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2089 Big Maximum Sum data structures dp greedy implementation math trees Statement D Codeforces Beta Round 67 (Div. 2) {75} PROGRAMMING Codeforces Beta Round #67 (Div. 2) Editorial 2100
1857 Average Score greedy math sortings Statement C Yandex.Algorithm Open 2011: Qualification 1 {81} PROGRAMMING 1700
5759 Division into Teams greedy math sortings Statement C Codeforces Round 106 (Div. 2) {149} PROGRAMMING Codeforces Round #106 (Div. 2) Tutorial 1500
7581 Median greedy math sortings Statement C Codeforces Round 113 (Div. 2) {166} PROGRAMMING Codeforces Round #113 (Div. 2) Tutorial 1500
619 Hamming Distance constructive algorithms greedy math matrices Statement C Codeforces Round 122 (Div. 1) {193} PROGRAMMING Editoral Codeforces Round #122 2400
10115 Routine Problem greedy math number theory Statement B Codeforces Round 196 (Div. 2) {337} PROGRAMMING Codeforces Round #196 — Problems Analysis 1400
5252 Quiz binary search greedy math matrices number theory Statement C Codeforces Round 196 (Div. 2) {337} PROGRAMMING Codeforces Round #196 — Problems Analysis 1700
2444 Two Heaps combinatorics constructive algorithms greedy implementation math sortings Statement B Codeforces Round 205 (Div. 2) {353} PROGRAMMING 9145 1800
1448 Subway Innovation greedy math two pointers Statement E Codeforces Round 218 (Div. 2) {371} PROGRAMMING Codeforces Round #218 (Div. 2): Tutorial 2200
10899 Bear and Strings brute force greedy implementation math strings Statement B Codeforces Round 226 (Div. 2) {385} PROGRAMMING Codeforces Round #226 (Div. 2) — Editorial 1300
2795 Upgrading Array dp greedy math number theory Statement D Codeforces Round 236 (Div. 2) {402} PROGRAMMING Editorial Codeforces Round #236 2000
1628 Police Patrol greedy implementation math ternary search Statement E Codeforces Round 244 (Div. 2) {427} PROGRAMMING Codeforces Round #244 (Div. 2) Editorial 2000
6162 Andrey and Problem greedy math probabilities Statement B Codeforces Round 253 (Div. 1) {442} PROGRAMMING Codeforces #253 editorial 1800
9651 New Year Permutation dfs and similar dsu graphs greedy math sortings Statement B Good Bye 2014 {500} PROGRAMMING Tutorial 2 1600
24068 Anton and currency you all know greedy math strings Statement B Codeforces Round 288 (Div. 2) {508} PROGRAMMING 16048 1300
28884 Drazil and Factorial greedy math sortings Statement C Codeforces Round 292 (Div. 2) {515} PROGRAMMING Codeforces Round #292 Editorial 1400
1064 Arthur and Questions greedy implementation math ternary search Statement E Codeforces Round 293 (Div. 2) {518} PROGRAMMING 2400
20766 A and B and Team Training greedy implementation math number theory Statement C Codeforces Round 294 (Div. 2) {519} PROGRAMMING Editorial 1300
63618 Two Buttons dfs and similar graphs greedy implementation math shortest paths Statement B Codeforces Round 295 (Div. 2) {520} PROGRAMMING Codeforces Round #295 Editorial (now with bonuses!) 1400
10295 Pasha and String constructive algorithms greedy math strings Statement B Codeforces Round 297 (Div. 2) {525} PROGRAMMING Codeforces Round #297 (Div.2) Editorial 1500
6086 Ilya and Sticks greedy math sortings Statement C Codeforces Round 297 (Div. 2) {525} PROGRAMMING Codeforces Round #297 (Div.2) Editorial 1600
5884 Vanya and Scales brute force dp greedy math meet-in-the-middle number theory Statement C Codeforces Round 308 (Div. 2) {552} PROGRAMMING Codeforces #308 (Div. 2) Editorial 1800
4230 Arthur and Table brute force data structures dp greedy math sortings Statement C Codeforces Round 311 (Div. 2) {557} PROGRAMMING Codeforces Round #311 (Div.2) Editorial 1900
4220 Amr and Chemistry brute force graphs greedy math shortest paths Statement C Codeforces Round 312 (Div. 2) {558} PROGRAMMING Codeforces Round #312 (Div. 2) Editorial 2000
557 Birthday greedy math probabilities Statement D AIM Tech Round (Div. 1) {623} PROGRAMMING 2600
4624 Block Towers brute force greedy math number theory Statement C 8VC Venture Cup 2016 - Elimination Round {626} PROGRAMMING 23522 1600
617 Bear and Paradox greedy math sortings Statement E VK Cup 2016 - Round 1 {639} PROGRAMMING Tutorial 2800
10528 Co-prime Array greedy implementation math number theory Statement A Educational Codeforces Round 11 {660} PROGRAMMING Editorial of Educational Codeforces Round 11 1300
2286 Ray Tracing greedy hashing implementation math number theory sortings Statement C Intel Code Challenge Final Round (Div. 1 + Div. 2, Combined) {724} PROGRAMMING Tutorial 1800
57695 Bachgold Problem greedy implementation math number theory Statement A Codeforces Round 388 (Div. 2) {749} PROGRAMMING Tutorial 700
11485 Bash's Big Day greedy math number theory Statement B Codecraft-17 and Codeforces Round 391 (Div. 1 + Div. 2, combined) {757} PROGRAMMING CodeCraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) Editorial 1400
