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972 Tricky and Clever Password binary search constructive algorithms data structures greedy hashing strings Statement E Codeforces Beta Round 30 (Codeforces format) {30} PROGRAMMING Codeforces Beta Round #30. Tutorial for problem A 2700
578 Need For Brake binary search greedy sortings Statement B Codeforces Beta Round 66 {73} PROGRAMMING Codeforces Beta Round #66 editorial: Problems D, E, F 2000
5563 Dress'em in Vests! binary search brute force greedy two pointers Statement A VK Cup 2012 Round 1 {161} PROGRAMMING VK Cup 2012 Round 1: editorial 1300
20150 LLPS binary search bitmasks brute force greedy implementation strings Statement A Codeforces Round 127 (Div. 2) {202} PROGRAMMING 900
2354 Olympiad binary search greedy sortings two pointers Statement D Codeforces Round 137 (Div. 2) {222} PROGRAMMING Разбор задач Codeforces Round #137 (Div. 2) 1800
3421 Well-known Numbers binary search greedy number theory Statement B Codeforces Round 139 (Div. 2) {225} PROGRAMMING 1600
551 Sweets for Everyone! binary search greedy implementation Statement D Codeforces Round 152 (Div. 2) {248} PROGRAMMING Разбор задач Codeforces Round #152 2400
10880 k-Multiple Free Set binary search greedy sortings Statement A Codeforces Round 168 (Div. 1) {274} PROGRAMMING Codeforces Round #168 Editorial 1600
5272 Quiz binary search greedy math matrices number theory Statement C Codeforces Round 196 (Div. 2) {337} PROGRAMMING Codeforces Round #196 — Problems Analysis 1700
3241 Read Time binary search greedy two pointers Statement C Codeforces Round 200 (Div. 1) {343} PROGRAMMING Codeforces Round #200 Tutorial 2100
15900 Counting Kangaroos is Fun binary search greedy sortings two pointers Statement A Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 1700
2587 Preparing for the Contest binary search data structures greedy sortings Statement B Codeforces Round 222 (Div. 1) {377} PROGRAMMING Codeforces Round #222 — Problem Analysis 2100
664 Maze 1D binary search greedy implementation Statement E Codeforces Round 237 (Div. 2) {404} PROGRAMMING Codeforces Round #237 (Div. 2) Editorial 2700
780 Mashmokh and Water Tanks binary search data structures greedy trees two pointers Statement D Codeforces Round 240 (Div. 1) {414} PROGRAMMING Codeforces Round #240 Editorial 2300
6736 Mashmokh and Tokens binary search greedy implementation math Statement B Codeforces Round 240 (Div. 2) {415} PROGRAMMING Codeforces Round #240 Editorial 1500
8828 Booking System binary search dp greedy implementation Statement C Codeforces Round 241 (Div. 2) {416} PROGRAMMING Codeforces Round #241 — editorial 1600
8526 Megacity binary search greedy implementation sortings Statement B Codeforces Round 242 (Div. 2) {424} PROGRAMMING Codeforces Round #242 (Div. 2) Editorial 1200
3757 MUH and House of Cards binary search brute force greedy math Statement C Codeforces Round 269 (Div. 2) {471} PROGRAMMING Codeforces Round #269 Editorial 1700
5037 Long Jumps binary search greedy implementation Statement D Codeforces Round 274 (Div. 2) {479} PROGRAMMING Codeforces Round #274: editorial 1800
1726 Restoring Increasing Sequence binary search brute force greedy implementation Statement E Codeforces Round 279 (Div. 2) {490} PROGRAMMING Codeforces Round #279 (Div. 2) Editorial 2100
680 Berland Miners binary search data structures dfs and similar greedy trees Statement A VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) {533} PROGRAMMING 3000
4010 Tavas and Karafs binary search greedy math Statement C Codeforces Round 299 (Div. 2) {535} PROGRAMMING Codeforces Round #299 Editorial 1900
6172 Tourist's Notes binary search brute force greedy implementation math Statement C Codeforces Round 300 {538} PROGRAMMING Codeforces Round #300 Editorial (+challenges) 1600
2297 Kyoya and Permutation binary search combinatorics constructive algorithms greedy implementation math Statement B Codeforces Round 309 (Div. 1) {553} PROGRAMMING Codeforces Round #309 Editorial 2200
5321 One-Dimensional Battle Ships binary search data structures greedy sortings Statement D Codeforces Round #Pi (Div. 2) {567} PROGRAMMING Editorial Codeforces Round #Pi 1800
3252 Gadgets for dollars and pounds binary search greedy two pointers Statement D Educational Codeforces Round 3 {609} PROGRAMMING 2000
2498 Skills binary search brute force dp greedy sortings two pointers Statement B Codeforces Round 339 (Div. 1) {613} PROGRAMMING Tutorial 2200
1039 Preorder Test binary search dfs and similar dp graphs greedy trees Statement D 8VC Venture Cup 2016 - Final Round {627} PROGRAMMING 8VC Venture Cup 2016 — Final Round Editorial 2600
184 Автобус binary search data structures greedy sortings Statement E Технокубок 2016 - Отборочный Раунд 2 {649} PROGRAMMING 2500.0 2100
3377 Generating Sets binary search data structures dfs and similar greedy strings trees Statement D Intel Code Challenge Elimination Round (Div. 1 + Div. 2, combined) {722} PROGRAMMING Tutorial 1900
4204 Road to Cinema binary search greedy sortings Statement C Technocup 2017 - Elimination Round 2 {729} PROGRAMMING 1700
10238 Sanatorium binary search constructive algorithms greedy implementation math Statement C Codeforces Round 377 (Div. 2) {732} PROGRAMMING Codeforces Round #377 (Div. 2) Editorial 1300
6007 Exams binary search greedy sortings Statement D Codeforces Round 377 (Div. 2) {732} PROGRAMMING Codeforces Round #377 (Div. 2) Editorial 1700
