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11611 Salem and Sticks brute force implementation Statement A Codeforces Round 533 (Div. 2) {1105} PROGRAMMING Tutorial 1100
10592 Zuhair and Strings brute force implementation strings Statement B Codeforces Round 533 (Div. 2) {1105} PROGRAMMING Tutorial 1200
4456 Kilani and the Game dfs and similar graphs implementation shortest paths Statement D Codeforces Round 533 (Div. 2) {1105} PROGRAMMING Tutorial 1900
16086 Lunar New Year and Number Division greedy implementation math sortings Statement C Codeforces Round 536 (Div. 2) {1106} PROGRAMMING Tutorial 1000
7015 Lunar New Year and Food Ordering data structures implementation Statement B Codeforces Round 536 (Div. 2) {1106} PROGRAMMING Tutorial 1500
12943 Lunar New Year and Cross Counting implementation Statement A Codeforces Round 536 (Div. 2) {1106} PROGRAMMING Tutorial 800
3909 Compression dp implementation math number theory Statement D Educational Codeforces Round 59 (Rated for Div. 2) {1107} PROGRAMMING Educational Codeforces Round 59 Editorial 1800
4958 Array and Segments (Easy version) brute force greedy implementation Statement E1 Codeforces Round 535 (Div. 3) {1108} PROGRAMMING 64751 1800
2580 Array and Segments (Hard version) data structures implementation Statement E2 Codeforces Round 535 (Div. 3) {1108} PROGRAMMING 64751 2300
23473 Two distinct points implementation Statement A Codeforces Round 535 (Div. 3) {1108} PROGRAMMING 64751 800
9112 Sasha and a Bit of Relax dp implementation Statement A Codeforces Round 539 (Div. 1) {1109} PROGRAMMING Codeforces Round #539 Editorial 1600
318 Sasha and a Patient Friend binary search data structures implementation Statement C Codeforces Round 539 (Div. 1) {1109} PROGRAMMING Codeforces Round #539 Editorial 2800
18216 Superhero Transformation implementation strings Statement A CodeCraft-19 and Codeforces Round 537 (Div. 2) {1111} PROGRAMMING CodeCraft-19 and Codeforces Round #537 (Div. 2) Editorial 1000
6568 Average Superhero Gang Power brute force implementation math Statement B CodeCraft-19 and Codeforces Round 537 (Div. 2) {1111} PROGRAMMING CodeCraft-19 and Codeforces Round #537 (Div. 2) Editorial 1600
7964 Trailing Loves (or L'oeufs?) brute force implementation math number theory Statement C Codeforces Round 538 (Div. 2) {1114} PROGRAMMING Codeforces Round #538 (Div. 2) Editorial 1700
19805 Got Any Grapes? brute force greedy implementation Statement A Codeforces Round 538 (Div. 2) {1114} PROGRAMMING Codeforces Round #538 (Div. 2) Editorial 800
11507 Best Subsegment implementation math Statement A Educational Codeforces Round 60 (Rated for Div. 2) {1117} PROGRAMMING 65365 1100
13340 Tanya and Candies implementation Statement B Codeforces Round 540 (Div. 3) {1118} PROGRAMMING 65396 1300
6118 Palindromic Matrix constructive algorithms implementation Statement C Codeforces Round 540 (Div. 3) {1118} PROGRAMMING 65396 1700
4480 Yet Another Ball Problem constructive algorithms implementation Statement E Codeforces Round 540 (Div. 3) {1118} PROGRAMMING 65396 2000
11651 Ilya and a Colorful Walk greedy implementation Statement A Codeforces Global Round 2 {1119} PROGRAMMING Codeforces Global Round 2 Editorial 1100
7200 Ramesses and Corner Inversion constructive algorithms greedy implementation math Statement C Codeforces Global Round 2 {1119} PROGRAMMING Codeforces Global Round 2 Editorial 1500
626 Get Ready for the Battle constructive algorithms implementation Statement G Codeforces Global Round 2 {1119} PROGRAMMING Codeforces Global Round 2 Editorial 3000
1751 Diana and Liana greedy implementation two pointers Statement A Codeforces Round 543 (Div. 1, based on Technocup 2019 Final Round) {1120} PROGRAMMING Разбор задач финала Технокубка 2019 и Codeforces Round #543 2200
481 Once in a casino constructive algorithms greedy implementation math Statement B Codeforces Round 543 (Div. 1, based on Technocup 2019 Final Round) {1120} PROGRAMMING Разбор задач финала Технокубка 2019 и Codeforces Round #543 2700
7499 Technogoblet of Fire implementation sortings Statement A Codeforces Round 543 (Div. 2, based on Technocup 2019 Final Round) {1121} PROGRAMMING Codeforces Round #543 and Technocup 2019 Final Round Editorial 1100
10140 Mike and Children brute force implementation Statement B Codeforces Round 543 (Div. 2, based on Technocup 2019 Final Round) {1121} PROGRAMMING Codeforces Round #543 and Technocup 2019 Final Round Editorial 1200
2135 System Testing implementation Statement C Codeforces Round 543 (Div. 2, based on Technocup 2019 Final Round) {1121} PROGRAMMING Codeforces Round #543 and Technocup 2019 Final Round Editorial 1900