2946 Ability To Convert constructive algorithms dp greedy math strings Statement D Codeforces Round 392 (Div. 2) {758} PROGRAMMING Codeforces Round #392 (Div. 2) Editorial 1900
38661 Mahmoud and a Triangle constructive algorithms geometry greedy math number theory sortings Statement B Codeforces Round 396 (Div. 2) {766} PROGRAMMING Codeforces round #396 editorial 1100
5044 Divide by Three dp greedy math number theory Statement C Educational Codeforces Round 18 {792} PROGRAMMING Educational Codeforces Round 18 - Editorial 2000
1272 Colored Balls greedy math number theory Statement E Educational Codeforces Round 18 {792} PROGRAMMING Educational Codeforces Round 18 - Editorial 2400
3295 My pretty girl Noora brute force dp greedy math number theory Statement D Codeforces Round 422 (Div. 2) {822} PROGRAMMING Codeforces Round #422 (Div. 2) Editorial 1800
7521 Leha and Function combinatorics greedy math number theory sortings Statement A Codeforces Round 429 (Div. 1) {840} PROGRAMMING Editorial 1300
9807 Maximum splitting dp greedy math number theory Statement C Technocup 2018 - Elimination Round 2 {870} PROGRAMMING Editorial Codeforces Round 440 Div.1+Div.2 (and Technocup 2018 — Elimination Round 2) 1300
14731 Pride brute force dp greedy math number theory Statement A Codeforces Round 446 (Div. 1) {891} PROGRAMMING Codeforces Round #446 Editorial 1600
10059 Swap Adjacent Elements dfs and similar greedy math sortings two pointers Statement C Educational Codeforces Round 37 (Rated for Div. 2) {920} PROGRAMMING T 1500
3278 Mahmoud and Ehab and another array construction task constructive algorithms greedy math number theory Statement D Codeforces Round 473 (Div. 2) {959} PROGRAMMING Codeforces round #473 editorial 2000
2213 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
2057 Leaving the Bar brute force data structures geometry greedy math sortings Statement C Codeforces Round 492 (Div. 1) [Thanks, uDebug!] {995} PROGRAMMING Editorial for Codeforces Round #492 [Thanks u-Debug!] 2200
8334 Maximal Intersection greedy math sortings Statement C Codeforces Round 506 (Div. 3) {1029} PROGRAMMING Codeforces Round #506 (Div. 3) Editorial 1600
3470 Train Hard, Win Easy constructive algorithms greedy math sortings Statement E Codeforces Round 519 by Botan Investments {1043} PROGRAMMING Codeforces Round #519 Editorial 1900
18918 Relatively Prime Pairs greedy math number theory Statement B Educational Codeforces Round 51 (Rated for Div. 2) {1051} PROGRAMMING Educational Codeforces Round 51 Editorial 1000
9967 Math greedy math number theory Statement B Codeforces Round 520 (Div. 2) {1062} PROGRAMMING Tutorial 1600
491 Computer Game dp greedy math probabilities Statement D Codeforces Round 518 (Div. 1) [Thanks, Mail.Ru!] {1067} PROGRAMMING Tutorial 2800
2835 Missing Numbers binary search constructive algorithms greedy math number theory Statement E Avito Cool Challenge 2018 {1081} PROGRAMMING 63888 1900
1624 Ehab and a component choosing problem dp greedy math trees Statement E Codeforces Round 525 (Div. 2) {1088} PROGRAMMING Codeforces round #525 editorial 2400
1092 New Year and the Acquaintance Estimation binary search data structures graphs greedy implementation math sortings Statement E Good Bye 2018 {1091} PROGRAMMING Editorial 2400
15989 Lunar New Year and Number Division greedy implementation math sortings Statement C Codeforces Round 536 (Div. 2) {1106} PROGRAMMING Tutorial 1000
25320 Divisors of Two Integers brute force greedy math number theory Statement B Codeforces Round 535 (Div. 3) {1108} PROGRAMMING 64751 1100
15839 Emotes greedy math sortings Statement B Educational Codeforces Round 60 (Rated for Div. 2) {1117} PROGRAMMING 65365 1000
4207 Circus brute force greedy math strings Statement B Codeforces Round 545 (Div. 2) {1138} PROGRAMMING Codeforces Round #545 – Editorial 1700
1834 Earth Wind and Fire constructive algorithms greedy math sortings two pointers Statement E Codeforces Global Round 3 {1148} PROGRAMMING Codeforces Global Round 3 Editorial 2300
18059 Prefix Sum Primes constructive algorithms greedy math number theory Statement A Codeforces Round 556 (Div. 1) {1149} PROGRAMMING 66783 1300
9146 Stas and the Queue at the Buffet greedy math sortings Statement D Codeforces Round 553 (Div. 2) {1151} PROGRAMMING Codeforces Round #553 (Div. 2) Editorial 1500
3326 Minimum Possible LCM brute force greedy math number theory Statement G Codeforces Round 552 (Div. 3) {1154} PROGRAMMING Codeforces Round #552 (Div. 3) Editorial 2400
8441 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
2130 Permutation recovery constructive algorithms data structures dfs and similar graphs greedy math sortings Statement C Codeforces Round 559 (Div. 1) {1158} PROGRAMMING 66993 2300