5740 Anton and Making Potions binary search dp greedy two pointers Statement C Codeforces Round 379 (Div. 2) {734} PROGRAMMING Tutorial of Codeforces Round #379 (Div. 2) 1600
1678 Santa Claus and Tangerines binary search data structures greedy two pointers Statement E Technocup 2017 - Elimination Round 3 {748} PROGRAMMING Codeforces Round 389 (Div.2) Editorial 2000
7129 New Year and Rating binary search greedy math Statement C Good Bye 2016 {750} PROGRAMMING Good Bye 2016 — hints and codes 1600
2737 Fedor and coupons binary search data structures greedy sortings Statement D Codeforces Round 390 (Div. 2) {754} PROGRAMMING 2000
13076 PolandBall and Game binary search data structures games greedy sortings strings Statement B 8VC Venture Cup 2017 - Elimination Round {755} PROGRAMMING 8VC Venture Cup 2017 — Elimination Round [Editorial] 1200
4231 Dasha and Very Difficult Problem binary search brute force constructive algorithms greedy sortings Statement D Codeforces Round 394 (Div. 2) {761} PROGRAMMING Codeforces Round #394 (Div. 2) [Editorial] 1700
2448 Cartons of milk binary search data structures greedy sortings two pointers Statement D Codeforces Round 398 (Div. 2) {767} PROGRAMMING Codeforces Round #398 (Div. 2) Editorial 2000
1020 Prairie Partition binary search constructive algorithms greedy math Statement C VK Cup 2017 - Round 3 {773} PROGRAMMING VK Cup 2017 Round 3 + Codeforces Round #412 -- Tutorial 2300
6912 Alyona and Spreadsheet binary search data structures dp greedy implementation two pointers Statement C Codeforces Round 401 (Div. 2) {777} PROGRAMMING Problem analysis of Codeforces Round #401 (Div. 2) 1600
5277 Cloud of Hashtags binary search greedy implementation strings Statement D Codeforces Round 401 (Div. 2) {777} PROGRAMMING Problem analysis of Codeforces Round #401 (Div. 2) 1800
13113 String Game binary search greedy strings Statement A Codeforces Round 402 (Div. 1) {778} PROGRAMMING Codeforces Round #402, Editorial 1600
2254 Selling Souvenirs binary search dp greedy ternary search Statement E Educational Codeforces Round 21 {808} PROGRAMMING 52010 2300
4975 Hacker, pack your bags! binary search greedy implementation sortings Statement C Codeforces Round 422 (Div. 2) {822} PROGRAMMING Codeforces Round #422 (Div. 2) Editorial 1600
3840 Suitable Replacement binary search greedy implementation Statement D Educational Codeforces Round 25 {825} PROGRAMMING Educational Codeforces Round 25 - Editorial 1600
8401 Office Keys binary search brute force dp greedy sortings Statement A Codeforces Round 424 (Div. 1, rated, based on VK Cup Finals) {830} PROGRAMMING Codeforces Round #424 Editorial 1900
2338 Ithea Plays With Chtholly binary search constructive algorithms games greedy interactive Statement B Codeforces Round 449 (Div. 1) {896} PROGRAMMING Codeforces Round #449 Editorial 2000
5176 Too Easy Problems binary search brute force data structures greedy sortings Statement D Hello 2018 {913} PROGRAMMING Tutorial 1800
5646 Three-level Laser binary search greedy two pointers Statement B VK Cup 2018 - Round 2 {924} PROGRAMMING VK Cup 2018 Round 2 and Codeforces Round #472 Editorial 1600
3564 Maximize! binary search greedy ternary search two pointers Statement E Codeforces Round 464 (Div. 2) {939} PROGRAMMING Analysis of Codeforces Round #464 1900
921 Curfew binary search brute force greedy sortings Statement D Codeforces Round 469 (Div. 1) {949} PROGRAMMING 58291 2400
2151 Water Taps binary search greedy sortings Statement E Educational Codeforces Round 40 (Rated for Div. 2) {954} PROGRAMMING 58519 2000
2455 Castle Defense binary search data structures greedy two pointers Statement G Educational Codeforces Round 40 (Rated for Div. 2) {954} PROGRAMMING 58519 2100
1210 Guard Duty (medium) binary search dp greedy sortings Statement E2 Helvetic Coding Contest 2018 online mirror (teams allowed, unrated) {958} PROGRAMMING helvetic-coding-contest-2018-editorial.pdf 2300
3366 Single-use Stones binary search flows greedy two pointers Statement D Codeforces Round 476 (Div. 2) [Thanks, Telegram!] {965} PROGRAMMING Analysis of Codeforces Round #476 (Div. 2) [Thanks, Telegram!] 1900
2267 Kuro and GCD and XOR and SUM binary search bitmasks brute force data structures dp dsu greedy math number theory strings trees Statement D Codeforces Round 482 (Div. 2) {979} PROGRAMMING 1750.0 Codeforces Round #482 (Div. 2) Editorial 2200
4307 Pencils and Boxes binary search data structures dp greedy two pointers Statement E Educational Codeforces Round 44 (Rated for Div. 2) {985} PROGRAMMING Educational Codeforces Round 44 Editorial 2000
1307 Sonya and Ice Cream binary search data structures dp greedy shortest paths trees Statement E Codeforces Round 495 (Div. 2) {1004} PROGRAMMING 60443 2400
10354 Coffee Break binary search data structures greedy two pointers Statement C Codeforces Round 509 (Div. 2) {1041} PROGRAMMING Codeforces Round #509 (Div. 2) Editorial 1500
1666 Split the Tree binary search data structures dp greedy trees Statement E Codeforces Round 514 (Div. 2) {1059} PROGRAMMING Codeforces Round #514 (Div. 2) Editorial 2400
2147 Company binary search data structures dfs and similar greedy trees Statement E Codeforces Round 520 (Div. 2) {1062} PROGRAMMING Tutorial 2300
2848 Missing Numbers binary search constructive algorithms greedy math number theory Statement E Avito Cool Challenge 2018 {1081} PROGRAMMING 63888 1900
1120 New Year and the Acquaintance Estimation binary search data structures graphs greedy implementation math sortings Statement E Good Bye 2018 {1091} PROGRAMMING Editorial 2400
