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3933 Exposition binary search data structures dsu trees two pointers Statement E Codeforces Beta Round 6 (Div. 2 Only) {6} PROGRAMMING Beta Round #6 - Разбор задач 1900
633 Lucky Tickets binary search data structures sortings two pointers Statement C Codeforces Beta Round 64 {70} PROGRAMMING Analysis Codeforces Beta Round #64 2200
397 Archer's Shot binary search geometry math two pointers Statement D Codeforces Beta Round 70 (Div. 2) {78} PROGRAMMING Solutions for Codeforces Beta Round #70 (Div. 2) 2400
333 Lucky Segments binary search implementation two pointers Statement D Codeforces Beta Round 91 (Div. 1 Only) {121} PROGRAMMING Tutorial 2400
733 Present to Mom binary search two pointers Statement F Codeforces Beta Round 95 (Div. 2) {131} PROGRAMMING Some ideas for Round #95 (Div 2) 2200
5509 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
13931 Another Problem on Strings binary search brute force dp math strings two pointers Statement C Codeforces Round 112 (Div. 2) {165} PROGRAMMING Codeforces Round #112 (Div. 2) Tutorial 1600
2082 Cubes binary search dp two pointers Statement E Codeforces Round 116 (Div. 2, ACM-ICPC Rules) {180} PROGRAMMING 1700
1504 Spider's Web binary search sortings two pointers Statement D Codeforces Round 133 (Div. 2) {216} PROGRAMMING Editorial for Codeforces Round #133 1800
2349 Olympiad binary search greedy sortings two pointers Statement D Codeforces Round 137 (Div. 2) {222} PROGRAMMING Разбор задач Codeforces Round #137 (Div. 2) 1800
9807 To Add or Not to Add binary search sortings two pointers Statement C Codeforces Round 143 (Div. 2) {231} PROGRAMMING Tutorial Codeforces Round #143 1700
6802 Primes on Interval binary search number theory two pointers Statement C Codeforces Round 147 (Div. 2) {237} PROGRAMMING Codeforces Round #147 (Div. 2) Разбор Задач 1600
21650 Points on Line binary search combinatorics two pointers Statement A Codeforces Round 153 (Div. 1) {251} PROGRAMMING Editorial of Codeforces Round #153 1400
12440 Physics Practical binary search dp sortings two pointers Statement B Codeforces Round 154 (Div. 2) {253} PROGRAMMING Codeforces Round #154 (Div. 2) — tutorial 1400
74730 Books binary search brute force implementation two pointers Statement B Codeforces Round 171 (Div. 2) {279} PROGRAMMING Codeforces Round #171 (Div. 2) Разбор Задач 1400
9460 Eugeny and Play List binary search implementation two pointers Statement B Codeforces Round 182 (Div. 2) {302} PROGRAMMING Codeforces Round #182 tutorial 1200
533 Morning run binary search math two pointers Statement A Croc Champ 2013 - Finals (online version, Div. 1) {309} PROGRAMMING Чемпионат КРОК 2013 — Финальный раунд — Разбор 2000
579 Sereja and Straight Lines binary search data structures geometry sortings two pointers Statement D Codeforces Round 187 (Div. 1) {314} PROGRAMMING Codeforces Round #187 tutorial 2400
3222 Read Time binary search greedy two pointers Statement C Codeforces Round 200 (Div. 1) {343} PROGRAMMING Codeforces Round #200 Tutorial 2100
5778 Pair of Numbers binary search brute force data structures math two pointers Statement D Codeforces Round 209 (Div. 2) {359} PROGRAMMING Editorial Codeforces Round #209 (Div. 2) 2100
1740 Dima and Trap Graph binary search data structures dfs and similar dsu shortest paths two pointers Statement D Codeforces Round 214 (Div. 2) {366} PROGRAMMING Codeforces Round #214 (Div. 2) — Tutorial 2400
15747 Counting Kangaroos is Fun binary search greedy sortings two pointers Statement A Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 1700
1136 Choosing Subtree is Fun binary search data structures dfs and similar trees two pointers Statement D Codeforces Round 219 (Div. 1) {372} PROGRAMMING 9944 2600
785 Volcanoes binary search implementation sortings two pointers Statement B Codeforces Round 225 (Div. 1) {383} PROGRAMMING Tutorial 2200
749 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
6917 Devu and his Brother binary search sortings ternary search two pointers Statement D Codeforces Round 251 (Div. 2) {439} PROGRAMMING Codeforces Round #251 Editorial 1900
864 DZY Loves Strings binary search hashing strings two pointers Statement D Codeforces Round 254 (Div. 1) {444} PROGRAMMING Codeforces Round #254 Editorial 2400
42376 Number of Ways binary search brute force data structures dp two pointers Statement C Codeforces Round 266 (Div. 2) {466} PROGRAMMING Editorial Codeforces Round #266 (Div. 2) 1700
7767 Maximum Value binary search math sortings two pointers Statement B Codeforces Round 276 (Div. 1) {484} PROGRAMMING Codeforces Round #276 — Editorial 2100