2346 Wrong Answer constructive algorithms Statement B Codeforces Round 542 [Alex Lopashev Thanks-Round] (Div. 1) {1129} PROGRAMMING 65520 2200
12300 Be Positive implementation Statement A Codeforces Round 542 [Alex Lopashev Thanks-Round] (Div. 2) {1130} PROGRAMMING 65520 900
10422 Draw! greedy implementation Statement B Codeforces Round 541 (Div. 2) {1131} PROGRAMMING Codeforces Round #541 Editorial 1300
10232 Regular Bracket Sequence greedy implementation Statement A Educational Codeforces Round 61 (Rated for Div. 2) {1132} PROGRAMMING T 1100
19933 Middle of the Contest implementation Statement A Codeforces Round 544 (Div. 3) {1133} PROGRAMMING Codeforces Round #544 (Div. 3) Editorial 1000
17301 Nastya Is Reading a Book implementation Statement A Codeforces Round 546 (Div. 2) {1136} PROGRAMMING Editorial of Round #546(Div.2) 700
4694 Skyscrapers implementation sortings Statement A Codeforces Round 545 (Div. 1) {1137} PROGRAMMING Codeforces Round #545 – Editorial 1600
1367 Museums Tour dp graphs implementation Statement C Codeforces Round 545 (Div. 1) {1137} PROGRAMMING Codeforces Round #545 – Editorial 2800
22540 Sushi for Two binary search greedy implementation Statement A Codeforces Round 545 (Div. 2) {1138} PROGRAMMING Codeforces Round #545 – Editorial 900
19709 Chocolates greedy implementation Statement B Codeforces Round 548 (Div. 2) {1139} PROGRAMMING Codeforces Round #548 Editorial 1100
17695 Even Substrings implementation strings Statement A Codeforces Round 548 (Div. 2) {1139} PROGRAMMING Codeforces Round #548 Editorial 700
12907 Detective Book implementation Statement A Educational Codeforces Round 62 (Rated for Div. 2) {1140} PROGRAMMING Educational Codeforces Round 62 Editorial 1000
11767 Good String implementation strings Statement B Educational Codeforces Round 62 (Rated for Div. 2) {1140} PROGRAMMING Educational Codeforces Round 62 Editorial 1200
23299 Maximal Continuous Rest implementation Statement B Codeforces Round 547 (Div. 3) {1141} PROGRAMMING 66062 1000
40258 Game 23 implementation math Statement A Codeforces Round 547 (Div. 3) {1141} PROGRAMMING 66062 1000
9022 Colored Boots greedy implementation Statement D Codeforces Round 547 (Div. 3) {1141} PROGRAMMING 66062 1500
14130 The Doors implementation Statement A Codeforces Round 549 (Div. 2) {1143} PROGRAMMING Codeforces Round #549 Editorial 700
18426 Parity Alternated Deletions greedy implementation sortings Statement B Codeforces Round 550 (Div. 3) {1144} PROGRAMMING 66307 1000
22185 Diverse Strings implementation strings Statement A Codeforces Round 550 (Div. 3) {1144} PROGRAMMING 66307 900
9346 Thanos Sort implementation Statement A April Fools Day Contest 2019 {1145} PROGRAMMING 66327
1198 Pigeon d'Or implementation Statement D April Fools Day Contest 2019 {1145} PROGRAMMING 66327
9373 Hate "A" implementation strings Statement B Forethought Future Cup - Elimination Round {1146} PROGRAMMING 66639 1100
1069 Hot is Cold bitmasks data structures divide and conquer implementation Statement E Forethought Future Cup - Elimination Round {1146} PROGRAMMING 66639 2400
23786 Love "A" implementation strings Statement A Forethought Future Cup - Elimination Round {1146} PROGRAMMING 66639 600
2068 Three Religions dp implementation strings Statement B Codeforces Round 556 (Div. 1) {1149} PROGRAMMING 66783 2200
1712 Tree Generator™ data structures implementation trees Statement C Codeforces Round 556 (Div. 1) {1149} PROGRAMMING 66783 2900
11912 Tiling Challenge greedy implementation Statement B Codeforces Round 556 (Div. 2) {1150} PROGRAMMING 66783 1100
12618 Stock Arbitraging greedy implementation Statement A Codeforces Round 556 (Div. 2) {1150} PROGRAMMING 66783 900
16262 Neko Finds Grapes greedy implementation math Statement A Codeforces Round 554 (Div. 2) {1152} PROGRAMMING T 800
11598 Gourmet Cat implementation math Statement C Codeforces Round 552 (Div. 3) {1154} PROGRAMMING Codeforces Round #552 (Div. 3) Editorial 1400
7045 Two Teams data structures implementation sortings Statement E Codeforces Round 552 (Div. 3) {1154} PROGRAMMING Codeforces Round #552 (Div. 3) Editorial 1800
27585 Reverse a Substring implementation sortings strings Statement A Educational Codeforces Round 63 (Rated for Div. 2) {1155} PROGRAMMING 66687 1000
12590 Game with Telephone Numbers games greedy implementation Statement B Educational Codeforces Round 63 (Rated for Div. 2) {1155} PROGRAMMING 66687 1200
6602 Ugly Pairs dfs and similar greedy implementation sortings strings Statement B Educational Codeforces Round 64 (Rated for Div. 2) {1156} PROGRAMMING 66827 1800