1185 Construct a tree binary search constructive algorithms dfs and similar graphs greedy trees Statement C Codeforces Round 530 (Div. 1) {1098} PROGRAMMING 64331 2300
17640 Alyona and a Narrow Fridge binary search flows greedy sortings Statement B Codeforces Global Round 2 {1119} PROGRAMMING Codeforces Global Round 2 Editorial 1300
15804 Birthday binary search greedy sortings Statement C Codeforces Round 541 (Div. 2) {1131} PROGRAMMING Codeforces Round #541 Editorial 1200
22684 Sushi for Two binary search greedy implementation Statement A Codeforces Round 545 (Div. 2) {1138} PROGRAMMING Codeforces Round #545 – Editorial 900
2563 Privatization of Roads in Treeland binary search constructive algorithms dfs and similar graphs greedy trees Statement G Codeforces Round 547 (Div. 3) {1141} PROGRAMMING 66062 2500
5666 Serval and Rooted Tree binary search dfs and similar dp greedy trees Statement D Codeforces Round 551 (Div. 2) {1153} PROGRAMMING Editorial 1800
6858 Match Points binary search greedy sortings ternary search two pointers Statement C Educational Codeforces Round 64 (Rated for Div. 2) {1156} PROGRAMMING 66827 2000
8538 The Party and Sweets binary search constructive algorithms greedy implementation math sortings two pointers Statement A Codeforces Round 559 (Div. 1) {1158} PROGRAMMING 66993 1500
2518 Microtransactions (hard version) binary search greedy implementation Statement F2 Codeforces Round 560 (Div. 3) {1165} PROGRAMMING Codeforces Round #560 (Div. 3) Editorial 2400
2313 Cute Sequences binary search brute force greedy math Statement D Codeforces Round 561 (Div. 2) {1166} PROGRAMMING Codeforces Round #561 (Div. 2) Editorial 2100
2548 Serge and Dining Room binary search data structures graph matchings greedy implementation math trees Statement C Codeforces Round 569 (Div. 1) {1179} PROGRAMMING Editorial of Round #569 2400
35869 Maximum Median binary search greedy math sortings Statement C Codeforces Round 577 (Div. 2) {1201} PROGRAMMING Codeforces Round #577 (Div 2) Editorial 1400
2569 Treasure Hunting binary search dp greedy implementation Statement D Codeforces Round 577 (Div. 2) {1201} PROGRAMMING Codeforces Round #577 (Div 2) Editorial 2000
8253 Remove the Substring (hard version) binary search greedy implementation two pointers Statement D2 Codeforces Round 579 (Div. 3) {1203} PROGRAMMING Codeforces Round #579 (Div. 3) Editorial 1800
5620 Restore Permutation binary search data structures greedy implementation Statement D Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2) {1208} PROGRAMMING 69357 1900
254 Teams *special binary search greedy math Statement D Kotlin Heroes: Episode 2 {1211} PROGRAMMING Kotlin Heroes: Episode 2 Editorial 2200
4568 Balanced Removals (Harder) binary search constructive algorithms divide and conquer greedy implementation sortings Statement C2 Codeforces Global Round 5 {1237} PROGRAMMING T 1900
6829 Minimizing Difference binary search constructive algorithms greedy sortings ternary search two pointers Statement E Codeforces Round 592 (Div. 2) {1244} PROGRAMMING Codeforces Round #592 (Div. 2) Tutorial 2000
13654 Good Numbers (hard version) binary search greedy math meet-in-the-middle Statement C2 Codeforces Round 595 (Div. 3) {1249} PROGRAMMING Codeforces Round #595 (Div. 3) Editorial 1500
4725 Divide The Students binary search greedy math Statement L 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} PROGRAMMING 1700
240 Show Must Go On binary search brute force greedy shortest paths Statement I 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} PROGRAMMING 3100
6691 Salary Changing binary search greedy sortings Statement D Educational Codeforces Round 75 (Rated for Div. 2) {1251} PROGRAMMING 70860 1800
8266 Yet Another Monster Killing Problem binary search data structures dp greedy sortings two pointers Statement D Educational Codeforces Round 76 (Rated for Div. 2) {1257} PROGRAMMING Educational Codeforces Round 76 Editorial 1700
4284 A Game with Traps binary search dp greedy sortings Statement D Educational Codeforces Round 77 (Rated for Div. 2) {1260} PROGRAMMING Educational Codeforces Round 77 Editorial 1900
274 Bonus Distribution *special binary search greedy sortings Statement D Kotlin Heroes: Episode 3 {1297} PROGRAMMING Kotlin Heroes: Episode 3 Editorial
15167 Motarack's Birthday binary search greedy ternary search Statement B Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 1000.0 Codeforces Round #619 (Div. 2) Editorial 1500
9970 Ayoub's function binary search combinatorics greedy math strings Statement C Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 1250.0 Codeforces Round #619 (Div. 2) Editorial 1700
7475 Cow and Fields binary search data structures dfs and similar graphs greedy shortest paths sortings Statement D Codeforces Round 621 (Div. 1 + Div. 2) {1307} PROGRAMMING 2000.0 Codeforces Round #621 (Div. 1 + Div. 2) Editorial 1900
1473 Cow and Treats binary search combinatorics dp greedy implementation math Statement E Codeforces Round 621 (Div. 1 + Div. 2) {1307} PROGRAMMING 2500.0 Codeforces Round #621 (Div. 1 + Div. 2) Editorial 2400
7067 Different Rules binary search constructive algorithms greedy implementation math Statement B Codeforces Round 622 (Div. 2) {1313} PROGRAMMING 1000.0 Editorial 1700
9712 Homecoming binary search dp greedy strings Statement B Codeforces Round 623 (Div. 2, based on VK Cup 2019-2020 - Elimination Round, Engine) {1315} PROGRAMMING 1000.0 VK Cup 2019-2020 - Elimination Round (Engine) and Codeforces Round #623 1300