10128 Two Arrays and Sum of Functions greedy math sortings Statement E Codeforces Round 560 (Div. 3) {1165} PROGRAMMING Codeforces Round #560 (Div. 3) Editorial 1800
7950 Prime Graph constructive algorithms greedy math number theory Statement D Codeforces Global Round 4 {1178} PROGRAMMING E 1600
2489 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
15384 Number Circle greedy math sortings Statement B Codeforces Round 572 (Div. 2) {1189} PROGRAMMING Editorial of Codeforces Round #572 1100
14072 DIY Wooden Ladder greedy math sortings Statement A Educational Codeforces Round 69 (Rated for Div. 2) {1197} PROGRAMMING E 1000
34495 Maximum Median binary search greedy math sortings Statement C Codeforces Round 577 (Div. 2) {1201} PROGRAMMING Codeforces Round #577 (Div 2) Editorial 1400
2777 You Are Given a WASD-string... brute force data structures dp greedy implementation math strings Statement C Educational Codeforces Round 70 (Rated for Div. 2) {1202} PROGRAMMING 68972 2100
3402 Kirk and a Binary String (hard version) data structures greedy math strings Statement D2 Codeforces Round 581 (Div. 2) {1204} PROGRAMMING 69244 2100
930 Polygons greedy math number theory Statement G Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2) {1208} PROGRAMMING 69357 2700
18086 Grow The Tree greedy math sortings Statement B Codeforces Round 594 (Div. 2) {1248} PROGRAMMING Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) 900
13582 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
15441 Sweets Eating dp greedy math sortings Statement C Codeforces Round 600 (Div. 2) {1253} PROGRAMMING Editorial 1500
5045 Send Boxes to Alice (Easy Version) constructive algorithms greedy math number theory ternary search two pointers Statement B1 Codeforces Round 601 (Div. 1) {1254} PROGRAMMING Codeforces Round #601 Editorial 2000
3435 Send Boxes to Alice (Hard Version) constructive algorithms greedy math number theory ternary search two pointers Statement B2 Codeforces Round 601 (Div. 1) {1254} PROGRAMMING Codeforces Round #601 Editorial 2100
745 Divisor Set divide and conquer fft greedy math number theory Statement G Educational Codeforces Round 76 (Rated for Div. 2) {1257} PROGRAMMING Educational Codeforces Round 76 Editorial 2700
8853 Infinite Fence greedy math number theory Statement C Educational Codeforces Round 77 (Rated for Div. 2) {1260} PROGRAMMING Educational Codeforces Round 77 Editorial 1700
10088 Diverse Matrix constructive algorithms greedy math number theory Statement C Codeforces Global Round 6 {1266} PROGRAMMING Codeforces Global Round 6 Editorial 1400
3883 Decreasing Debts constructive algorithms data structures graphs greedy implementation math two pointers Statement D Codeforces Global Round 6 {1266} PROGRAMMING Codeforces Global Round 6 Editorial 2000
22152 Three Friends brute force greedy math sortings Statement A Codeforces Round 605 (Div. 3) {1272} PROGRAMMING Codeforces Round #605 (Div. 3) Editorial 900
20816 Even But Not Even greedy math strings Statement A Codeforces Round 616 (Div. 2) {1291} PROGRAMMING 500.0 Codeforces Round #616 Editorial 1000
994 Chaotic V. dp graphs greedy math number theory trees Statement D Codeforces Round 614 (Div. 1) {1292} PROGRAMMING 1750.0 Codeforces Round #614 Editorial 2700
47449 Product of Three Numbers greedy math number theory Statement C Codeforces Round 615 (Div. 3) {1294} PROGRAMMING Codeforces Round #615 (Div. 3) Editorial 1300
9933 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
18445 Adding Powers bitmasks greedy implementation math number theory ternary search Statement C Educational Codeforces Round 83 (Rated for Div. 2) {1312} PROGRAMMING 74640
19232 Composite Coloring brute force constructive algorithms greedy math number theory Statement B Codeforces Round 630 (Div. 2) {1332} PROGRAMMING 1000.0 Codeforces Round #630 Editorial 1500
4597 Kate and imperfection greedy implementation math number theory sortings two pointers Statement F Codeforces Round 632 (Div. 2) {1333} PROGRAMMING 2500.0 Codeforces Round #632 (Div. 2) editorial
3198 Divisor Paths combinatorics graphs greedy math number theory Statement E Educational Codeforces Round 85 (Rated for Div. 2) {1334} PROGRAMMING Educational Codeforces Round 85 Editorial
12284 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
37024 Kana and Dragon Quest game greedy implementation math Statement B Codeforces Round 635 (Div. 2) {1337} PROGRAMMING 1000.0 Codeforces Round #635 Editorial 1000
9620 Edge Weight Assignment bitmasks constructive algorithms greedy math trees Statement B Codeforces Round 633 (Div. 1) {1338} PROGRAMMING 1000.0 Editorial
5892 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
8385 A/B Matrix constructive algorithms flows greedy math number theory Statement G Codeforces Round 644 (Div. 3) {1360} PROGRAMMING Codeforces Round #644 (Div. 3) Editorial 1900