4285 Strip binary search data structures dp two pointers Statement B Codeforces Round 278 (Div. 1) {487} PROGRAMMING Tutorial 2300
7541 Vasya and Basketball binary search brute force data structures implementation sortings two pointers Statement C Codeforces Round 281 (Div. 2) {493} PROGRAMMING Codeforces Round #281 (Div. 2) Editorial 1700
5493 R2D2 and Droid Army binary search data structures two pointers Statement D Codeforces Round 291 (Div. 2) {514} PROGRAMMING Codeforces Round #291 (Div. 2) Editorial 2100
32485 Kefa and Company binary search sortings two pointers Statement B Codeforces Round 321 (Div. 2) {580} PROGRAMMING Codeforces Round #321 Editorial 1500
236 BCPC binary search geometry two pointers Statement E Codeforces Round 328 (Div. 2) {592} PROGRAMMING Codeforces Round #328 Problem Analysis 2800
40085 Queries about less or equal elements binary search data structures sortings two pointers Statement B Educational Codeforces Round 2 {600} PROGRAMMING Editorial 1300
3195 Gadgets for dollars and pounds binary search greedy two pointers Statement D Educational Codeforces Round 3 {609} PROGRAMMING 2000
2485 Skills binary search brute force dp greedy sortings two pointers Statement B Codeforces Round 339 (Div. 1) {613} PROGRAMMING Tutorial 2200
12690 Longest k-Good Segment binary search data structures two pointers Statement D Educational Codeforces Round 5 {616} PROGRAMMING Editorial of Educational Codeforces Round 5 1700
2016 Professor GukiZ and Two Arrays binary search two pointers Statement D Educational Codeforces Round 6 {620} PROGRAMMING Editorial of Educational Codeforces Round 6 2200
623 Startup Funding binary search constructive algorithms data structures probabilities two pointers Statement E Manthan, Codefest 16 {633} PROGRAMMING Manthan, Codefest 16: Editorials 2400
4359 Enduring Exodus binary search two pointers Statement C CROC 2016 - Elimination Round {645} PROGRAMMING Editorial for CROC 2016 Elimination Round 1600
3500 Image Preview binary search brute force dp two pointers Statement B Codeforces Round 345 (Div. 1) {650} PROGRAMMING Codeforces Round #345: editorial 1900
10857 Hard Process binary search dp two pointers Statement C Educational Codeforces Round 11 {660} PROGRAMMING Editorial of Educational Codeforces Round 11 1600
23105 Vasya and String binary search dp strings two pointers Statement C Codeforces Round 354 (Div. 2) {676} PROGRAMMING Editorial 1500
136 ...Dary! binary search geometry two pointers Statement F Codeforces Round 362 (Div. 1) {696} PROGRAMMING Codeforces Round #362 (Editorial) 3200
20211 They Are Everywhere binary search strings two pointers Statement C Codeforces Round 364 (Div. 2) {701} PROGRAMMING Codeforces Round #364 problem analysis 1500
23589 Cellular Network binary search implementation two pointers Statement C Educational Codeforces Round 15 {702} PROGRAMMING 46324 1500
5709 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
1609 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
3011 Two strings binary search hashing strings two pointers Statement C Educational Codeforces Round 17 {762} PROGRAMMING Tutorial 2100
2418 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
296 Significant Cups *special binary search data structures two pointers Statement B VK Cup 2017 - Wild Card Round 1 {774} PROGRAMMING VK Cup 2017 — Уайлд-кард раунд 1 — Разбор 2300
6853 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
133 Intranet of Buses binary search geometry implementation two pointers Statement H Технокубок 2017 - Финал (только для онсайт-финалистов) {780} PROGRAMMING Technocup 2017 Finals and Codeforces Round #403 Editorial 3000
2698 Card Game Again binary search data structures number theory two pointers Statement E Educational Codeforces Round 24 {818} PROGRAMMING 52991 2000
6621 The Bakery binary search data structures divide and conquer dp two pointers Statement B Codeforces Round 426 (Div. 1) {833} PROGRAMMING Codeforces Round #426 Editorial 2200
9054 K-Dominant Character binary search implementation two pointers Statement C Educational Codeforces Round 32 {888} PROGRAMMING Educational Codeforces Round 32 - Editorial 1400
3834 XK Segments binary search math sortings two pointers Statement B Codeforces Round 448 (Div. 2) {895} PROGRAMMING Codeforces Round #448(Div.2) Editorial 1700
1305 Bipartite Segments binary search data structures dfs and similar dsu graphs two pointers Statement C Codeforces Round 453 (Div. 1) {901} PROGRAMMING Codeforces Round #453 (Div. 1 & Div. 2) Editorial 2500