171 Optimizer graphs greedy hashing implementation Statement G Educational Codeforces Round 64 (Rated for Div. 2) {1156} PROGRAMMING 66827 3100
16625 Reachable Numbers implementation Statement A Codeforces Round 555 (Div. 3) {1157} PROGRAMMING 66737 1100
8490 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
7872 Expansion coefficient of the array implementation math Statement B Codeforces Round 559 (Div. 2) {1159} PROGRAMMING 66993 1300
13463 A pile of stones implementation math Statement A Codeforces Round 559 (Div. 2) {1159} PROGRAMMING 66993 800
8785 Zoning Restrictions Again implementation Statement A Codeforces Round 557 (Div. 2) [based on Forethought Future Cup - Final Round] {1162} PROGRAMMING Forethought Future Cup Final Round Tutorial 800
7357 Cat Party (Easy Edition) data structures implementation Statement B1 Codeforces Round 558 (Div. 2) {1163} PROGRAMMING 66943 1500
7682 Cat Party (Hard Edition) data structures implementation Statement B2 Codeforces Round 558 (Div. 2) {1163} PROGRAMMING 66943 1700
4002 Power Transmission (Hard Edition) data structures geometry implementation math Statement C2 Codeforces Round 558 (Div. 2) {1163} PROGRAMMING 66943 2000
14746 Remainder implementation math Statement A Codeforces Round 560 (Div. 3) {1165} PROGRAMMING Codeforces Round #560 (Div. 3) Editorial 1200
2490 Microtransactions (hard version) binary search greedy implementation Statement F2 Codeforces Round 560 (Div. 3) {1165} PROGRAMMING Codeforces Round #560 (Div. 3) Editorial 2400
493 Anagram Paths dp implementation trees Statement D Codeforces Round 562 (Div. 1) {1168} PROGRAMMING Codeforces Round #562 — Editorial 2900
12769 Circle Metro implementation math Statement A Codeforces Round 562 (Div. 2) {1169} PROGRAMMING Codeforces Round #562 — Editorial 1000
10799 Pairs graphs implementation Statement B Codeforces Round 562 (Div. 2) {1169} PROGRAMMING Codeforces Round #562 — Editorial 1500
532 Decoding of Integer Sequences *special data structures implementation Statement D Kotlin Heroes: Episode 1 {1170} PROGRAMMING Kotlin Heroes Editorial
1151 Bad Days *special implementation Statement B Kotlin Heroes: Episode 1 {1170} PROGRAMMING Kotlin Heroes Editorial
836 Minus and Minus Give Plus *special implementation strings Statement C Kotlin Heroes: Episode 1 {1170} PROGRAMMING Kotlin Heroes Editorial
5192 Nauuo and Cards greedy implementation Statement A Codeforces Round 564 (Div. 1) {1172} PROGRAMMING Codeforces Round #564 Editorial 1800
2045 Ehab and the Big Finale constructive algorithms divide and conquer graphs implementation interactive trees Statement F Codeforces Round 563 (Div. 2) {1174} PROGRAMMING Codeforces round #563 editorial 2300
19917 From Hero to Zero implementation math Statement A Educational Codeforces Round 66 (Rated for Div. 2) {1175} PROGRAMMING Editorial 1000
12600 Catch Overflow! data structures expression parsing implementation Statement B Educational Codeforces Round 66 (Rated for Div. 2) {1175} PROGRAMMING Editorial 1600
4700 Minimal Segment Cover data structures dfs and similar divide and conquer dp greedy implementation trees Statement E Educational Codeforces Round 66 (Rated for Div. 2) {1175} PROGRAMMING Editorial 2200
15197 Lose it! dp greedy implementation Statement C Codeforces Round 565 (Div. 3) {1176} PROGRAMMING 67598 1300
2354 Destroy it! dp implementation sortings Statement F Codeforces Round 565 (Div. 3) {1176} PROGRAMMING 67598 2500
25304 Divide it! brute force greedy implementation Statement A Codeforces Round 565 (Div. 3) {1176} PROGRAMMING 67598 800
6857 Digits Sequence (Easy Edition) implementation Statement A Testing Round 15 (Unrated) {1177} PROGRAMMING 1100
3082 Digits Sequence (Hard Edition) binary search divide and conquer implementation Statement B Testing Round 15 (Unrated) {1177} PROGRAMMING 1800
11970 Valeriy and Deque data structures implementation Statement A Codeforces Round 569 (Div. 1) {1179} PROGRAMMING Editorial of Round #569 1500
2518 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
10136 Nick and Array greedy implementation Statement B Codeforces Round 569 (Div. 2) {1180} PROGRAMMING Editorial of Round #569 1500
27661 Alex and a Rhombus dp implementation math Statement A Codeforces Round 569 (Div. 2) {1180} PROGRAMMING Editorial of Round #569 800
6647 Split a Number greedy implementation strings Statement B Codeforces Round 567 (Div. 2) {1181} PROGRAMMING Editorial of Codeforces Round #567 (based on All-Russian olympiad in the name of Keldysh) 1500