3878 Johnny and Grandmaster greedy implementation math sortings Statement B Codeforces Round 647 (Div. 1) - Thanks, Algo Muse! {1361} PROGRAMMING 1250.0 Codeforces Round #647 Editorial 1900
341 Johnny and James greedy implementation math trees Statement D Codeforces Round 647 (Div. 1) - Thanks, Algo Muse! {1361} PROGRAMMING 2500.0 Codeforces Round #647 Editorial 2900
21612 Codeforces Subsequences brute force constructive algorithms greedy math strings Statement B Codeforces Global Round 8 {1368} PROGRAMMING 1000.0 Codeforces Global Round 8: editorial
20986 RationalLee greedy math sortings Statement C Codeforces Round 652 (Div. 2) {1369} PROGRAMMING 1500.0 Codeforces Round #652 (Div. 2) Editorial 1400
9263 TediousLee dp graphs greedy math matrices trees Statement D Codeforces Round 652 (Div. 2) {1369} PROGRAMMING 2000.0 Codeforces Round #652 (Div. 2) Editorial 1900
37217 Omkar and Last Class of Math constructive algorithms greedy math number theory Statement B Codeforces Round 655 (Div. 2) {1372} PROGRAMMING 1000.0 Codeforces Round #655 Editorial 1300
2968 Sum of Digits brute force constructive algorithms dp greedy math number theory Statement E Educational Codeforces Round 90 (Rated for Div. 2) {1373} PROGRAMMING Educational Codeforces Round 90 Editorial
6126 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
937 Circular Dungeon greedy math probabilities Statement G Educational Codeforces Round 91 (Rated for Div. 2) {1380} PROGRAMMING Educational Codeforces Round 91 Editorial
10451 Uncle Bogdan and Country Happiness dfs and similar dp greedy math trees Statement C Codeforces Round 660 (Div. 2) {1388} PROGRAMMING 1500.0 Codeforces Round #660 Editorial 1800
50708 LCM Problem constructive algorithms greedy math number theory Statement A Educational Codeforces Round 92 (Rated for Div. 2) {1389} PROGRAMMING 80809
9922 Omkar and Bed Wars constructive algorithms dp greedy math strings Statement D Codeforces Global Round 10 {1392} PROGRAMMING 1500.0 Codeforces Global Round 10 — Editorial
11078 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
2606 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
10652 Maximum Distributed Tree constructive algorithms dfs and similar greedy math number theory sortings trees Statement D Codeforces Round 665 (Div. 2) {1401} PROGRAMMING 1750.0 Codeforces Round #665 (Div. 2) Editorial
18168 Big Vova brute force greedy math number theory Statement B Codeforces Round 669 (Div. 2) {1407} PROGRAMMING 1000.0 Codeforces Round #669 Editorial
436 The Thorny Path greedy math matrices Statement F Technocup 2021 - Elimination Round 3 {1411} PROGRAMMING 2750.0 Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial
15096 Two Arrays greedy math sortings Statement B Codeforces Round 673 (Div. 2) {1417} PROGRAMMING 1000.0 Codeforces Round #673 Editorial 1100
17049 Stairs brute force constructive algorithms greedy implementation math two pointers Statement B Codeforces Round 671 (Div. 2) {1419} PROGRAMMING 750.0 Codeforces Round #671 Editorial
16713 Saving the City greedy math sortings Statement B Codeforces Round 681 (Div. 2, based on VK Cup 2019-2020 - Final) {1443} PROGRAMMING 1000.0 VK Cup 2019-2020 -- Engine Editorial
15538 Toy Blocks binary search greedy math sortings Statement B Educational Codeforces Round 98 (Rated for Div. 2) {1452} PROGRAMMING 84847
4461 Checkpoints brute force constructive algorithms greedy math probabilities Statement D Codeforces Round 688 (Div. 2) {1453} PROGRAMMING 2000.0 Codeforces Round #688 (Div. 2) Editorial
1654 Four Points brute force constructive algorithms flows geometry greedy math ternary search Statement E Educational Codeforces Round 99 (Rated for Div. 2) {1455} PROGRAMMING 85186
18267 Add to Neighbour and Remove greedy math number theory Statement D Codeforces Round 690 (Div. 3) {1462} PROGRAMMING Codeforces Round #690 (Div. 3) Editorial
372 Prime Divisors Selection greedy math number theory Statement L 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} PROGRAMMING Tutorial (PDF)
39655 Strange Partition greedy math number theory Statement A Codeforces Round 694 (Div. 2) {1471} PROGRAMMING 500.0 Codeforces Round #694 Editorial
41589 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
34380 Add and Divide brute force greedy math ternary search Statement A Codeforces Round 701 (Div. 2) {1485} PROGRAMMING 500.0 Editorial of Codeforces Round #701 (Div. 2) 1000
18558 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
17942 Diamond Miner geometry greedy math sortings Statement A Codeforces Round 706 (Div. 1) {1495} PROGRAMMING 500.0 Codeforces Round #706 Editorial
9153 Square-free division (easy version) data structures dp greedy math number theory Statement E1 Codeforces Round 708 (Div. 2) {1497} PROGRAMMING 1500.0 Codeforces Round #708 Editorial 1700