2075 Prime Gift binary search dfs and similar math meet-in-the-middle number theory two pointers Statement E Codeforces Round 456 (Div. 2) {912} PROGRAMMING Codeforces Round #456 (Div. 2) Editorial 2600
5635 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
4949 Convenient For Everybody binary search two pointers Statement C Codeforces Round 464 (Div. 2) {939} PROGRAMMING Analysis of Codeforces Round #464 1600
3552 Maximize! binary search greedy ternary search two pointers Statement E Codeforces Round 464 (Div. 2) {939} PROGRAMMING Analysis of Codeforces Round #464 1900
2412 Castle Defense binary search data structures greedy two pointers Statement G Educational Codeforces Round 40 (Rated for Div. 2) {954} PROGRAMMING 58519 2100
1453 Lightsabers (medium) binary search two pointers Statement F2 Helvetic Coding Contest 2018 online mirror (teams allowed, unrated) {958} PROGRAMMING helvetic-coding-contest-2018-editorial.pdf 1900
3359 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
30223 Letters binary search implementation two pointers Statement C Codeforces Round 481 (Div. 3) {978} PROGRAMMING T 1000
4185 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
540 A Shade of Moonlight binary search geometry math sortings two pointers Statement D Codeforces Round 487 (Div. 2) {989} PROGRAMMING Codeforces Round #487 (Div. 2) Editorial 2500
25695 Three Parts of the Array binary search data structures two pointers Statement C Codeforces Round 498 (Div. 3) {1006} PROGRAMMING 60672 1300
591 Intervals of Intervals binary search data structures two pointers Statement D Codeforces Round 511 (Div. 1) {1034} PROGRAMMING Codeforces Round #511 Editorial 3500
10287 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
6452 Glider binary search data structures two pointers Statement D Codeforces Round 509 (Div. 2) {1041} PROGRAMMING Codeforces Round #509 (Div. 2) Editorial 1700
3084 The Tower is Going Home binary search two pointers Statement A Lyft Level 5 Challenge 2018 - Final Round {1044} PROGRAMMING Lyft Level 5 Challenge 2018 — Final Round — Editorial 1700
5227 Maximum Subrectangle binary search implementation two pointers Statement C Codeforces Round 513 by Barcelona Bootcamp (rated, Div. 1 + Div. 2) {1060} PROGRAMMING User editorial for Codeforces Round 513 by Barcelona Bootcamp (rated, Div. 1 + Div. 2) 1600
5501 Vasya and Robot binary search two pointers Statement C Educational Codeforces Round 53 (Rated for Div. 2) {1073} PROGRAMMING 62742 1800
7991 Born This Way binary search brute force two pointers Statement B Codeforces Global Round 3 {1148} PROGRAMMING Codeforces Global Round 3 Editorial 1700
6717 Match Points binary search greedy sortings ternary search two pointers Statement C Educational Codeforces Round 64 (Rated for Div. 2) {1156} PROGRAMMING 66827 2000
8436 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
11129 A Tale of Two Lands binary search sortings two pointers Statement C Codeforces Round 561 (Div. 2) {1166} PROGRAMMING Codeforces Round #561 (Div. 2) Editorial 1600
2942 Range Deleting binary search combinatorics data structures two pointers Statement E Educational Codeforces Round 65 (Rated for Div. 2) {1167} PROGRAMMING 67058 2100
2837 Irrigation binary search data structures implementation sortings trees two pointers Statement D Codeforces Round 567 (Div. 2) {1181} PROGRAMMING Editorial of Codeforces Round #567 (based on All-Russian olympiad in the name of Keldysh) 2100
8182 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
11719 Uniqueness binary search brute force implementation two pointers Statement B Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2) {1208} PROGRAMMING 69357 1500
6586 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
8199 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
7290 Irreducible Anagrams binary search constructive algorithms data structures strings two pointers Statement B Codeforces Round 616 (Div. 1) {1290} PROGRAMMING 1000.0 Codeforces Round #616 Editorial 1900
34592 Pair of Topics binary search data structures sortings two pointers Statement D Codeforces Round 627 (Div. 3) {1324} PROGRAMMING Codeforces Round #627 (Div. 3) Editorial
13555 Eugene and an array binary search data structures hashing implementation two pointers Statement C Codeforces Round 632 (Div. 2) {1333} PROGRAMMING 1250.0 Codeforces Round #632 (Div. 2) editorial
11800 Three Blocks Palindrome (easy version) binary search brute force data structures dp two pointers Statement E1 Codeforces Round 634 (Div. 3) {1335} PROGRAMMING 75993 1700
12282 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