3411 Flag brute force combinatorics dp implementation Statement C Codeforces Round 567 (Div. 2) {1181} PROGRAMMING Editorial of Codeforces Round #567 (based on All-Russian olympiad in the name of Keldysh) 1900
2875 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
12070 Plus from Picture dfs and similar implementation strings Statement B Codeforces Round 566 (Div. 2) {1182} PROGRAMMING 67614 1300
1037 Complete Mirror constructive algorithms dfs and similar dp hashing implementation trees Statement D Codeforces Round 566 (Div. 2) {1182} PROGRAMMING 67614 2500
5494 Subsequences (easy version) dp graphs implementation shortest paths Statement E Codeforces Round 570 (Div. 3) {1183} PROGRAMMING Tutorial 2000
2717 Candy Box (hard version) greedy implementation sortings Statement G Codeforces Round 570 (Div. 3) {1183} PROGRAMMING Tutorial 2100
27173 Nearest Interesting Number implementation Statement A Codeforces Round 570 (Div. 3) {1183} PROGRAMMING Tutorial 900
2807 Parallel Universes (Easy) implementation Statement D1 Helvetic Coding Contest 2019 online mirror (teams allowed, unrated) {1184} PROGRAMMING helvetic-coding-contest-2019-editorial.pdf 1600
2955 Heidi and the Turing Test (Easy) implementation Statement C1 Helvetic Coding Contest 2019 online mirror (teams allowed, unrated) {1184} PROGRAMMING helvetic-coding-contest-2019-editorial.pdf 1700
14317 Email from Polycarp implementation strings Statement B Codeforces Round 568 (Div. 2) {1185} PROGRAMMING Editorial for Codeforces Round #568 (Div. 2) 1200
7077 Extra Element implementation math Statement D Codeforces Round 568 (Div. 2) {1185} PROGRAMMING Editorial for Codeforces Round #568 (Div. 2) 1700
2827 Polycarp and Snakes brute force implementation Statement E Codeforces Round 568 (Div. 2) {1185} PROGRAMMING Editorial for Codeforces Round #568 (Div. 2) 2000
6605 Vus the Cossack and Strings implementation math Statement C Codeforces Round 571 (Div. 2) {1186} PROGRAMMING E 1800
1185 Vus the Cossack and a Graph dfs and similar graphs greedy implementation Statement F Codeforces Round 571 (Div. 2) {1186} PROGRAMMING E 2300
753 Vus the Cossack and a Field divide and conquer implementation math Statement E Codeforces Round 571 (Div. 2) {1186} PROGRAMMING E 2500
42902 Vus the Cossack and a Contest implementation Statement A Codeforces Round 571 (Div. 2) {1186} PROGRAMMING E 600
12944 Letters Shop binary search implementation strings Statement B Educational Codeforces Round 67 (Rated for Div. 2) {1187} PROGRAMMING Разбор Educational Codeforces Round 67 1300
6808 Vasya And Array constructive algorithms greedy implementation Statement C Educational Codeforces Round 67 (Rated for Div. 2) {1187} PROGRAMMING Разбор Educational Codeforces Round 67 1800
1324 Add on a Tree: Revolution constructive algorithms dfs and similar implementation trees Statement A2 Codeforces Round 572 (Div. 1) {1188} PROGRAMMING Editorial of Codeforces Round #572 2500
11121 Candies! data structures dp implementation math Statement C Codeforces Round 572 (Div. 2) {1189} PROGRAMMING Editorial of Codeforces Round #572 1400
9836 Tokitsukaze and Discard Items implementation two pointers Statement A Codeforces Round 573 (Div. 1) {1190} PROGRAMMING E 1500
9890 Tokitsukaze and Mahjong brute force implementation Statement B Codeforces Round 573 (Div. 2) {1191} PROGRAMMING 68314 1200
10743 Yet Another Crosses Problem implementation Statement B Educational Codeforces Round 68 (Rated for Div. 2) {1194} PROGRAMMING Разбор Educational Codeforces Round 68 1300
14695 From S To T implementation strings Statement C Educational Codeforces Round 68 (Rated for Div. 2) {1194} PROGRAMMING Разбор Educational Codeforces Round 68 1300
9797 Robot Breakout implementation Statement C Codeforces Round 575 (Div. 3) {1196} PROGRAMMING Editorial 1500
11186 RGB Substring (easy version) implementation Statement D1 Codeforces Round 575 (Div. 3) {1196} PROGRAMMING Editorial 1500
10518 RGB Substring (hard version) data structures dp implementation two pointers Statement D2 Codeforces Round 575 (Div. 3) {1196} PROGRAMMING Editorial 1600
3929 Connected Component on a Chessboard constructive algorithms implementation Statement E Codeforces Round 575 (Div. 3) {1196} PROGRAMMING Editorial 1900
14563 Pillars greedy implementation Statement B Educational Codeforces Round 69 (Rated for Div. 2) {1197} PROGRAMMING E 1000
16457 City Day implementation Statement A Codeforces Round 576 (Div. 2) {1199} PROGRAMMING E 1000
21965 Hotelier brute force data structures implementation Statement A Codeforces Round 578 (Div. 2) {1200} PROGRAMMING Codeforces Round #578 (Div. 2) Editorial 1000