1925 Square-free division (hard version) data structures dp greedy hashing math number theory Statement E2 Codeforces Round 708 (Div. 2) {1497} PROGRAMMING 1500.0 Codeforces Round #708 Editorial 2500
3721 Triangular Paths constructive algorithms greedy math shortest paths sortings Statement F Codeforces Round 710 (Div. 3) {1506} PROGRAMMING Editorial
6711 Binary Literature constructive algorithms greedy implementation math strings two pointers Statement A Codeforces Round 715 (Div. 1) {1508} PROGRAMMING 750.0 Codeforces Round #715 Editorial
596 Is It Rated? greedy interactive math probabilities Statement I 2020-2021 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1510} PROGRAMMING nerc-2020-offline-tutorial.pdf
34362 Array Reodering brute force greedy math number theory sortings Statement B Educational Codeforces Round 110 (Rated for Div. 2) {1535} PROGRAMMING 91481
5271 Gift Set binary search geometry greedy math ternary search Statement G Codeforces Round 725 (Div. 3) {1538} PROGRAMMING Codeforces Round #725 (Div. 3) Editorial
42437 Exciting Bets greedy math number theory Statement A Codeforces Round 730 (Div. 2) {1543} PROGRAMMING 500.0 Codeforces Round #730 (Div. 2) Editorial
19539 Make a Power of Two greedy math strings Statement D Codeforces Round 739 (Div. 3) {1560} PROGRAMMING 94009 1300
5393 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
17795 Two Arrays greedy math sortings Statement C Technocup 2022 - Elimination Round 2 {1584} PROGRAMMING 1000.0 Editorial for Technocup 2022 — Elimination Round 2 and Codeforces Round #755 (Div. 1, Div. 2) 900
1932 Bored Bakry bitmasks greedy math two pointers Statement E Codeforces Round 746 (Div. 2) {1592} PROGRAMMING 2500.0 95583
23862 Gamer Hemose greedy math sortings Statement A Codeforces Round 746 (Div. 2) {1592} PROGRAMMING 500.0 95583
42183 Make it Divisible by 25 dp greedy math math Statement B Codeforces Round 748 (Div. 3) {1593} PROGRAMMING Editorial for Codeforces Round #748 (Div.3)
29359 Make Them Equal brute force greedy math strings Statement C Codeforces Round 747 (Div. 2) {1594} PROGRAMMING 1500.0 95525 1200
2279 Extreme Extension dp greedy math number theory Statement C Codeforces Round 752 (Div. 1) {1603} PROGRAMMING 1750.0 Editorial of Codeforces Round #752 2300
18212 Blue-Red Permutation greedy math sortings Statement D Codeforces Round 753 (Div. 3) {1607} PROGRAMMING Codeforces Round #753 (Div. 3) Editorial
19013 Divide and Multiply greedy implementation math number theory Statement A Deltix Round, Autumn 2021 (open for everyone, rated, Div. 1 + Div. 2) {1609} PROGRAMMING 500.0 Deltix Round, Autumn 2021. Editorial 900
2859 Messages greedy math probabilities sortings Statement E Educational Codeforces Round 117 (Rated for Div. 2) {1612} PROGRAMMING 97164
1710 Purple Crayon dp games greedy math trees Statement E Codeforces Global Round 18 {1615} PROGRAMMING 2750.0 Global Round 18 Editorial
1946 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
10281 MEX and Increments constructive algorithms data structures dp greedy math sortings Statement E Codeforces Round 762 (Div. 3) {1619} PROGRAMMING Tutorial
7304 BA-String bitmasks brute force dp greedy implementation math shortest paths Statement C Educational Codeforces Round 119 (Rated for Div. 2) {1620} PROGRAMMING 98061
25374 GCD Arrays greedy math number theory Statement B Codeforces Round 767 (Div. 2) {1629} PROGRAMMING 750.0 Editorial of Codeforces Round #767
5380 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
4484 Rescheduling the Exam binary search data structures greedy implementation math sortings Statement E Codeforces Round 776 (Div. 3) {1650} PROGRAMMING 100712
1236 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
4466 Reverse Sort Sum constructive algorithms data structures greedy implementation math two pointers Statement D Codeforces Round 782 (Div. 2) {1659} PROGRAMMING 2000.0 Codeforces Round #782 (Div. 2) Editorial
17977 Social Distance greedy math sortings Statement B Codeforces Round 783 (Div. 2) {1668} PROGRAMMING 500.0 Codeforces Round #783 Editorial 900
34933 Most Similar Words brute force greedy implementation implementation math strings Statement C Codeforces Round 790 (Div. 4) {1676} PROGRAMMING Codeforces Round #790 (Div. 4) Editorial
61365 Equal Candies greedy math sortings Statement B Codeforces Round 790 (Div. 4) {1676} PROGRAMMING Codeforces Round #790 (Div. 4) Editorial
41968 AvtoBus brute force greedy math number theory Statement A Codeforces Round 791 (Div. 2) {1679} PROGRAMMING 500.0 Codeforces Round #791 (Div. 2) Editorial
759 Unordered Swaps constructive algorithms dfs and similar graphs greedy math sortings Statement E Codeforces Round 793 (Div. 2) {1682} PROGRAMMING 2500.0 Codeforces Round #793 (Div. 2) Editorial