6380 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
35555 Ternary String binary search dp implementation two pointers Statement B Educational Codeforces Round 87 (Rated for Div. 2) {1354} PROGRAMMING 77593 1200
12166 Count Triangles binary search implementation math two pointers Statement C Codeforces Round 643 (Div. 2) {1355} PROGRAMMING 1250.0 Codeforces Round #643 (Div. 2) Editorial 1800
8756 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
4638 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
1880 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
1090 Reading Books (hard version) binary search data structures greedy sortings ternary search two pointers Statement E2 Codeforces Round 653 (Div. 3) {1374} PROGRAMMING 79517
6125 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
1404 Controversial Rounds binary search data structures dp dsu two pointers Statement F Educational Codeforces Round 93 (Rated for Div. 2) {1398} PROGRAMMING Educational Codeforces Round 93 Editorial
2539 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
358 The Potion of Great Power *special binary search data structures graphs interactive sortings two pointers Statement A Central-European Olympiad in Informatics, CEOI 2020, Day 2 (IOI, Unofficial Mirror Contest, Unrated) {1403} PROGRAMMING CEOI 2020 Online Mirror — Day 2 Tutorial
9305 Discrete Acceleration binary search implementation math two pointers Statement C Grakn Forces 2020 {1408} PROGRAMMING 1250.0 Grakn Forces -- Editorial
8501 Two Platforms binary search dp sortings two pointers Statement E Codeforces Round 667 (Div. 3) {1409} PROGRAMMING Codeforces Round #667 (Div. 3) Editorial
17148 k-Amazing Numbers binary search data structures implementation two pointers Statement A Codeforces Round 673 (Div. 1) {1416} PROGRAMMING 500.0 Codeforces Round #673 Editorial 1500
17534 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
2720 Complicated Computations binary search data structures sortings two pointers Statement E Codeforces Round 678 (Div. 2) {1436} PROGRAMMING 2500.0 Codeforces Round #678 (Div. 2). Editorial
4704 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
11503 Close Tuples (hard version) binary search combinatorics implementation math sortings two pointers Statement E2 Codeforces Round 690 (Div. 3) {1462} PROGRAMMING Codeforces Round #690 (Div. 3) Editorial
15317 Close Tuples (easy version) binary search combinatorics math sortings two pointers Statement E1 Codeforces Round 690 (Div. 3) {1462} PROGRAMMING Codeforces Round #690 (Div. 3) Editorial
377 Strange Permutation binary search combinatorics data structures dp two pointers Statement E Codeforces Round 694 (Div. 1) {1470} PROGRAMMING 2000.0 86464
9019 Correct Placement binary search data structures sortings two pointers Statement E Codeforces Round 693 (Div. 3) {1472} PROGRAMMING Codeforces Round #693 (Div. 3) Editorial
11259 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
9930 Max Median binary search data structures dp two pointers Statement D Codeforces Round 703 (Div. 2) {1486} PROGRAMMING 1750.0 Codeforces Round #703 (Div. 2) Editorial
5748 1D Sokoban binary search implementation two pointers Statement C Educational Codeforces Round 105 (Rated for Div. 2) {1494} PROGRAMMING Educational Codeforces Round 105 Editorial
1034 Group Photo binary search combinatorics implementation two pointers Statement E Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2) {1517} PROGRAMMING 2500.0 Contest 2050 and Codeforces Round #718 (Div.1 + Div.2) Editorial
34984 Number of Pairs binary search data structures math two pointers Statement C Codeforces Round 725 (Div. 3) {1538} PROGRAMMING Codeforces Round #725 (Div. 3) Editorial
12803 PriceFixed binary search data structures greedy sortings two pointers Statement D Codeforces Round 727 (Div. 2) {1539} PROGRAMMING 1500.0 tutorial 1600
7074 Array Stabilization (GCD version) binary search constructive algorithms data structures number theory two pointers Statement F Codeforces Round 731 (Div. 3) {1547} PROGRAMMING Codeforces Round #731 (Div. 3) Editorial
11481 Integers Have Friends binary search data structures math number theory two pointers Statement B Codeforces Round 736 (Div. 1) {1548} PROGRAMMING 1000.0 Codeforces Round 736 Editorial
1851 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
4587 Boring Segments binary search data structures sortings two pointers Statement E Educational Codeforces Round 112 (Rated for Div. 2) {1555} PROGRAMMING 93389 2100