4413 White Lines brute force data structures dp implementation two pointers Statement D Codeforces Round 578 (Div. 2) {1200} PROGRAMMING Codeforces Round #578 (Div. 2) Editorial 1900
9649 Compress Words brute force hashing implementation string suffix structures strings Statement E Codeforces Round 578 (Div. 2) {1200} PROGRAMMING Codeforces Round #578 (Div. 2) Editorial 2000
1181 Graph Traveler brute force data structures dfs and similar dp graphs implementation math number theory Statement F Codeforces Round 578 (Div. 2) {1200} PROGRAMMING Codeforces Round #578 (Div. 2) Editorial 2500
2557 Treasure Hunting binary search dp greedy implementation Statement D Codeforces Round 577 (Div. 2) {1201} PROGRAMMING Codeforces Round #577 (Div 2) Editorial 2000
17128 Important Exam implementation strings Statement A Codeforces Round 577 (Div. 2) {1201} PROGRAMMING Codeforces Round #577 (Div 2) Editorial 900
2794 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
646 You Are Given Some Letters... binary search implementation math Statement F Educational Codeforces Round 70 (Rated for Div. 2) {1202} PROGRAMMING 68972 2800
17748 Circle of Students implementation Statement A Codeforces Round 579 (Div. 3) {1203} PROGRAMMING Codeforces Round #579 (Div. 3) Editorial 1100
25001 Common Divisors implementation math Statement C Codeforces Round 579 (Div. 3) {1203} PROGRAMMING Codeforces Round #579 (Div. 3) Editorial 1300
9582 Remove the Substring (easy version) greedy implementation Statement D1 Codeforces Round 579 (Div. 3) {1203} PROGRAMMING Codeforces Round #579 (Div. 3) Editorial 1600
8211 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
1282 Palindromic Paths implementation interactive Statement C Codeforces Round 580 (Div. 1) {1205} PROGRAMMING 69158 2500
29728 Make Product Equal One dp implementation Statement B Codeforces Round 580 (Div. 2) {1206} PROGRAMMING Editorial of Codeforces Round #580 900
13797 Square Filling constructive algorithms greedy implementation Statement B Educational Codeforces Round 71 (Rated for Div. 2) {1207} PROGRAMMING Educational Codeforces Round 71 Editorial 1200
6979 Remainder Problem brute force data structures implementation Statement F Educational Codeforces Round 71 (Rated for Div. 2) {1207} PROGRAMMING Educational Codeforces Round 71 Editorial 2100
23550 There Are Two Types Of Burgers brute force greedy implementation math Statement A Educational Codeforces Round 71 (Rated for Div. 2) {1207} PROGRAMMING Educational Codeforces Round 71 Editorial 700
11755 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
5599 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
2218 Let Them Slide data structures implementation Statement E Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2) {1208} PROGRAMMING 69357 2200
228 Red Blue Tree data structures implementation trees Statement H Manthan, Codefest 19 (open for everyone, rated, Div. 1 + Div. 2) {1208} PROGRAMMING 69357 3500
8531 Koala and Lights implementation math number theory Statement B Codeforces Round 584 - Dasha Code Championship - Elimination Round (rated, open for everyone, Div. 1 + Div. 2) {1209} PROGRAMMING 69791 1300
7889 Paint the Digits constructive algorithms greedy implementation Statement C Codeforces Round 584 - Dasha Code Championship - Elimination Round (rated, open for everyone, Div. 1 + Div. 2) {1209} PROGRAMMING 69791 1600
4055 Into Blocks (easy version) data structures dsu greedy implementation two pointers Statement G1 Codeforces Round 584 - Dasha Code Championship - Elimination Round (rated, open for everyone, Div. 1 + Div. 2) {1209} PROGRAMMING 69791 2000
12902 Paint the Numbers greedy implementation math Statement A Codeforces Round 584 - Dasha Code Championship - Elimination Round (rated, open for everyone, Div. 1 + Div. 2) {1209} PROGRAMMING 69791 900
1611 Three Problems *special implementation Statement A Kotlin Heroes: Episode 2 {1211} PROGRAMMING Kotlin Heroes: Episode 2 Editorial 1300
828 Traveling Around the Golden Ring of Berland *special implementation Statement B Kotlin Heroes: Episode 2 {1211} PROGRAMMING Kotlin Heroes: Episode 2 Editorial 1500
153 kotlinkotlinkotlinkotlin... *special graphs implementation strings Statement F Kotlin Heroes: Episode 2 {1211} PROGRAMMING Kotlin Heroes: Episode 2 Editorial 2400
32117 Bad Prices data structures implementation Statement B Codeforces Round 582 (Div. 3) {1213} PROGRAMMING Codeforces Round #582 (Div. 3) Editorial 1100
12161 Equalizing by Division (easy version) brute force implementation Statement D1 Codeforces Round 582 (Div. 3) {1213} PROGRAMMING Codeforces Round #582 (Div. 3) Editorial 1500