30891 Frog Jumps binary search data structures greedy implementation Statement C Codeforces Round 627 (Div. 3) {1324} PROGRAMMING Codeforces Round #627 (Div. 3) Editorial
39829 Two Teams Composing binary search greedy implementation sortings Statement C Codeforces Round 634 (Div. 3) {1335} PROGRAMMING 75993 1100
12335 Xenia and Colorful Gems binary search greedy math sortings two pointers Statement B Codeforces Round 635 (Div. 1) {1336} PROGRAMMING 750.0 Codeforces Round #635 Editorial 1800
6395 Multiple Testcases binary search constructive algorithms data structures greedy sortings two pointers Statement D Educational Codeforces Round 86 (Rated for Div. 2) {1342} PROGRAMMING 76633 1900
1346 Résumé Review binary search greedy math Statement D Codeforces Round 639 (Div. 1) {1344} PROGRAMMING 1750.0 Codeforces Round #639 Editorial 2700
9400 Phoenix and Science binary search bitmasks constructive algorithms greedy math Statement D Codeforces Round 638 (Div. 2) {1348} PROGRAMMING 2000.0 Codeforces Round #638 (Div. 2) Editorial 1900
6006 Restorer Distance binary search greedy math sortings ternary search Statement E Codeforces Round 643 (Div. 2) {1355} PROGRAMMING 2000.0 Codeforces Round #643 (Div. 2) Editorial 2100
8813 The Best Vacation binary search brute force greedy implementation two pointers Statement D Codeforces Round 645 (Div. 2) {1358} PROGRAMMING 1500.0 Codeforces Round #645 (Div. 2) Editorial 1900
563 Tasty Cookie binary search constructive algorithms greedy implementation Statement F Codeforces Round 645 (Div. 2) {1358} PROGRAMMING 2500.0 Codeforces Round #645 (Div. 2) Editorial 2700
4685 Two Arrays binary search brute force combinatorics dp greedy implementation two pointers Statement E Educational Codeforces Round 89 (Rated for Div. 2) {1366} PROGRAMMING Educational Codeforces Round 89 Editorial
33358 Shovels and Swords binary search greedy math Statement A Educational Codeforces Round 89 (Rated for Div. 2) {1366} PROGRAMMING Educational Codeforces Round 89 Editorial
5936 Necklace Assembly binary search brute force dp greedy number theory Statement E Codeforces Round 650 (Div. 3) {1367} PROGRAMMING Codeforces Round #650 (Div. 3) Editorial
2020 Flying Sort (Hard Version) binary search dp greedy two pointers Statement F2 Codeforces Round 650 (Div. 3) {1367} PROGRAMMING Codeforces Round #650 (Div. 3) Editorial
5289 Binary Subsequence Rotation binary search data structures dp greedy implementation Statement E Codeforces Round 651 (Div. 2) {1370} PROGRAMMING 2500.0 Editorial — Codeforces Round #651
11233 Odd-Even Subsequence binary search dp greedy implementation sortings Statement D Codeforces Round 651 (Div. 2) {1370} PROGRAMMING 2000.0 Editorial — Codeforces Round #651
19537 Pluses and Minuses binary search dp greedy implementation math Statement C Educational Codeforces Round 90 (Rated for Div. 2) {1373} PROGRAMMING Educational Codeforces Round 90 Editorial
1137 Reading Books (hard version) binary search data structures greedy sortings ternary search two pointers Statement E2 Codeforces Round 653 (Div. 3) {1374} PROGRAMMING 79517
6184 Choosing flowers binary search data structures greedy math sortings two pointers Statement C Codeforces Round 657 (Div. 2) {1379} PROGRAMMING 1250.0 Codeforces Round #657 Editorial 2000
4593 Segment Intersections binary search brute force greedy implementation math Statement D Educational Codeforces Round 92 (Rated for Div. 2) {1389} PROGRAMMING 80809
2681 Omkar and Landslide binary search constructive algorithms greedy math Statement F Codeforces Global Round 10 {1392} PROGRAMMING 2500.0 Codeforces Global Round 10 — Editorial
11105 Pinkie Pie Eats Patty-cakes binary search constructive algorithms data structures greedy math sortings Statement C Codeforces Round 662 (Div. 2) {1393} PROGRAMMING 1500.0 Codeforces Round #662 Editorial
2641 Two Types of Spells binary search data structures greedy implementation math sortings Statement E Educational Codeforces Round 93 (Rated for Div. 2) {1398} PROGRAMMING Educational Codeforces Round 93 Editorial
2585 Weights Division (hard version) binary search data structures dfs and similar greedy trees two pointers Statement E2 Codeforces Round 661 (Div. 3) {1399} PROGRAMMING Codeforces Round #661 (Div. 3) Editorial
11758 RPG Protagonist binary search brute force greedy math Statement B Educational Codeforces Round 94 (Rated for Div. 2) {1400} PROGRAMMING 81942
3872 Three Sequences binary search data structures greedy math Statement D Codeforces Round 670 (Div. 2) {1406} PROGRAMMING 2000.0 Codeforces Round #670 (Div. 2) Editorial
17656 Sage's Birthday (hard version) binary search constructive algorithms greedy implementation sortings two pointers Statement D2 Codeforces Round 671 (Div. 2) {1419} PROGRAMMING 1000.0 Codeforces Round #671 Editorial
26670 Sage's Birthday (easy version) binary search greedy implementation sortings Statement D1 Codeforces Round 671 (Div. 2) {1419} PROGRAMMING 750.0 Codeforces Round #671 Editorial
4367 Carrots for Rabbits binary search data structures greedy math Statement E Codeforces Raif Round 1 (Div. 1 + Div. 2) {1428} PROGRAMMING 1750.0 Codeforces Raif Round 1 Editorial
6571 Bandit in a City binary search dfs and similar greedy trees Statement D Codeforces Round 678 (Div. 2) {1436} PROGRAMMING 2000.0 Codeforces Round #678 (Div. 2). Editorial