2148 Korney Korneevich and XOR (hard version) binary search brute force dp two pointers Statement F2 Codeforces Round 750 (Div. 2) {1582} PROGRAMMING 1500.0 Codeforces Round #750 (Div.2) Editorial
10510 Complex Market Analysis binary search dp implementation number theory schedules two pointers Statement C Deltix Round, Autumn 2021 (open for everyone, rated, Div. 1 + Div. 2) {1609} PROGRAMMING 1500.0 Deltix Round, Autumn 2021. Editorial 1400
7435 ATM and Students binary search data structures two pointers Statement F Codeforces Round 756 (Div. 3) {1611} PROGRAMMING Tutorial 1700
6512 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
5377 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
5333 For Gamers. By Gamers. binary search dp math sortings two pointers Statement D Educational Codeforces Round 125 (Rated for Div. 2) {1657} PROGRAMMING 101161
40966 Eating Candies binary search data structures greedy two pointers Statement F Codeforces Round 784 (Div. 4) {1669} PROGRAMMING 102101 1100
11185 Binary String binary search greedy two pointers Statement C Educational Codeforces Round 128 (Rated for Div. 2) {1680} PROGRAMMING 102852
17104 Price Maximization binary search greedy math two pointers Statement E Codeforces Round 797 (Div. 3) {1690} PROGRAMMING Codeforces Round #797 (Div. 3) Editorial 1500
7612 Max GEQ Sum binary search constructive algorithms data structures divide and conquer implementation sortings two pointers Statement D CodeCraft-22 and Codeforces Round 795 (Div. 2) {1691} PROGRAMMING 1750.0 Editorial for CodeCraft-22 and Codeforces Round #795 (Div. 2)
34536 Binary Deque binary search implementation two pointers Statement E Codeforces Round 799 (Div. 4) {1692} PROGRAMMING Codeforces Round #799 (Div. 4) Editorial
2490 LCM Sum (easy version) binary search brute force combinatorics math number theory two pointers Statement E1 Codeforces Round 813 (Div. 2) {1712} PROGRAMMING 2000.0 Codeforces Round #813 (Div. 2) Editorial
14430 Fighting Tournament binary search data structures implementation two pointers Statement C Codeforces Round 814 (Div. 2) {1719} PROGRAMMING 1250.0 Codeforces Round #814 (Div. 1, Div. 2) Editorial
14627 Min-Max Array Transformation binary search greedy two pointers Statement C Educational Codeforces Round 134 (Rated for Div. 2) {1721} PROGRAMMING 106416
1959 Circular Mirror binary search combinatorics math two pointers Statement C COMPFEST 14 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1725} PROGRAMMING Tutorial
8577 Valiant's New Map binary search brute force data structures dp two pointers Statement D Codeforces Round 841 (Div. 2) and Divide by Zero 2022 {1731} PROGRAMMING 1500.0 Codeforces Round #841 (Div. 2) and Divide By Zero 2022 Editorial
7828 Sheikh (Easy version) binary search bitmasks greedy two pointers Statement C1 Codeforces Round 830 (Div. 2) {1732} PROGRAMMING 1000.0 108327 1800
3113 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
16592 Good Subarrays (Easy Version) binary search data structures two pointers Statement C1 Codeforces Round 825 (Div. 2) {1736} PROGRAMMING 1250.0 Codeforces Round #825 (Div. 2) Editorial
1475 Good Subarrays (Hard Version) binary search data structures two pointers Statement C2 Codeforces Round 825 (Div. 2) {1736} PROGRAMMING 2000.0 Codeforces Round #825 (Div. 2) Editorial
45894 Traffic Light binary search implementation two pointers Statement C Codeforces Round 828 (Div. 3) {1744} PROGRAMMING Codeforces Round #828 (Div. 3) Editorial
8565 Range = √Sum binary search brute force constructive algorithms math two pointers Statement D Codeforces Round 836 (Div. 2) {1758} PROGRAMMING 1750.0 Codeforces Round #836 (Div. 2) Editorial
4890 Watch the Videos binary search constructive algorithms two pointers Statement D 2022-2023 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Preferably Teams) {1765} PROGRAMMING 109642 1700
22017 Hossam and Friends binary search constructive algorithms dp two pointers Statement B Codeforces Round 837 (Div. 2) {1771} PROGRAMMING 1000.0 Codeforces Round #837 (Div. 2) Editorial
1401 Comfortably Numb binary search bitmasks data structures divide and conquer dsu strings trees two pointers Statement F Codeforces Round 845 (Div. 2) and ByteRace 2023 {1777} PROGRAMMING 2750.0 Codeforces Round #845 (Div. 2) and ByteRace 2023 Editorial
1440 Rectangle Shrinking binary search data structures greedy implementation two pointers Statement E VK Cup 2022 - Отборочный раунд (Engine) {1781} PROGRAMMING 2750.0 Tutorial
14852 Going to the Cinema binary search math sortings two pointers Statement B VK Cup 2022 - Отборочный раунд (Engine) {1781} PROGRAMMING 1000.0 Tutorial