17107 Price Maximization binary search greedy math two pointers Statement E Codeforces Round 797 (Div. 3) {1690} PROGRAMMING Codeforces Round #797 (Div. 3) Editorial 1500
17327 Sum of Substrings brute force constructive algorithms greedy math strings Statement C CodeCraft-22 and Codeforces Round 795 (Div. 2) {1691} PROGRAMMING 1250.0 Editorial for CodeCraft-22 and Codeforces Round #795 (Div. 2)
204 Maximum Product? brute force combinatorics dp greedy math two pointers Statement H Codeforces Global Round 21 {1696} PROGRAMMING 4000.0 Editorial of Codeforces Global Round 21
6307 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
9551 Equate Multisets constructive algorithms data structures graph matchings greedy math number theory Statement F Codeforces Round 805 (Div. 3) {1702} PROGRAMMING 104763
3500 Fibonacci Strings brute force data structures greedy implementation math number theory Statement B Codeforces Round 814 (Div. 1) {1718} PROGRAMMING 1250.0 Codeforces Round #814 (Div. 1, Div. 2) Editorial
1867 Tonya and Burenka-179 brute force data structures greedy math number theory Statement C Codeforces Round 814 (Div. 1) {1718} PROGRAMMING 1250.0 Codeforces Round #814 (Div. 1, Div. 2) Editorial
5951 Burenka and Traditions (hard version) data structures dp greedy math two pointers Statement A2 Codeforces Round 814 (Div. 1) {1718} PROGRAMMING 500.0 Codeforces Round #814 (Div. 1, Div. 2) Editorial
424 Permutation for Burenka greedy math trees Statement D Codeforces Round 814 (Div. 1) {1718} PROGRAMMING 2250.0 Codeforces Round #814 (Div. 1, Div. 2) Editorial
7757 Maximum AND bitmasks brute force divide and conquer greedy math sortings Statement D Educational Codeforces Round 134 (Rated for Div. 2) {1721} PROGRAMMING 106416
2042 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
18012 Minimum Notation data structures greedy math sortings Statement C Codeforces Round 823 (Div. 2) {1730} PROGRAMMING 1500.0 Codeforces Round #823 — editorial 1200
17755 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
3511 Graph Cost dp greedy math number theory Statement E Codeforces Round 841 (Div. 2) and Divide by Zero 2022 {1731} PROGRAMMING 2000.0 Codeforces Round #841 (Div. 2) and Divide By Zero 2022 Editorial
22458 Select Three Sticks greedy math sortings Statement A Codeforces Round 822 (Div. 2) {1734} PROGRAMMING 500.0 Codeforces Round #822 (Div.2) Editorial
19454 Minimize the Thickness brute force greedy math two pointers Statement C Codeforces Round 826 (Div. 3) {1741} PROGRAMMING 107908
24690 Divisibility by 2^n greedy math sortings Statement D Codeforces Round 828 (Div. 3) {1744} PROGRAMMING Codeforces Round #828 (Div. 3) Editorial
4534 All Possible Digits binary search data structures greedy math number theory Statement F Codeforces Round 834 (Div. 3) {1759} PROGRAMMING 109254
19507 Thermostat greedy math shortest paths Statement C Codeforces Round 834 (Div. 3) {1759} PROGRAMMING 109254
20647 Divide and Conquer greedy math number theory Statement A Codeforces Round 838 (Div. 2) {1762} PROGRAMMING 500.0 Codeforces Round #838 (Div. 2) Editorial
10848 Lucky Chains brute force dp greedy math number theory Statement D Educational Codeforces Round 139 (Rated for Div. 2) {1766} PROGRAMMING 110066
31149 Greatest Convex greedy math number theory Statement A Codeforces Round 842 (Div. 2) {1768} PROGRAMMING 500.0 Codeforces Round #842 (Div. 2) Editorial
1618 Gaining Rating binary search greedy math sortings Statement G Codeforces Round 839 (Div. 3) {1772} PROGRAMMING 110313
24113 Hall of Fame constructive algorithms greedy math strings Statement A Hello 2023 {1779} PROGRAMMING 500.0
26868 GCD Partition brute force greedy math number theory Statement B Codeforces Round 846 (Div. 2) {1780} PROGRAMMING 1000.0 111841
15124 Number Factorization greedy math number theory Statement B TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) {1787} PROGRAMMING 1000.0 TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) Editorial
4048 Timofey and Black-White Tree brute force dfs and similar divide and conquer graphs greedy math shortest paths trees Statement F Codeforces Round 847 (Div. 3) {1790} PROGRAMMING 111948
22913 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
9516 Candy Store greedy math number theory Statement C Codeforces Round 860 (Div. 2) {1798} PROGRAMMING 1250.0 Editorial of Codeforces Round 860 (Div. 2) 1700
13931 Pull Your Luck brute force greedy math number theory Statement C Nebius Welcome Round (Div. 1 + Div. 2) {1804} PROGRAMMING 1000.0 Nebius Welcome Round Editorial
474 GCD Master (easy version) greedy math number theory sortings Statement F1 Codeforces Round 858 (Div. 2) {1806} PROGRAMMING 2500.0 Codeforces Round #858 (Div. 2) Editorial
479 GCD Master (hard version) greedy math sortings Statement F2 Codeforces Round 858 (Div. 2) {1806} PROGRAMMING 1500.0 Codeforces Round #858 (Div. 2) Editorial
