Codeforces Round 1085 (Div. 1 + Div. 2)

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ContestId
Name
Phase
Frozen
Duration (Seconds)
Relative Time
Start Time
2207 Codeforces Round 1085 (Div. 1 + Div. 2) FINISHED False 10800 3425123 March 8, 2026, 2:35 p.m.

Problems

Solved
Index
Name
Type
Tags
Community Tag
Rating
( 13240 ) A 1-1 PROGRAMMING greedy strings

Let (n) be a positive integer. Mario has a binary string(^{\text{∗}}) (s) of length (n). In one move, he can choose any position (i) ((2 \leq i \leq n-1)) such that it's between two 1 's, i.e., (s_{i-1} = s_{i+1} = 1), and then set (s_i) to either 0 or 1 . Mario can perform this operation as many times as he wants (possibly zero). What's the minimum and maximum number of 1 's that can be in the resulting string? (^{\text{∗}})A binary string is a string whose characters are either 0 or 1 . Each test contains multiple test cases. The first line contains the number of test cases (t) ((1 \le t \le 500)). The description of the test cases follows. The first line of each test case contains an integer (n) ((3 \leq n \leq 100)) — the length of the string. The second line of each test case contains a string (s) of length (n) consisting of characters 0 or 1 . For each test case, output two integers — the minimum and maximum number of 1 's in the resulting string after some number of moves. In the first test case, the minimum number of 1 's that can be in the resulting string is (2). This is done by transforming the string as follows: ()\mathtt{1}\underline{\mathtt{1}}\mathtt{1} \to \mathtt{101}.() The maximum number of 1 's that can be in the resulting string is (3), by doing nothing. In the second test case, the minimum number of 1 's that can be in the resulting string is (3). This is done by transforming the string as follows: ()\mathtt{011}\underline{\mathtt{0}}\mathtt{11} \to \mathtt{01}\underline{\mathtt{1}}\mathtt{111} \to \mathtt{0101}\underline{\mathtt{1}}\mathtt{1} \to \mathtt{010101}.() The maximum number of 1 's that can be in the resulting string is (5). This is done by transforming the string as follows: ()\mathtt{011}\underline{\mathtt{0}}\mathtt{11} \to \mathtt{011111}.()