4718 Moving Dots binary search brute force combinatorics dp math two pointers Statement D Codeforces Round 851 (Div. 2) {1788} PROGRAMMING 2250.0 Codeforces Round #851 (Div. 2) Editorial
22862 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
2743 Petya, Petya, Petr, and Palindromes binary search data structures two pointers Statement D Codeforces Round 861 (Div. 2) {1808} PROGRAMMING 1750.0 Codeforces Round #861 (Div. 2) editorial 2100
2156 Vlad and the Nice Paths (hard version) binary search combinatorics data structures dp math two pointers Statement G2 Codeforces Round 863 (Div. 3) {1811} PROGRAMMING 114788
1033 Balancing Weapons binary search brute force two pointers Statement D Educational Codeforces Round 146 (Rated for Div. 2) {1814} PROGRAMMING Educational Codeforces Round 146 Editorial
4564 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
2820 MEX of LCM binary search brute force data structures implementation math number theory two pointers Statement E Codeforces Round 879 (Div. 2) {1834} PROGRAMMING 2500.0 Codeforces Round #879 Editorial
1094 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
2216 Max to the Right of Min binary search data structures divide and conquer dsu two pointers Statement E Educational Codeforces Round 152 (Rated for Div. 2) {1849} PROGRAMMING 118752
9311 Ntarsis' Set binary search implementation math two pointers Statement A Codeforces Round 887 (Div. 1) {1852} PROGRAMMING 500.0 Codeforces Round 887 (Div 1, Div 2) Tutorial
3218 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
8043 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.
13193 Colorful Table binary search data structures dp implementation math sortings two pointers Statement C CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!) {1870} PROGRAMMING 1500.0 CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
1267 Split binary search data structures divide and conquer math two pointers Statement D Codeforces Round 905 (Div. 1) {1887} PROGRAMMING 1250.0 Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial
5792 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
29213 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
4674 Cyclic MEX binary search constructive algorithms data structures implementation math two pointers Statement D Codeforces Round 915 (Div. 2) {1905} PROGRAMMING 2000.0 Codeforces Round 915 (Div. 2) Editorial
6317 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
34323 Find the Different Ones! binary search brute force data structures dp greedy two pointers Statement D Codeforces Round 923 (Div. 3) {1927} PROGRAMMING 125597
20928 Equalize binary search greedy sortings two pointers Statement B Codeforces Round 924 (Div. 2) {1928} PROGRAMMING 1000.0 Codeforces Round 924 Editorial
7480 Rudolf and Imbalance binary search greedy two pointers Statement F Codeforces Round 933 (Div. 3) {1941} PROGRAMMING 127018
373 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
988 Long Way to be Non-decreasing binary search dfs and similar graphs implementation shortest paths two pointers Statement D Codeforces Round 942 (Div. 1) {1967} PROGRAMMING 1750.0 Tutorial 2800
16960 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
4430 Cutting Game binary search brute force data structures implementation sortings two pointers Statement F Codeforces Round 946 (Div. 3) {1974} PROGRAMMING Codeforces Round #946 (Div. 3) Editorial 1900
5859 Invertible Bracket Sequences binary search combinatorics data structures divide and conquer implementation two pointers Statement D Educational Codeforces Round 166 (Rated for Div. 2) {1976} PROGRAMMING Educational Codeforces Round 166 Editorial
12557 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
1833 Manhattan Triangle binary search constructive algorithms data structures geometry graphs two pointers Statement E Codeforces Round 951 (Div. 2) {1979} PROGRAMMING 2500.0 Codeforces Round 951 (Div. 2) Editorial
22110 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
1546 array-value binary search bitmasks data structures two pointers Statement F Codeforces Round 956 (Div. 2) and ByteRace 2024 {1983} PROGRAMMING 2500.0
13823 Hungry Games binary search data structures dp two pointers Statement C Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2) {1994} PROGRAMMING 1250.0 Video Tutorial
21146 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
10237 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
2094 Eri and Expanded Sets binary search data structures number theory two pointers Statement C Codeforces Round 969 (Div. 1) {2006} PROGRAMMING 1500.0 Tutorial
