec. 25, 2025, 1:59 a.m. OK GNU C11 TESTS 11 46 2662400
354874175 zhanzhijiea E Dec. 23, 2025, 11:30 p.m. OK GNU C11 TESTS 11 93 1843200
354999092 Zongb E Dec. 25, 2025, 1:21 a.m. OK GNU C11 TESTS 11 93 2867200
354867026 drested E Dec. 23, 2025, 8:34 p.m. OK Go TESTS 11 140 8192000
354916874 beatinghu E Dec. 24, 2025, 9:51 a.m. OK Java 21 TESTS 11 234 1740800
354917810 Tan_Le_Jie E Dec. 24, 2025, 9:59 a.m. OK Java 21 TESTS 11 234 3993600
354871677 avinash73 E Dec. 23, 2025, 10:09 p.m. OK Java 21 TESTS 11 250 716800
354882926 dzhi E Dec. 24, 2025, 3:46 a.m. OK Java 21 TESTS 11 250 2150400
354974476 NooB__C0der E Dec. 24, 2025, 5:33 p.m. OK Java 21 TESTS 11 250 3993600
354984573 NpHardcore_05 E Dec. 24, 2025, 7:21 p.m. OK Java 21 TESTS 11 265 921600
354871471 avinash73 E Dec. 23, 2025, 10:03 p.m. OK Java 21 TESTS 11 265 1740800
354964858 Pavan__ E Dec. 24, 2025, 4:03 p.m. OK Java 21 TESTS 11 281 4300800
354946614 _MShadow_ E Dec. 24, 2025, 1:41 p.m. OK Java 21 TESTS 11 296 2969600
354931804 NodeMon E Dec. 24, 2025, 11:51 a.m. OK Java 21 TESTS 11 296 3379200
354910890 public-static-void-main E Dec. 24, 2025, 9:05 a.m. OK Java 8 TESTS 11 171 35737600
354992889 vootkuriakshayreddy E Dec. 24, 2025, 9:32 p.m. OK Java 8 TESTS 11 468 0
354995186 madunagu E Dec. 24, 2025, 10:34 p.m. OK Node.js TESTS 11 171 50278400
354888570 chinesedfan E Dec. 24, 2025, 5:16 a.m. OK Node.js TESTS 11 187 29081600
354870648 Bard11 E Dec. 23, 2025, 9:42 p.m. OK PyPy 3 TESTS 11 500 21606400
355011628 liuxx E Dec. 25, 2025, 6:05 a.m. OK PyPy 3 TESTS 11 562 12390400
354882778 jvatsal0709 E Dec. 24, 2025, 3:43 a.m. OK PyPy 3-64 TESTS 11 109 27955200
354962176 Shahir21 E Dec. 24, 2025, 3:42 p.m. OK PyPy 3-64 TESTS 11 125 26419200
354962260 benjaminteng999 E Dec. 24, 2025, 3:42 p.m. OK PyPy 3-64 TESTS 11 140 27545600
354876390 minuki646 E Dec. 24, 2025, 12:59 a.m. OK PyPy 3-64 TESTS 11 140 28057600
354878474 RUTHVIK0811 E Dec. 24, 2025, 2:08 a.m. OK PyPy 3-64 TESTS 11 156 25497600
354944619 fatalerror E Dec. 24, 2025, 1:27 p.m. OK PyPy 3-64 TESTS 11 156 27033600
354961284 gdstw E Dec. 24, 2025, 3:35 p.m. OK PyPy 3-64 TESTS 11 156 27852800
354931228 jagannathpisharody E Dec. 24, 2025, 11:46 a.m. OK PyPy 3-64 TESTS 11 156 28467200
354956364 hsn8086 E Dec. 24, 2025, 2:55 p.m. OK PyPy 3-64 TESTS 11 171 19660800
354923985 falowart044 E Dec. 24, 2025, 10:50 a.m. OK PyPy 3-64 TESTS 11 171 27545600
354989876 Tokuda17 E Dec. 24, 2025, 8:36 p.m. OK Python 3 TESTS 11 109 24678400
354918812 rxzhu E Dec. 24, 2025, 10:07 a.m. OK Python 3 TESTS 11 125 28774400
354920971 rxzhu E Dec. 24, 2025, 10:25 a.m. OK Python 3 TESTS 11 140 28672000
354865998 alexbog141 E Dec. 23, 2025, 8:17 p.m. OK Python 3 TESTS 11 156 24678400
354975908 Harikaran14 E Dec. 24, 2025, 5:47 p.m. OK Python 3 TESTS 11 171 24576000
354936549 zhangmaolin E Dec. 24, 2025, 12:28 p.m. OK Python 3 TESTS 11 171 24780800
354910507 arafatsheikh098 E Dec. 24, 2025, 9:02 a.m. OK Python 3 TESTS 11 171 25292800
354907829 MrMushroom E Dec. 24, 2025, 8:41 a.m. OK Python 3 TESTS 11 171 28467200
354972430 prohorse E Dec. 24, 2025, 5:14 p.m. OK Python 3 TESTS 11 187 24678400
354882350 Nurzhan08 E Dec. 24, 2025, 3:34 a.m. OK Python 3 TESTS 11 187 25497600
354912784 Spheniscine E Dec. 24, 2025, 9:20 a.m. OK Rust 2021 TESTS 11 93 0
354874955 despair E Dec. 24, 2025, 12:02 a.m. OK Rust 2024 TESTS 11 31 0
354921569 j31d0 E Dec. 24, 2025, 10:30 a.m. OK Scala TESTS 11 546 15360000

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