17067 The Delivery Dilemma binary search greedy sortings Statement C Codeforces Round 681 (Div. 2, based on VK Cup 2019-2020 - Final) {1443} PROGRAMMING 1500.0 VK Cup 2019-2020 -- Engine Editorial
15585 Toy Blocks binary search greedy math sortings Statement B Educational Codeforces Round 98 (Rated for Div. 2) {1452} PROGRAMMING 84847
2259 Dog Snacks binary search dfs and similar dp greedy trees Statement E Codeforces Round 688 (Div. 2) {1453} PROGRAMMING 2500.0 Codeforces Round #688 (Div. 2) Editorial
4956 Array Partition binary search brute force data structures greedy two pointers Statement F Codeforces Round 686 (Div. 3) {1454} PROGRAMMING Codeforces Round #686 (Div. 3) Editorial
8822 The Treasure of The Segments binary search data structures greedy sortings Statement F Codeforces Round 690 (Div. 3) {1462} PROGRAMMING Codeforces Round #690 (Div. 3) Editorial
42853 Different Divisors binary search constructive algorithms greedy math number theory Statement B Codeforces Round 696 (Div. 2) {1474} PROGRAMMING 1000.0 Codeforces Round #696 Editorial
11353 Cleaning the Phone binary search dp greedy sortings two pointers Statement D Codeforces Round 697 (Div. 3) {1475} PROGRAMMING Codeforces Round #697 (Div. 3) Editorial
21828 Inflation binary search brute force greedy math Statement B Educational Codeforces Round 103 (Rated for Div. 2) {1476} PROGRAMMING 87356
45811 K-divisible Sum binary search constructive algorithms greedy math Statement A Educational Codeforces Round 103 (Rated for Div. 2) {1476} PROGRAMMING 87356
18687 Equalize the Array binary search data structures greedy math sortings Statement F Codeforces Round 702 (Div. 3) {1490} PROGRAMMING Codeforces Round #702 (Div. 3) Editorial
5006 K-beautiful Strings binary search brute force greedy implementation strings Statement C Codeforces Round 705 (Div. 2) {1493} PROGRAMMING 1750.0 Codeforces Round #705 (Div.2) Editorial
15465 Berland Crossword binary search bitmasks brute force greedy implementation Statement B Educational Codeforces Round 105 (Rated for Div. 2) {1494} PROGRAMMING Educational Codeforces Round 105 Editorial
3921 Travelling Salesman Problem binary search data structures dp greedy shortest paths sortings Statement C Codeforces Round 712 (Div. 1) {1503} PROGRAMMING 1250.0 T 2200
6891 Education binary search greedy implementation math Statement F Codeforces Round 713 (Div. 3) {1512} PROGRAMMING Codeforces Round #713 (Div. 3) Editorial
5088 Cut and Stick binary search data structures greedy probabilities sortings Statement D Codeforces Round 716 (Div. 2) {1514} PROGRAMMING 2000.0 Codeforces round #716 editorial
768 Nastia and a Beautiful Matrix binary search constructive algorithms greedy math Statement E Codeforces Round 720 (Div. 2) {1521} PROGRAMMING 2750.0 90477
15710 Pursuit binary search greedy sortings Statement C Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine)) {1530} PROGRAMMING 1000.0 Codeforces Round #733 Editorial (all problems)
3149 Gold Transfer binary search data structures greedy interactive trees Statement E Educational Codeforces Round 110 (Rated for Div. 2) {1535} PROGRAMMING 91481
16977 Erase and Extend (Easy Version) binary search brute force dp greedy hashing string suffix structures strings Statement E1 Codeforces Round 726 (Div. 2) {1537} PROGRAMMING 1250.0 Codeforces Round #726 (Div.2) Editorial
6376 Erase and Extend (Hard Version) binary search data structures greedy hashing string suffix structures strings Statement E2 Codeforces Round 726 (Div. 2) {1537} PROGRAMMING 1750.0 Codeforces Round #726 (Div.2) Editorial
5429 Gift Set binary search geometry greedy math ternary search Statement G Codeforces Round 725 (Div. 3) {1538} PROGRAMMING Codeforces Round #725 (Div. 3) Editorial
12894 PriceFixed binary search data structures greedy sortings two pointers Statement D Codeforces Round 727 (Div. 2) {1539} PROGRAMMING 1500.0 tutorial 1600
1956 Stringforces binary search bitmasks data structures dp greedy strings two pointers Statement E Educational Codeforces Round 111 (Rated for Div. 2) {1550} PROGRAMMING Educational Codeforces Round 111 Editorial
9896 Mikasa binary search bitmasks greedy implementation Statement C Codeforces Round 735 (Div. 2) {1554} PROGRAMMING 1750.0 Editorial of Codeforces Round #735 (Div. 2) 1800
22915 Deep Down Below binary search greedy sortings Statement C Codeforces Round 740 (Div. 2, based on VK Cup 2021 - Final (Engine)) {1561} PROGRAMMING 1250.0 Codeforces Round #740 Editorial 1300
18768 Slay the Dragon binary search greedy sortings Statement C Educational Codeforces Round 114 (Rated for Div. 2) {1574} PROGRAMMING 95188
5431 Array Stabilization (AND version) binary search brute force graphs greedy implementation math number theory shortest paths Statement F Codeforces Round 744 (Div. 3) {1579} PROGRAMMING Codeforces Round #744 (Div. 3) Editorial
4306 Pchelyonok and Segments binary search data structures dp greedy math Statement E Codeforces Round 750 (Div. 2) {1582} PROGRAMMING 2500.0 Codeforces Round #750 (Div.2) Editorial
28322 Save More Mice binary search greedy greedy Statement C Codeforces Round 748 (Div. 3) {1593} PROGRAMMING Editorial for Codeforces Round #748 (Div.3)
2114 AmShZ and G.O.A.T. binary search brute force greedy math Statement E Codeforces Global Round 17 {1610} PROGRAMMING 2500.0 Codeforces Global Round 17 Editorial
2001 Trader Problem binary search data structures dsu greedy math sortings Statement G Codeforces Round 760 (Div. 3) {1618} PROGRAMMING Codeforces Round #760 (Div. 3) Editorial