5500 Yunli's Subarray Queries (easy version) binary search two pointers Statement G1 Codeforces Round 971 (Div. 4) {2009} PROGRAMMING Codeforces Round 971 (Div. 4) Editorial
5277 Speedbreaker binary search dp greedy implementation math two pointers Statement B Codeforces Round 975 (Div. 1) {2018} PROGRAMMING 750.0 Editorial of Codeforces Round 975 (Div. 1, Div. 2)
19273 New Game binary search brute force greedy implementation two pointers Statement C Educational Codeforces Round 170 (Rated for Div. 2) {2025} PROGRAMMING Educational Codeforces Round 170 Editorial
28835 Two Screens binary search greedy strings two pointers Statement A Educational Codeforces Round 170 (Rated for Div. 2) {2025} PROGRAMMING Educational Codeforces Round 170 Editorial
1924 The Endspeaker (Hard Version) binary search combinatorics data structures dp greedy implementation two pointers Statement D2 Codeforces Round 982 (Div. 2) {2027} PROGRAMMING 1000.0 Codeforces Round #982 (Div. 2) Editorial
7071 The Endspeaker (Easy Version) binary search dp graphs greedy implementation two pointers Statement D1 Codeforces Round 982 (Div. 2) {2027} PROGRAMMING 1250.0 Codeforces Round #982 (Div. 2) Editorial
10124 Alice's Adventures in Cutting Cake binary search dp greedy two pointers Statement C Codeforces Round 986 (Div. 2) {2028} PROGRAMMING 1500.0 Codeforces Round 986 (Div. 2) Editorial
1197 Orangutan Approved Subarrays binary search brute force data structures greedy two pointers Statement F Codeforces Round 979 (Div. 2) {2030} PROGRAMMING 2500.0 Codeforces Round 979 Editorial
6276 Genokraken binary search constructive algorithms data structures graphs interactive trees two pointers Statement D Codeforces Round 983 (Div. 2) {2032} PROGRAMMING 1750.0 Codeforces Round 983 (Div. 2) Editorial
16407 Trinity binary search math sortings two pointers Statement C Codeforces Round 983 (Div. 2) {2032} PROGRAMMING 1250.0 Codeforces Round 983 (Div. 2) Editorial
5875 Yet Another Real Number Problem binary search brute force data structures dp greedy implementation math two pointers Statement D Codeforces Global Round 27 {2035} PROGRAMMING 1500.0 Codeforces Global Round 27 Editorial
2992 Ardent Flames binary search data structures sortings two pointers Statement F Codeforces Round 988 (Div. 3) {2037} PROGRAMMING Video Tutorial
8427 Kevin and Competition Memories binary search data structures greedy sortings two pointers Statement D Codeforces Global Round 28 {2048} PROGRAMMING 1250.0 Tutorial
24357 Counting Pairs binary search sortings two pointers Statement D Codeforces Round 995 (Div. 3) {2051} PROGRAMMING 137623
2291 Kevin and Binary String (Easy Version) binary search brute force data structures dp greedy implementation strings two pointers Statement F1 IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) {2061} PROGRAMMING 2000.0 IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) Editorial
5111 Game With Triangles binary search data structures dp greedy math ternary search two pointers Statement D Codeforces Round 1000 (Div. 2) {2063} PROGRAMMING 2250.0 Codeforces Round 1000 (Div. 2) — Editorial
5943 Eating binary search bitmasks data structures greedy two pointers Statement D Codeforces Round 1005 (Div. 2) {2064} PROGRAMMING 1750.0 Codeforces Round 1005 (Div. 2) Editorial
718 We Be Summing binary search data structures two pointers Statement F Codeforces Round 1005 (Div. 2) {2064} PROGRAMMING 2750.0 Codeforces Round 1005 (Div. 2) Editorial
1664 Ads binary search greedy two pointers Statement C European Championship 2025 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {2068} PROGRAMMING 140239
7152 Palindrome Shuffle binary search greedy hashing strings two pointers Statement D Educational Codeforces Round 174 (Rated for Div. 2) {2069} PROGRAMMING 139774
3281 Canteen (Easy Version) binary search data structures flows greedy two pointers Statement B1 Codeforces Round 1012 (Div. 1) {2089} PROGRAMMING 1000.0 Codeforces Round 1012 (Div.1, Div. 2, based on THUPC 2025 — Finals) Editorial
1299 Canteen (Hard Version) binary search data structures greedy math two pointers Statement B2 Codeforces Round 1012 (Div. 1) {2089} PROGRAMMING 500.0 Codeforces Round 1012 (Div.1, Div. 2, based on THUPC 2025 — Finals) Editorial
3888 Shorten the Array binary search brute force data structures dfs and similar greedy strings trees two pointers Statement G Codeforces Round 1016 (Div. 3) {2093} PROGRAMMING Codeforces Round 1016 (Div. 3) Editorial
2602 23 Kingdom binary search data structures greedy ternary search two pointers Statement C Codeforces Round 1024 (Div. 1) {2101} PROGRAMMING 2000.0 142788