Tutorials

Codeforces Round 1085 (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
365920227 Mostafafied A March 8, 2026, 9:26 p.m. OK C# 10 TESTS 4 46 409600
365919653 Mostafafied A March 8, 2026, 9:15 p.m. OK C# 10 TESTS 4 46 512000
365881197 Ashborn24 A March 8, 2026, 3:43 p.m. OK C# 13 TESTS 4 78 1433600
365943386 okbhargab A March 9, 2026, 6:03 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365943167 Zzz_yu A March 9, 2026, 6 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365940568 zengxuanran A March 9, 2026, 5:24 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365938603 kazialim12 A March 9, 2026, 4:51 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365937414 kirti123x A March 9, 2026, 4:27 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365936344 Adiiiiiii A March 9, 2026, 4:07 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365936301 hanoi10khanh_pn A March 9, 2026, 4:06 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365936124 Aura-Reflected A March 9, 2026, 4:02 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365934784 Decimator069 A March 9, 2026, 3:34 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365933971 billy22 A March 9, 2026, 3:18 a.m. OK C++17 (GCC 7-32) TESTS 4 15 0
365910950 Tran_Doan_Xuan_Thanh A March 8, 2026, 7:21 p.m. OK C++20 (GCC 13-64) TESTS 4 0 0
365940798 zhaojunkai A March 9, 2026, 5:28 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365932121 shreyansh123h A March 9, 2026, 2:35 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365929440 14kxr A March 9, 2026, 1:16 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365928035 KartikMalik_1729 A March 9, 2026, 12:32 a.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365923616 Aurora05 A March 8, 2026, 10:33 p.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365920439 untouchable A March 8, 2026, 9:29 p.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365919453 CrJayden07 A March 8, 2026, 9:12 p.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365915303 vaibhav_jpd A March 8, 2026, 8:15 p.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365911979 Yash_op489 A March 8, 2026, 7:34 p.m. OK C++20 (GCC 13-64) TESTS 4 15 0
365942556 hosizora A March 9, 2026, 5:53 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365941818 Nahin.M A March 9, 2026, 5:42 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365941648 MANTHANN A March 9, 2026, 5:40 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365941516 rahul6311 A March 9, 2026, 5:38 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365940814 PersonalFortune A March 9, 2026, 5:28 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365940268 WoW_BBQ A March 9, 2026, 5:20 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365939959 limx A March 9, 2026, 5:15 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365939870 Bongu_Karthik A March 9, 2026, 5:14 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365938426 Sputnik_1 A March 9, 2026, 4:47 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365936486 Deagon A March 9, 2026, 4:10 a.m. OK C++23 (GCC 14-64, msys2) TESTS 4 15 0
365878626 sairoshinimacharla A March 8, 2026, 3:31 p.m. OK GNU C11 TESTS 4 0 204800
365920255 SAZID_X_MMA A March 8, 2026, 9:26 p.m. OK GNU C11 TESTS 4 15 0
365892107 AaronPe A March 8, 2026, 4:38 p.m. OK GNU C11 TESTS 4 15 0
365890396 santhosh_kumar_05 A March 8, 2026, 4:29 p.m. OK GNU C11 TESTS 4 15 0
365888943 coder_seasoned A March 8, 2026, 4:21 p.m. OK GNU C11 TESTS 4 15 0
365887773 Anshu_Negi17 A March 8, 2026, 4:15 p.m. OK GNU C11 TESTS 4 15 0
365885163 DaeSu A March 8, 2026, 4:02 p.m. OK GNU C11 TESTS 4 15 0
365882593 llx666 A March 8, 2026, 3:50 p.m. OK GNU C11 TESTS 4 15 0
365881443 devg.14052007 A March 8, 2026, 3:44 p.m. OK GNU C11 TESTS 4 15 0
365881294 rayhan_65 A March 8, 2026, 3:43 p.m. OK GNU C11 TESTS 4 15 0
365899726 theeleven A March 8, 2026, 5:22 p.m. OK Java 21 TESTS 4 171 716800