8720 New Year's Problem binary search brute force greedy sortings Statement D Codeforces Round 762 (Div. 3) {1619} PROGRAMMING Tutorial
1957 New School binary search data structures greedy implementation sortings Statement E Hello 2022 {1621} PROGRAMMING 2250.0
15841 Set or Decrease binary search greedy ternary search Statement C Educational Codeforces Round 120 (Rated for Div. 2) {1622} PROGRAMMING Educational Codeforces Round 120 Editorial
19379 Palindromes Coloring binary search greedy sortings strings Statement D Codeforces Round 764 (Div. 3) {1624} PROGRAMMING Codeforces Round #764 (Div. 3) Editorial
6541 Range and Partition binary search data structures greedy two pointers Statement B Codeforces Round 768 (Div. 1) {1630} PROGRAMMING 1250.0 Editorial of Codeforces Round #768
14236 Strange Test binary search bitmasks brute force greedy math Statement C Codeforces Round 769 (Div. 2) {1632} PROGRAMMING 1500.0 Editorial of Codeforces Round #769
5457 New Year Concert binary search data structures dp greedy math number theory two pointers Statement D Codeforces Round 769 (Div. 2) {1632} PROGRAMMING 2000.0 Editorial of Codeforces Round #769
4498 Rescheduling the Exam binary search data structures greedy implementation math sortings Statement E Codeforces Round 776 (Div. 3) {1650} PROGRAMMING 100712
1293 Parametric MST binary search graphs greedy math ternary search Statement F CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!) {1656} PROGRAMMING 3000.0 Tutorial
10774 Water the Trees binary search greedy math Statement C Educational Codeforces Round 126 (Rated for Div. 2) {1661} PROGRAMMING Educational Codeforces Round 126 Editorial
920 Teleporters binary search greedy math Statement F Educational Codeforces Round 126 (Rated for Div. 2) {1661} PROGRAMMING Educational Codeforces Round 126 Editorial
1863 MinimizOR binary search bitmasks data structures dp greedy implementation Statement E Codeforces Round 781 (Div. 2) {1665} PROGRAMMING 2250.0 Codeforces Round #781 (Div. 2) Editorial
10058 Tree Infection binary search dfs and similar greedy trees Statement C Codeforces Round 781 (Div. 2) {1665} PROGRAMMING 1250.0 Codeforces Round #781 (Div. 2) Editorial
42665 Eating Candies binary search data structures greedy two pointers Statement F Codeforces Round 784 (Div. 4) {1669} PROGRAMMING 102101 1100
27226 Dolce Vita binary search brute force greedy math Statement C Educational Codeforces Round 127 (Rated for Div. 2) {1671} PROGRAMMING 102181
2610 notepad.exe binary search constructive algorithms greedy interactive Statement E Codeforces Global Round 20 {1672} PROGRAMMING 1500.0 Global Round 20 Editorial 2200
7839 Breaking the Wall binary search brute force constructive algorithms greedy math Statement E Codeforces Round 786 (Div. 3) {1674} PROGRAMMING 102482
34313 Eating Queries binary search greedy sortings Statement E Codeforces Round 790 (Div. 4) {1676} PROGRAMMING Codeforces Round #790 (Div. 4) Editorial
11284 Binary String binary search greedy two pointers Statement C Educational Codeforces Round 128 (Rated for Div. 2) {1680} PROGRAMMING 102852
17223 Price Maximization binary search greedy math two pointers Statement E Codeforces Round 797 (Div. 3) {1690} PROGRAMMING Codeforces Round #797 (Div. 3) Editorial 1500
6072 Permutation Graph binary search constructive algorithms data structures greedy shortest paths trees Statement D Codeforces Global Round 21 {1696} PROGRAMMING 2000.0 Editorial of Codeforces Global Round 21
1877 PermutationForces II binary search brute force combinatorics constructive algorithms greedy sortings Statement E Codeforces Round 803 (Div. 2) {1698} PROGRAMMING 2000.0 Codeforces Round #803 (Div. 2) Editorial
7160 River Locks binary search dp greedy math Statement D Codeforces Round 802 (Div. 2) {1700} PROGRAMMING 1750.0 103978 1900
6328 Permutation Restoration binary search data structures greedy math sortings Statement D Educational Codeforces Round 131 (Rated for Div. 2) {1701} PROGRAMMING Educational Codeforces Round 131 Editorial
32245 Yet Another Problem About Pairs Satisfying an Inequality binary search data structures dp greedy sortings Statement F Codeforces Round 806 (Div. 4) {1703} PROGRAMMING 104786
7806 Chopping Carrots (Easy Version) binary search brute force constructive algorithms dp greedy number theory Statement D1 Codeforces Round 809 (Div. 2) {1706} PROGRAMMING 1000.0 Codeforces Round #809 Editorial
15694 Doremy's IQ binary search greedy implementation Statement A Codeforces Round 808 (Div. 1) {1707} PROGRAMMING 500.0 104930
14682 Min-Max Array Transformation binary search greedy two pointers Statement C Educational Codeforces Round 134 (Rated for Div. 2) {1721} PROGRAMMING 106416
31306 Basketball Together binary search greedy sortings Statement B COMPFEST 14 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1725} PROGRAMMING Tutorial
2082 Red-Black Pepper binary search brute force greedy math number theory sortings ternary search Statement E Educational Codeforces Round 135 (Rated for Div. 2) {1728} PROGRAMMING 106805
18167 Meeting on the Line binary search greedy implementation math ternary search Statement B Codeforces Round 823 (Div. 2) {1730} PROGRAMMING 1000.0 Codeforces Round #823 — editorial 1600
7963 Sheikh (Easy version) binary search bitmasks greedy two pointers Statement C1 Codeforces Round 830 (Div. 2) {1732} PROGRAMMING 1000.0 108327 1800
3168 Sheikh (Hard Version) binary search bitmasks brute force greedy implementation two pointers Statement C2 Codeforces Round 830 (Div. 2) {1732} PROGRAMMING 1000.0 108327 2100