12494 Flower Boy binary search dp greedy two pointers Statement D Codeforces Round 1020 (Div. 3) {2106} PROGRAMMING Codeforces Round 1020 (Div. 3) Editorial
18007 Coloring Game binary search brute force greedy two pointers Statement C Educational Codeforces Round 180 (Rated for Div. 2) {2112} PROGRAMMING Educational Codeforces Round 180 — Editorial
15171 MEX Count binary search data structures greedy sortings two pointers Statement E Codeforces Round 1034 (Div. 3) {2123} PROGRAMMING Codeforces Round 1034 (Div. 3) Editorial
2519 Big Wins! (easy version) binary search binary search two pointers Statement G1 Codeforces Round 1037 (Div. 3) {2126} PROGRAMMING 144845
1198 Big Wins! (hard version) binary search data structures divide and conquer two pointers Statement G2 Codeforces Round 1037 (Div. 3) {2126} PROGRAMMING 144845
812 Submedians (Hard Version) binary search constructive algorithms data structures two pointers Statement E2 Codeforces Round 1039 (Div. 2) {2128} PROGRAMMING 1750.0 Codeforces Round #1039 — Editorial
4787 Unjust Binary Life binary search binary search data structures greedy greedy math two pointers Statement F Codeforces Round 1042 (Div. 3) {2131} PROGRAMMING Codeforces Round 1042 (Div. 3) Editorial
6697 Inversion Graph Coloring (Easy Version) binary search data structures dp two pointers Statement D1 Codeforces Round 1051 (Div. 2) {2143} PROGRAMMING 1750.0 Codeforces Round 1051 (Div. 2) Editorial
2938 Inversion Graph Coloring (Hard Version) binary search data structures dp two pointers Statement D2 Codeforces Round 1051 (Div. 2) {2143} PROGRAMMING 1000.0 Codeforces Round 1051 (Div. 2) Editorial
1232 No Mind To Think binary search greedy sortings ternary search two pointers Statement E Codeforces Round 1060 (Div. 2) {2154} PROGRAMMING 2500.0 Codeforces Round 1060 (Div. 2) Editorial
1168 Inverse Minimum Partition (Easy Version) binary search data structures dp greedy math two pointers Statement D1 Codeforces Round 1058 (Div. 1) {2159} PROGRAMMING 1500.0 Codeforces Round 1058 Editorial
2821 Locked Out binary search data structures dp graphs greedy implementation two pointers Statement D Pinely Round 5 (Div. 1 + Div. 2) {2161} PROGRAMMING 2250.0
11636 Quotient and Remainder binary search greedy two pointers Statement C Educational Codeforces Round 185 (Rated for Div. 2) {2170} PROGRAMMING Educational Codeforces Round 185 Editorial
11025 War Strategy binary search greedy math two pointers Statement C Hello 2026 {2183} PROGRAMMING 1500.0
10682 The Robotic Rush binary search implementation two pointers Statement E Codeforces Round 1074 (Div. 4) {2185} PROGRAMMING Codeforces Round 1074 (Div. 4) Editorial
1335 Comparable Permutations binary search greedy interactive sortings two pointers Statement C Codeforces Round 1073 (Div. 1) {2190} PROGRAMMING 1750.0 Codeforces Round 1073 (Div. 1, Div. 2) Editorial
22304 Monster Game binary search sortings two pointers Statement D Codeforces Round 1076 (Div. 3) {2193} PROGRAMMING Разбор Codeforces Round 1076 (Div. 3)
1313 Sum of Fractions binary search combinatorics greedy math two pointers Statement F Educational Codeforces Round 188 (Rated for Div. 2) {2204} PROGRAMMING Educational Codeforces Round 188 Editorial
3333 Zhily and Barknights binary search data structures dp math sortings two pointers Statement B Codeforces Round 1097 (Div. 1, Based on Zhili Cup 2026) {2223} PROGRAMMING 750.0 Codeforces Round 1097 (Div. 1, Div2, Based on Zhili Cup 2026) Tutorial
7526 Mental Monumental (Easy Version) binary search data structures greedy math two pointers Statement C Codeforces Round 1095 (Div. 2) {2226} PROGRAMMING 1500.0 Codeforces Round 1095 (Div. 2) Editorial
12728 Palindromex binary search brute force constructive algorithms data structures greedy implementation two pointers Statement D Codeforces Round 1096 (Div. 3) {2227} PROGRAMMING Codeforces Round 1096 (Div. 3) — Editorial
1329 Minimum Influence binary search data structures geometry greedy implementation math sortings two pointers Statement E Educational Codeforces Round 190 (Rated for Div. 2) {2230} PROGRAMMING Educational Codeforces Round 190 — Editorial
11047 Seating Arrangement (Easy Version) binary search dp greedy ternary search two pointers Statement C1 Codeforces Round 1101 (Div. 2) {2232} PROGRAMMING 750.0 Codeforces Round 1101 (Div. 2) — Editorial
7847 Seating Arrangement (Hard Version) binary search greedy ternary search two pointers Statement C2 Codeforces Round 1101 (Div. 2) {2232} PROGRAMMING 1000.0 Codeforces Round 1101 (Div. 2) — Editorial