28856 Subsequence Addition (Hard Version) dp greedy implementation math sortings Statement G2 Codeforces Round 859 (Div. 4) {1807} PROGRAMMING 114143
34841 Insert Digit greedy math strings Statement A Codeforces Round 863 (Div. 3) {1811} PROGRAMMING 114788
12543 Search in Parallel greedy math sortings Statement C Educational Codeforces Round 146 (Rated for Div. 2) {1814} PROGRAMMING Educational Codeforces Round 146 Editorial
2733 Rearrange Brackets dp greedy math sortings Statement E Educational Codeforces Round 147 (Rated for Div. 2) {1821} PROGRAMMING 115296
12483 Making Anti-Palindromes greedy math strings Statement E Codeforces Round 867 (Div. 3) {1822} PROGRAMMING Codeforces Round #867 (Div. 3) Editorial
4333 Unique Palindromes binary search constructive algorithms greedy math strings Statement D Codeforces Round 868 (Div. 2) {1823} PROGRAMMING 2000.0 115465
13928 Strongly Composite greedy math number theory Statement C Codeforces Round 868 (Div. 2) {1823} PROGRAMMING 1250.0 115465
15793 Dreaming of Freedom greedy math number theory Statement C Codeforces Round 870 (Div. 2) {1826} PROGRAMMING 1500.0 Codeforces Round #870 (Div. 2) Editorial 1300
1095 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
9166 Ranom Numbers brute force dp greedy math strings Statement C Educational Codeforces Round 150 (Rated for Div. 2) {1841} PROGRAMMING 117262
6429 Omsk Metro (simple version) data structures dfs and similar dp greedy math trees Statement F1 Codeforces Round 881 (Div. 3) {1843} PROGRAMMING Codeforces Round #881 (Div. 3) Editorial
1037 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
25500 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
7223 Vika and Price Tags greedy math number theory Statement C Codeforces Round 885 (Div. 2) {1848} PROGRAMMING 1500.0 Codeforces Round #885 (Div.2) Editorial
7693 Lisa and the Martians bitmasks data structures greedy math sortings strings trees Statement F Codeforces Round 888 (Div. 3) {1851} PROGRAMMING 118667
46886 Longest Divisors Interval brute force combinatorics greedy math number theory Statement B Codeforces Round 889 (Div. 2) {1855} PROGRAMMING 1000.0 Editorial of Codeforces Round 889 (Div. 1 + Div. 2)
13120 The Walkway brute force greedy implementation math number theory Statement B Codeforces Round 893 (Div. 2) {1858} PROGRAMMING 1250.0 Codeforces Round #893 (Div. 2) Editorial 1500
45674 Olya and Game with Arrays constructive algorithms greedy math sortings Statement B Codeforces Round 892 (Div. 2) {1859} PROGRAMMING 1000.0 Video solutions from Geothermal.
16874 Split Sort greedy math sortings Statement B Pinely Round 2 (Div. 1 + Div. 2) {1863} PROGRAMMING 750.0
20012 Money Trees greedy greedy greedy math two pointers Statement F Codeforces Round 898 (Div. 4) {1873} PROGRAMMING 120634
2209 Jellyfish and EVA dp graphs greedy math probabilities Statement C Codeforces Round 901 (Div. 1) {1874} PROGRAMMING 1500.0 Codeforces Round 901 (Div. 1, Div. 2) Editorial
13992 Jellyfish and Green Apple bitmasks greedy math number theory Statement C Codeforces Round 901 (Div. 2) {1875} PROGRAMMING 1000.0 Codeforces Round 901 (Div. 1, Div. 2) Editorial
14817 Haunted House greedy math two pointers Statement B Codeforces Round 904 (Div. 2) {1884} PROGRAMMING 1000.0 Codeforces Round #904 (Div. 2) Editorial
1087 Brukhovich and Exams brute force greedy math sortings Statement E Codeforces Round 907 (Div. 2) {1891} PROGRAMMING 2000.0
21677 Points and Minimum Distance greedy math sortings Statement B Educational Codeforces Round 157 (Rated for Div. 2) {1895} PROGRAMMING Educational Codeforces Round 157 Editorial
17294 Insert and Equalize brute force constructive algorithms greedy math number theory Statement C Educational Codeforces Round 159 (Rated for Div. 2) {1902} PROGRAMMING Educational Codeforces Round 159 Editorial
23336 Removal of Unattractive Pairs constructive algorithms greedy math strings Statement C Codeforces Round 913 (Div. 3) {1907} PROGRAMMING Codeforces Round 913 (Div. 3) Editorial
13310 Heavy Intervals constructive algorithms data structures dsu greedy math sortings Statement C Pinely Round 3 (Div. 1 + Div. 2) {1909} PROGRAMMING 1500.0 Editorial of Pinely Round 3 (Div. 1 + Div. 2)
5164 Split Plus K greedy math number theory Statement D Pinely Round 3 (Div. 1 + Div. 2) {1909} PROGRAMMING 2000.0 Editorial of Pinely Round 3 (Div. 1 + Div. 2)
29720 Satisfying Constraints brute force greedy math schedules Statement A Codeforces Round 919 (Div. 2) {1920} PROGRAMMING 500.0 Editorial for Codeforces Round #919 (Div. 2)
23382 A Balanced Problemset? brute force greedy math number theory Statement B Codeforces Round 921 (Div. 2) {1925} PROGRAMMING 1000.0 Codeforces Round 921 (Div. 1, Div. 2) Editorial