6503 Reset K Edges binary search data structures dfs and similar graphs greedy trees Statement D Educational Codeforces Round 136 (Rated for Div. 2) {1739} PROGRAMMING Educational Codeforces Round 136 Editorial
41550 Scuza binary search greedy math Statement E Codeforces Round 827 (Div. 4) {1742} PROGRAMMING 107962
1709 Bracket Cost binary search data structures divide and conquer dp greedy strings Statement E CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!) {1750} PROGRAMMING 2250.0 CodeTON Round 3 (Div. 1 + Div. 2) Editorial
5671 Restore the Permutation binary search data structures greedy math Statement G Codeforces Round 834 (Div. 3) {1759} PROGRAMMING 109254
4573 All Possible Digits binary search data structures greedy math number theory Statement F Codeforces Round 834 (Div. 3) {1759} PROGRAMMING 109254
15407 Quests binary search greedy sortings Statement F Codeforces Round 835 (Div. 4) {1760} PROGRAMMING 109348
1469 Doremy's Number Line binary search dp greedy sortings Statement E Codeforces Global Round 24 {1764} PROGRAMMING 2250.0 Codeforces Global Round 24 Editorial
1647 Gaining Rating binary search greedy math sortings Statement G Codeforces Round 839 (Div. 3) {1772} PROGRAMMING 110313
1465 Rectangle Shrinking binary search data structures greedy implementation two pointers Statement E VK Cup 2022 - Отборочный раунд (Engine) {1781} PROGRAMMING 2750.0 Tutorial
11085 Yet Another Tournament binary search greedy sortings Statement C Educational Codeforces Round 141 (Rated for Div. 2) {1783} PROGRAMMING Educational Codeforces Round 141 Editorial
6154 Teleporters (Hard Version) binary search greedy sortings Statement G2 Codeforces Round 849 (Div. 4) {1791} PROGRAMMING 112282
17148 Min Max Sort binary search brute force greedy math Statement C Educational Codeforces Round 142 (Rated for Div. 2) {1792} PROGRAMMING 111835
23649 Scoring Subsequences binary search greedy math two pointers Statement C Codeforces Round 856 (Div. 2) {1794} PROGRAMMING 1250.0 Codeforces Round 856 (Div. 2) Editorial
4182 Music Festival binary search data structures dp greedy sortings Statement C Codeforces Round 857 (Div. 1) {1801} PROGRAMMING 1250.0 Codeforces Round #857 Editorial
988 Traveling in Berland binary search data structures graphs greedy implementation Statement F Educational Codeforces Round 145 (Rated for Div. 2) {1809} PROGRAMMING 114300
22742 Points on Plane binary search greedy math Statement B Educational Codeforces Round 145 (Rated for Div. 2) {1809} PROGRAMMING 114300
5612 Black Cells binary search brute force greedy math Statement D Educational Codeforces Round 147 (Rated for Div. 2) {1821} PROGRAMMING 115296
4364 Unique Palindromes binary search constructive algorithms greedy math strings Statement D Codeforces Round 868 (Div. 2) {1823} PROGRAMMING 2000.0 115465
4643 Range Sorting (Easy Version) binary search dp dsu greedy trees two pointers Statement B1 Codeforces Round 873 (Div. 1) {1827} PROGRAMMING 750.0 Codeforces Round #873 (Div. 1 & 2) Editorial 2000
1187 Bus Routes binary search constructive algorithms dfs and similar greedy trees Statement E Codeforces Round 873 (Div. 1) {1827} PROGRAMMING 2500.0 Codeforces Round #873 (Div. 1 & 2) Editorial 3400
3465 Red-Blue Operations (Easy Version) binary search greedy implementation math Statement D1 Educational Codeforces Round 148 (Rated for Div. 2) {1832} PROGRAMMING 116454 2100
2419 Red-Blue Operations (Hard Version) binary search constructive algorithms greedy implementation math Statement D2 Educational Codeforces Round 148 (Rated for Div. 2) {1832} PROGRAMMING 116454 2400
1140 Lottery binary search brute force greedy math sortings two pointers Statement B Codeforces Round 880 (Div. 1) {1835} PROGRAMMING 1250.0 Codeforces Round 880 Editorial
2749 Editorial for Two binary search data structures greedy implementation Statement F Educational Codeforces Round 149 (Rated for Div. 2) {1837} PROGRAMMING 116752
16693 Wooden Toy Festival binary search greedy sortings Statement D Codeforces Round 878 (Div. 3) {1840} PROGRAMMING Codeforces Round #878 (Div.3) Editorial
513 Min Cost Permutation (Hard Version) binary search data structures graphs greedy sortings Statement F2 Codeforces Round 884 (Div. 1 + Div. 2) {1844} PROGRAMMING 1000.0 Codeforces Round #884 (Div. 1 + Div. 2) Editorial
17136 Strong Password binary search dp greedy strings Statement C Educational Codeforces Round 151 (Rated for Div. 2) {1845} PROGRAMMING 117791
1120 The Boss's Identity binary search bitmasks data structures dfs and similar greedy math sortings Statement F Codeforces Round 882 (Div. 2) {1847} PROGRAMMING 3000.0 Tutorial
26445 Vika and the Bridge binary search data structures greedy implementation math sortings Statement B Codeforces Round 885 (Div. 2) {1848} PROGRAMMING 1000.0 Codeforces Round #885 (Div.2) Editorial
915 XOR Partition binary search bitmasks data structures divide and conquer greedy trees Statement F Educational Codeforces Round 152 (Rated for Div. 2) {1849} PROGRAMMING 118752
3264 Trees and Segments binary search brute force constructive algorithms data structures dp greedy two pointers Statement D Codeforces Round 893 (Div. 2) {1858} PROGRAMMING 2000.0 Codeforces Round #893 (Div. 2) Editorial 2200
8087 Andrey and Escape from Capygrad binary search data structures dp dsu greedy sortings two pointers Statement D Codeforces Round 892 (Div. 2) {1859} PROGRAMMING 1750.0 Video solutions from Geothermal.