3087 Unstable String Sort data structures dfs and similar dsu graphs greedy implementation strings Statement F Codeforces Round 582 (Div. 3) {1213} PROGRAMMING Codeforces Round #582 (Div. 3) Editorial 2400
12231 Yellow Cards greedy implementation math Statement A Codeforces Round 585 (Div. 2) {1215} PROGRAMMING Codeforces Round #585 Editorial 1000
19199 The Number of Products combinatorics dp implementation Statement B Codeforces Round 585 (Div. 2) {1215} PROGRAMMING Codeforces Round #585 Editorial 1500
19846 Shooting greedy implementation sortings Statement B Codeforces Round 587 (Div. 3) {1216} PROGRAMMING Codeforces Round #587 (Div. 3) Editorial 1000
2099 Sum Queries? data structures greedy implementation math Statement E Educational Codeforces Round 72 (Rated for Div. 2) {1217} PROGRAMMING Educational Codeforces Round 72 Editorial 2300
2488 Periodic integer number implementation strings Statement C Bubble Cup 12 - Finals [Online Mirror, unrated, Div. 2] {1219} PROGRAMMING E 1700
839 Harvester implementation Statement G Bubble Cup 12 - Finals [Online Mirror, unrated, Div. 2] {1219} PROGRAMMING E 2000
33037 Cards implementation sortings strings Statement A Codeforces Round 586 (Div. 1 + Div. 2) {1220} PROGRAMMING Codeforces Round #586 Editorial 600
12573 TV Subscriptions (Easy Version) implementation Statement B1 Technocup 2020 - Elimination Round 2 {1225} PROGRAMMING 70898 1000
12288 TV Subscriptions (Hard Version) implementation two pointers Statement B2 Technocup 2020 - Elimination Round 2 {1225} PROGRAMMING 70898 1300
11913 Filling the Grid implementation math Statement B Codeforces Round 589 (Div. 2) {1228} PROGRAMMING 70162 1300
5458 Complete Tripartite brute force constructive algorithms graphs hashing implementation Statement D Codeforces Round 589 (Div. 2) {1228} PROGRAMMING 70162 1800
616 One Node is Gone constructive algorithms implementation trees Statement F Codeforces Round 589 (Div. 2) {1228} PROGRAMMING 70162 2700
23417 Distinct Digits brute force implementation Statement A Codeforces Round 589 (Div. 2) {1228} PROGRAMMING 70162 800
19704 Ania and Minimizing greedy implementation Statement B Codeforces Round 588 (Div. 2) {1230} PROGRAMMING 70008 1000
23026 Dawid and Bags of Candies brute force implementation Statement A Codeforces Round 588 (Div. 2) {1230} PROGRAMMING 70008 800
19878 Social Network (easy version) implementation Statement B1 Codeforces Round 590 (Div. 3) {1234} PROGRAMMING Codeforces Round #590 (Div. 3) Editorial 1000
18658 Social Network (hard version) data structures implementation Statement B2 Codeforces Round 590 (Div. 3) {1234} PROGRAMMING Codeforces Round #590 (Div. 3) Editorial 1200
13594 Pipes dp implementation Statement C Codeforces Round 590 (Div. 3) {1234} PROGRAMMING Codeforces Round #590 (Div. 3) Editorial 1400
10581 Labs constructive algorithms greedy implementation Statement C Codeforces Round 593 (Div. 2) {1236} PROGRAMMING 70654 1300
1763 Alice and the Doll brute force data structures greedy implementation Statement D Codeforces Round 593 (Div. 2) {1236} PROGRAMMING 70654 2100
22375 Balanced Rating Changes implementation math Statement A Codeforces Global Round 5 {1237} PROGRAMMING T 1100
4560 Balanced Removals (Harder) binary search constructive algorithms divide and conquer greedy implementation sortings Statement C2 Codeforces Global Round 5 {1237} PROGRAMMING T 1900
4859 Balanced Playlist binary search data structures implementation Statement D Codeforces Global Round 5 {1237} PROGRAMMING T 1900
1826 Queue in the Train data structures greedy implementation Statement C Codeforces Round 594 (Div. 1) {1239} PROGRAMMING Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) 2300
1155 The World Is Just a Programming Task (Hard Version) implementation Statement B Codeforces Round 594 (Div. 1) {1239} PROGRAMMING Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) 2500
1206 Turtle dp implementation Statement E Codeforces Round 594 (Div. 1) {1239} PROGRAMMING Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) 3100
319 Swiper, no swiping! graphs implementation Statement F Codeforces Round 594 (Div. 1) {1239} PROGRAMMING Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) 3400
16439 Maximum Square implementation Statement A Codeforces Round 599 (Div. 2) {1243} PROGRAMMING Codeforces Round #599 Editorial 800
17774 Rooms and Staircases brute force implementation Statement B Codeforces Round 592 (Div. 2) {1244} PROGRAMMING Codeforces Round #592 (Div. 2) Tutorial 1000