365937148 Avi1921 A March 9, 2026, 4:22 a.m. OK Java 21 TESTS 4 171 1024000
365934283 Sanat0412 A March 9, 2026, 3:24 a.m. OK Java 21 TESTS 4 187 0
365899720 manmohan0singh0 A March 8, 2026, 5:22 p.m. OK Java 21 TESTS 4 187 102400
365931171 Ningzhuo A March 9, 2026, 2:10 a.m. OK Java 21 TESTS 4 187 512000
365905269 sarachoudhary A March 8, 2026, 6:12 p.m. OK Java 21 TESTS 4 187 716800
365905531 keshav_.agg A March 8, 2026, 6:14 p.m. OK Java 21 TESTS 4 187 819200
365904838 Ayush_Chauhan025 A March 8, 2026, 6:07 p.m. OK Java 21 TESTS 4 187 819200
365915706 YAEL345YOL A March 8, 2026, 8:20 p.m. OK Java 21 TESTS 4 187 1228800
365879533 rg7633023155 A March 8, 2026, 3:35 p.m. OK Java 21 TESTS 4 187 1945600
365916286 BINAYAK_HAZRA A March 8, 2026, 8:28 p.m. OK Java 8 TESTS 4 78 0
365915530 CodeLover2007 A March 8, 2026, 8:18 p.m. OK Java 8 TESTS 4 78 0
365939419 abhishek1445 A March 9, 2026, 5:05 a.m. OK Java 8 TESTS 4 125 0
365917999 boyayun A March 8, 2026, 8:50 p.m. OK Java 8 TESTS 4 125 0
365890990 AyushmanYadav A March 8, 2026, 4:32 p.m. OK Java 8 TESTS 4 140 0
365884188 k_manisha25 A March 8, 2026, 3:57 p.m. OK Java 8 TESTS 4 140 0
365879723 malchalamniki A March 8, 2026, 3:36 p.m. OK Java 8 TESTS 4 140 0
365889378 SavriJoshi A March 8, 2026, 4:23 p.m. OK Java 8 TESTS 4 156 0
365882285 A.Zainhom A March 8, 2026, 3:48 p.m. OK Java 8 TESTS 4 156 0
365880921 Rithika_Ceekonda A March 8, 2026, 3:42 p.m. OK Java 8 TESTS 4 171 0
365926171 yuisgame A March 8, 2026, 11:39 p.m. OK Kotlin 1.9 TESTS 4 93 0
365882562 nullbrain_ A March 8, 2026, 3:49 p.m. OK Kotlin 2.2 TESTS 4 109 23756800
365894664 wamachine_ A March 8, 2026, 4:53 p.m. OK PHP TESTS 4 46 102400
365905472 PalizU A March 8, 2026, 6:13 p.m. OK PyPy 3 TESTS 4 93 2355200
365879225 Yegorbear A March 8, 2026, 3:34 p.m. OK PyPy 3 TESTS 4 125 5427200
365884578 vladmed2 A March 8, 2026, 3:59 p.m. OK PyPy 3 TESTS 4 140 4915200
365927836 surajchip2 A March 9, 2026, 12:26 a.m. OK PyPy 3 TESTS 4 140 5734400
365910451 rabeysin A March 8, 2026, 7:15 p.m. OK PyPy 3 TESTS 4 171 5120000
365896959 Jyotier A March 8, 2026, 5:06 p.m. OK PyPy 3 TESTS 4 218 6348800
365937215 skuru A March 9, 2026, 4:23 a.m. OK PyPy 3-64 TESTS 4 46 1740800
365884046 yrtillw A March 8, 2026, 3:57 p.m. OK PyPy 3-64 TESTS 4 46 2150400
365940496 Pilgrim1043 A March 9, 2026, 5:23 a.m. OK PyPy 3-64 TESTS 4 62 2252800
365899028 narendar_92 A March 8, 2026, 5:18 p.m. OK PyPy 3-64 TESTS 4 62 2252800
365879111 Nkotanyi A March 8, 2026, 3:33 p.m. OK PyPy 3-64 TESTS 4 62 2252800
365930657 kamio-misuzu A March 9, 2026, 1:54 a.m. OK PyPy 3-64 TESTS 4 62 2355200
365895213 PseudoSol A March 8, 2026, 4:56 p.m. OK PyPy 3-64 TESTS 4 62 2355200
365883167 chunjaemin A March 8, 2026, 3:52 p.m. OK PyPy 3-64 TESTS 4 62 2457600
365938625 wybpku A March 9, 2026, 4:51 a.m. OK PyPy 3-64 TESTS 4 78 2150400
365895405 humza_choudry A March 8, 2026, 4:57 p.m. OK PyPy 3-64 TESTS 4 78 2150400
365884767 Monish2000 A March 8, 2026, 4 p.m. OK Python 3 TESTS 4 31 0
365880703 alok_chandra01 A March 8, 2026, 3:41 p.m. OK Python 3 TESTS 4 31 307200
365908056 Toka_Nani A March 8, 2026, 6:43 p.m. OK Python 3 TESTS 4 46 0
365900494 gomunkul A March 8, 2026, 5:26 p.m. OK Python 3 TESTS 4 46 0
365889337 vishruthalwandi A March 8, 2026, 4:23 p.m. OK Python 3 TESTS 4 46 0
365887776 ng169_ A March 8, 2026, 4:15 p.m. OK Python 3 TESTS 4 46 0
365883797 qweoqweo A March 8, 2026, 3:55 p.m. OK Python 3 TESTS 4 46 0
365881764 professor17 A March 8, 2026, 3:46 p.m. OK Python 3 TESTS 4 46 0
365880969 DDD12643 A March 8, 2026, 3:42 p.m. OK Python 3 TESTS 4 46 0
365941058 Thecoolgrape A March 9, 2026, 5:31 a.m. OK Python 3 TESTS 4 46 102400
365884331 hachiko2026 A March 8, 2026, 3:58 p.m. OK Ruby 3 TESTS 4 171 409600
365883420 Darknef A March 8, 2026, 3:54 p.m. OK Rust 2024 TESTS 4 31 0
365882912 CoHHa9_MyXa A March 8, 2026, 3:51 p.m. OK Rust 2024 TESTS 4 31 0

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