19231 Fancy Coins binary search brute force greedy math Statement B Educational Codeforces Round 153 (Rated for Div. 2) {1860} PROGRAMMING Educational Codeforces Round 153 Editorial
297 Clubstep binary search brute force data structures greedy trees Statement G Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round) {1876} PROGRAMMING 3250.0 Codeforces Round #902 (Div. 1, Div. 2, based on COMPFEST 15 — Final Round) Editorial
11868 Matching Arrays binary search constructive algorithms greedy sortings Statement C CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} PROGRAMMING 1500.0 CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
8793 Yet Another Monster Fight binary search greedy implementation math Statement D Educational Codeforces Round 158 (Rated for Div. 2) {1901} PROGRAMMING Educational Codeforces Round 158 Editorial
5861 Set To Max (Hard Version) binary search constructive algorithms data structures dsu greedy implementation sortings two pointers Statement D2 Codeforces Round 914 (Div. 2) {1904} PROGRAMMING 750.0 Codeforces Round 914 (Div. 2) Editorial
30446 Collecting Game binary search dp greedy two pointers Statement B Codeforces Round 914 (Div. 2) {1904} PROGRAMMING 750.0 Codeforces Round 914 (Div. 2) Editorial
6456 Blocking Elements binary search data structures dp greedy implementation two pointers Statement D Codeforces Round 922 (Div. 2) {1918} PROGRAMMING 2000.0 Codeforces Round #922 (Div. 2) Editorial
1170 Caterpillar on a Tree binary search dfs and similar graphs greedy implementation trees Statement F Codeforces Round 922 (Div. 2) {1918} PROGRAMMING 3000.0 Codeforces Round #922 (Div. 2) Editorial
547 Shrink-Reverse binary search greedy string suffix structures strings Statement F Educational Codeforces Round 162 (Rated for Div. 2) {1923} PROGRAMMING Educational Codeforces Round 162 Editorial
35617 Find the Different Ones! binary search brute force data structures dp greedy two pointers Statement D Codeforces Round 923 (Div. 3) {1927} PROGRAMMING 125597
5274 Lonely Mountain Dungeons binary search brute force data structures greedy math ternary search Statement D Codeforces Round 924 (Div. 2) {1928} PROGRAMMING 1750.0 Codeforces Round 924 Editorial
21255 Equalize binary search greedy sortings two pointers Statement B Codeforces Round 924 (Div. 2) {1928} PROGRAMMING 1000.0 Codeforces Round 924 Editorial
17594 Sasha and the Casino binary search brute force dp games greedy math Statement C Codeforces Round 926 (Div. 2) {1929} PROGRAMMING 1500.0 Codeforces Round #926 (Div. 2) Editorial.
1691 Distance Learning Courses in MAC binary search bitmasks data structures greedy implementation math Statement E Codeforces Round 932 (Div. 2) {1935} PROGRAMMING 2500.0 Codeforces Round #932 (Div. 2) Editorial
688 Andrey's Tree binary search constructive algorithms dsu greedy implementation trees Statement F Codeforces Round 932 (Div. 2) {1935} PROGRAMMING 3000.0 Codeforces Round #932 (Div. 2) Editorial
7576 Rudolf and Imbalance binary search greedy two pointers Statement F Codeforces Round 933 (Div. 3) {1941} PROGRAMMING 127018
381 MEX Game 2 (Hard Version) binary search greedy two pointers Statement E2 Codeforces Round 934 (Div. 1) {1943} PROGRAMMING 1500.0 Codeforces Round #934 (Div1, Div2) Editorial
14157 Tree Cutting binary search dp greedy implementation trees Statement C Codeforces Round 936 (Div. 2) {1946} PROGRAMMING 1500.0 Codeforces Round #936 (Div. 2) Editorial
5048 Charming Meals binary search brute force greedy sortings Statement B European Championship 2024 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1949} PROGRAMMING European Championship 2024 (EUC) Editorial
15271 Permutation Counting binary search greedy implementation math sortings Statement A Codeforces Round 942 (Div. 1) {1967} PROGRAMMING 750.0 Tutorial 1400
17135 Cat, Fox and the Lonely Array binary search bitmasks data structures greedy math two pointers Statement B Codeforces Round 945 (Div. 2) {1973} PROGRAMMING 1000.0 Editorial for Codeforces Round #945 (Div. 2) 1300
12689 Job Interview binary search dp greedy implementation two pointers Statement C Educational Codeforces Round 166 (Rated for Div. 2) {1976} PROGRAMMING Educational Codeforces Round 166 Editorial
25665 New Bakery binary search greedy math ternary search Statement B Codeforces Round 953 (Div. 2) {1978} PROGRAMMING 750.0 130527
22336 Boring Day binary search data structures dp greedy two pointers Statement C Codeforces Round 955 (Div. 2, with prizes from NEAR!) {1982} PROGRAMMING 1000.0 130839
14942 Have Your Cake and Eat It Too binary search brute force dp greedy implementation Statement C Codeforces Round 956 (Div. 2) and ByteRace 2024 {1983} PROGRAMMING 1250.0
21330 Bouquet (Easy Version) binary search brute force greedy sortings sortings two pointers Statement B1 Codeforces Round 961 (Div. 2) {1995} PROGRAMMING 1000.0 Video Tutorial
10319 Bouquet (Hard Version) binary search data structures greedy math sortings two pointers Statement B2 Codeforces Round 961 (Div. 2) {1995} PROGRAMMING 500.0 Video Tutorial
6515 Bomb binary search greedy math Statement F Codeforces Round 962 (Div. 3) {1996} PROGRAMMING Codeforces Round 962 (Div. 3) Editorial
16404 Maximize the Root binary search dfs and similar dp greedy trees Statement D Educational Codeforces Round 168 (Rated for Div. 2) {1997} PROGRAMMING Video Tutorial