8384 Paint the Tree brute force constructive algorithms dp graphs implementation trees Statement D Codeforces Round 592 (Div. 2) {1244} PROGRAMMING Codeforces Round #592 (Div. 2) Tutorial 1700
1654 Chips constructive algorithms implementation Statement F Codeforces Round 592 (Div. 2) {1244} PROGRAMMING Codeforces Round #592 (Div. 2) Tutorial 2300
2559 The World Is Just a Programming Task (Easy Version) brute force dp greedy implementation Statement D1 Codeforces Round 594 (Div. 2) {1248} PROGRAMMING Editorial of Codeforces Round #594 (on the problems of Moscow Team Olympiad) 1900
16640 Good Numbers (easy version) brute force greedy implementation Statement C1 Codeforces Round 595 (Div. 3) {1249} PROGRAMMING Codeforces Round #595 (Div. 3) Editorial 1300
8434 Data Center brute force implementation Statement F 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} PROGRAMMING 1000
4445 Berstagram implementation Statement A 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} PROGRAMMING 1400
932 The Coronation graphs implementation Statement E 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} PROGRAMMING 2500
398 SmartGarden constructive algorithms divide and conquer Statement M 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} PROGRAMMING 2700
4008 Even Path data structures implementation Statement C 2019-2020 ICPC, Asia Jakarta Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1252} PROGRAMMING T 1600
2863 Twin Buildings greedy implementation Statement H 2019-2020 ICPC, Asia Jakarta Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1252} PROGRAMMING T 1900
19522 Single Push implementation Statement A Codeforces Round 600 (Div. 2) {1253} PROGRAMMING Editorial 1000
11744 Silly Mistake greedy implementation Statement B Codeforces Round 600 (Div. 2) {1253} PROGRAMMING Editorial 1400
5633 Feeding Chicken constructive algorithms greedy implementation Statement A Codeforces Round 601 (Div. 1) {1254} PROGRAMMING Codeforces Round #601 Editorial 1900
12644 Fridge Lockers graphs implementation Statement B Codeforces Round 601 (Div. 2) {1255} PROGRAMMING Codeforces Round #601 Editorial 1200
7280 League of Leesins constructive algorithms implementation Statement C Codeforces Round 601 (Div. 2) {1255} PROGRAMMING Codeforces Round #601 Editorial 1600
17330 Dominated Subarray greedy implementation sortings strings two pointers Statement C Educational Codeforces Round 76 (Rated for Div. 2) {1257} PROGRAMMING Educational Codeforces Round 76 Editorial 1200
11843 PIN Codes greedy implementation Statement B Codeforces Round 603 (Div. 2) {1263} PROGRAMMING Разбор Codeforces Round #603 (Div. 2) 1400
3058 Editor data structures implementation Statement E Codeforces Round 603 (Div. 2) {1263} PROGRAMMING Разбор Codeforces Round #603 (Div. 2) 2000
10478 Beautiful Regional Contest greedy implementation Statement A Codeforces Round 604 (Div. 1) {1264} PROGRAMMING 71995 1500
13643 Beautiful Numbers data structures implementation math two pointers Statement B Codeforces Round 604 (Div. 2) {1265} PROGRAMMING Codeforces Round #604 Editorial 1300
3904 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
2447 Spaceship Solitaire data structures greedy implementation Statement E Codeforces Global Round 6 {1266} PROGRAMMING Codeforces Global Round 6 Editorial 2100
3125 Just Arrange the Icons greedy implementation math Statement J 2019-2020 ICPC, NERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1267} PROGRAMMING nerc-2019-tutorial.pdf 1900
1074 Intriguing Selection brute force constructive algorithms implementation interactive sortings Statement I 2019-2020 ICPC, NERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1267} PROGRAMMING nerc-2019-tutorial.pdf 2700
9168 Long Beautiful Integer constructive algorithms greedy implementation strings Statement A Codeforces Round 609 (Div. 1) {1268} PROGRAMMING Codeforces Round #609 — Editorial 1700
11196 Shawarma Tent brute force geometry greedy implementation Statement C Codeforces Round 608 (Div. 2) {1271} PROGRAMMING 72247 1300
3456 Portals data structures dp greedy implementation sortings Statement D Codeforces Round 608 (Div. 2) {1271} PROGRAMMING 72247 2100
31262 Yet Another Broken Keyboard combinatorics dp implementation Statement C Codeforces Round 605 (Div. 3) {1272} PROGRAMMING Codeforces Round #605 (Div. 3) Editorial 1100
14731 Snow Walking Robot constructive algorithms greedy implementation Statement B Codeforces Round 605 (Div. 3) {1272} PROGRAMMING Codeforces Round #605 (Div. 3) Editorial 1200
14559 Happy Birthday, Polycarp! implementation Statement A Codeforces Round 606 (Div. 2, based on Technocup 2020 Elimination Round 4) {1277} PROGRAMMING Technocup 2020 — Elimination Round 4 + Codeforces Round 606: Editorial 1000