5216 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
2135 Modular Sequence constructive algorithms dp greedy implementation math number theory Statement E Codeforces Round 924 (Div. 2) {1928} PROGRAMMING 2250.0 Codeforces Round 924 Editorial
26755 Anna and the Valentine's Day Gift games greedy math sortings Statement E Codeforces Round 925 (Div. 3) {1931} PROGRAMMING 125878
42313 Turtle Puzzle: Rearrange and Negate greedy math sortings Statement A Codeforces Round 929 (Div. 3) {1933} PROGRAMMING Codeforces Round 929 (Div. 3) Editorial
11406 0, 1, 2, Tree! greedy math trees Statement F Codeforces Round 937 (Div. 4) {1950} PROGRAMMING Codeforces Round 937 (Div. 4) Editorial
13866 Ticket Hoarding greedy math sortings Statement C Codeforces Global Round 25 {1951} PROGRAMMING 1500.0 Codeforces Global Round 25 Editorial
8239 Colored Balls combinatorics dp greedy math sortings Statement D Educational Codeforces Round 164 (Rated for Div. 2) {1954} PROGRAMMING Educational Codeforces Round 164 Editorial
3005 Chain Reaction data structures dsu greedy implementation math number theory Statement E Educational Codeforces Round 164 (Rated for Div. 2) {1954} PROGRAMMING Educational Codeforces Round 164 Editorial
17009 Everything Nim games greedy math sortings Statement A Codeforces Round 941 (Div. 1) {1965} PROGRAMMING 500.0 Codeforces Round #941 (Div. 1, Div. 2) Editorial 1400
15121 Permutation Counting binary search greedy implementation math sortings Statement A Codeforces Round 942 (Div. 1) {1967} PROGRAMMING 750.0 Tutorial 1400
5755 Shop Game data structures greedy math sortings Statement D Educational Codeforces Round 165 (Rated for Div. 2) {1969} PROGRAMMING Educational Codeforces Round 165 Editorial 1900
16966 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
9924 Cat, Fox and Double Maximum constructive algorithms greedy implementation math sortings Statement C Codeforces Round 945 (Div. 2) {1973} PROGRAMMING 1500.0 Editorial for Codeforces Round #945 (Div. 2) 1700
21222 378QAQ and Mocha's Array brute force greedy math sortings Statement B Codeforces Round 947 (Div. 1 + Div. 2) {1975} PROGRAMMING 500.0 editorial_zh.pdf 1000
345 Zimpha Fan Club fft greedy math strings Statement G Codeforces Round 947 (Div. 1 + Div. 2) {1975} PROGRAMMING 3000.0 editorial_zh.pdf 3000
1318 Splittable Permutations combinatorics data structures dfs and similar greedy math trees Statement E Educational Codeforces Round 166 (Rated for Div. 2) {1976} PROGRAMMING Educational Codeforces Round 166 Editorial
8115 Nikita and LCM brute force data structures dp greedy math number theory sortings Statement C Codeforces Round 948 (Div. 2) {1977} PROGRAMMING 1750.0 129858 1900
25520 New Bakery binary search greedy math ternary search Statement B Codeforces Round 953 (Div. 2) {1978} PROGRAMMING 750.0 130527
17550 GCD-sequence greedy implementation math math number theory number theory Statement D Codeforces Round 950 (Div. 3) {1980} PROGRAMMING 130135
27600 Soccer greedy implementation math sortings Statement A Codeforces Round 955 (Div. 2, with prizes from NEAR!) {1982} PROGRAMMING 500.0 130839
11338 Swap Dilemma constructive algorithms divide and conquer greedy math sortings Statement D Codeforces Round 956 (Div. 2) and ByteRace 2024 {1983} PROGRAMMING 1750.0
7189 Smithing Skill brute force dp greedy math sortings two pointers Statement D Educational Codeforces Round 167 (Rated for Div. 2) {1989} PROGRAMMING Educational Codeforces Round 167 Editorial
7952 Prime XOR Coloring bitmasks constructive algorithms graphs greedy math number theory Statement D Pinely Round 4 (Div. 1 + Div. 2) {1991} PROGRAMMING 1500.0 Video Tutorial
2786 Triangle Formation brute force greedy math sortings Statement F Pinely Round 4 (Div. 1 + Div. 2) {1991} PROGRAMMING 2500.0 Video Tutorial
49687 Only Pluses brute force constructive algorithms greedy math sortings Statement A Codeforces Round 957 (Div. 3) {1992} PROGRAMMING Shayan's Video Tutorial
38225 Angry Monk greedy math sortings Statement B Codeforces Round 957 (Div. 3) {1992} PROGRAMMING Shayan's Video Tutorial
5636 Wooden Game bitmasks greedy math trees Statement E Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2) {1994} PROGRAMMING 2000.0 Video Tutorial
7621 Funny Game constructive algorithms dsu graphs greedy math number theory Statement D Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2) {1994} PROGRAMMING 2000.0 Video Tutorial
10244 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
10386 Squaring brute force constructive algorithms data structures greedy implementation math number theory Statement C Codeforces Round 961 (Div. 2) {1995} PROGRAMMING 1750.0 Video Tutorial
21982 The Strict Teacher (Hard Version) binary search greedy math sortings Statement B2 Codeforces Round 972 (Div. 2) {2005} PROGRAMMING 500.0 Discussion stream (With Hints)