3284 Let's Play the Words? data structures hashing implementation math Statement D Codeforces Round 606 (Div. 2, based on Technocup 2020 Elimination Round 4) {1277} PROGRAMMING Technocup 2020 — Elimination Round 4 + Codeforces Round 606: Editorial 1800
18471 Shuffle Hashing brute force implementation strings Statement A Educational Codeforces Round 78 (Rated for Div. 2) {1278} PROGRAMMING Educational Codeforces Round 78 Editorial 1000
8675 Berry Jam data structures dp greedy implementation Statement C Educational Codeforces Round 78 (Rated for Div. 2) {1278} PROGRAMMING Educational Codeforces Round 78 Editorial 1600
14496 Verse For Santa binary search brute force implementation Statement B Educational Codeforces Round 79 (Rated for Div. 2) {1279} PROGRAMMING Educational Codeforces Round 79 Editorial 1300
12485 Stack of Presents data structures implementation Statement C Educational Codeforces Round 79 (Rated for Div. 2) {1279} PROGRAMMING Educational Codeforces Round 79 Editorial 1400
5874 Cut and Paste implementation math Statement A Codeforces Round 607 (Div. 1) {1280} PROGRAMMING Codeforces Round #607 Editorial 1700
4219 Beingawesomeism implementation math Statement B Codeforces Round 607 (Div. 1) {1280} PROGRAMMING Codeforces Round #607 Editorial 1800
18981 Suffix Three implementation Statement A Codeforces Round 607 (Div. 2) {1281} PROGRAMMING Codeforces Round #607 Editorial 600
15542 Temporarily unavailable implementation math Statement A Codeforces Round 610 (Div. 2) {1282} PROGRAMMING 72461 900
11572 New Year and Ascent Sequence binary search combinatorics data structures dp implementation sortings Statement B Hello 2020 {1284} PROGRAMMING Hello 2020 Editorial 1500
18611 New Year and Naming implementation strings Statement A Hello 2020 {1284} PROGRAMMING Hello 2020 Editorial 600
32226 Just Eat It! dp greedy implementation Statement B Codeforces Round 613 (Div. 2) {1285} PROGRAMMING Codeforces Round #613 (Div. 2) Editorial 1300
370 Harry The Potter brute force constructive algorithms dp fft implementation math Statement F Codeforces Round 612 (Div. 1) {1286} PROGRAMMING Codeforces Round #612 - Editorial 3200
9869 Hyperset brute force data structures implementation Statement B Codeforces Round 612 (Div. 2) {1287} PROGRAMMING Codeforces Round #612 - Editorial 1500
23025 Angry Students greedy implementation Statement A Codeforces Round 612 (Div. 2) {1287} PROGRAMMING Codeforces Round #612 - Editorial 800
9033 Mind Control brute force data structures implementation Statement A Codeforces Round 616 (Div. 1) {1290} PROGRAMMING 500.0 Codeforces Round #616 Editorial 1700
15512 Array Sharpening greedy implementation Statement B Codeforces Round 616 (Div. 2) {1291} PROGRAMMING 1000.0 Codeforces Round #616 Editorial 1300
13947 NEKO's Maze Game data structures dsu implementation Statement A Codeforces Round 614 (Div. 1) {1292} PROGRAMMING 500.0 Codeforces Round #614 Editorial 1400
6809 Aroma's Search brute force constructive algorithms geometry greedy implementation Statement B Codeforces Round 614 (Div. 1) {1292} PROGRAMMING 750.0 Codeforces Round #614 Editorial 1800
16229 ConneR and the A.R.C. Markland-N binary search brute force implementation Statement A Codeforces Round 614 (Div. 2) {1293} PROGRAMMING 500.0 Codeforces Round #614 Editorial 1100
23069 Collecting Packages implementation sortings Statement B Codeforces Round 615 (Div. 3) {1294} PROGRAMMING Codeforces Round #615 (Div. 3) Editorial 1200
12776 MEX maximizing data structures greedy implementation math Statement D Codeforces Round 615 (Div. 3) {1294} PROGRAMMING Codeforces Round #615 (Div. 3) Editorial 1600
5268 Obtain a Permutation greedy implementation math Statement E Codeforces Round 615 (Div. 3) {1294} PROGRAMMING Codeforces Round #615 (Div. 3) Editorial 2000
15796 Yet Another Walking Robot data structures implementation Statement C Codeforces Round 617 (Div. 3) {1296} PROGRAMMING Codeforces Round #617 (Div. 3) Editorial 1500
127 Movie Fan *special data structures greedy implementation sortings Statement F Kotlin Heroes: Episode 3 {1297} PROGRAMMING Kotlin Heroes: Episode 3 Editorial
958 Likes Display *special implementation Statement A Kotlin Heroes: Episode 3 {1297} PROGRAMMING Kotlin Heroes: Episode 3 Editorial
433 Cartoons *special implementation sortings Statement B Kotlin Heroes: Episode 3 {1297} PROGRAMMING Kotlin Heroes: Episode 3 Editorial
26240 Assigning to Classes greedy implementation sortings Statement B Codeforces Round 618 (Div. 2) {1300} PROGRAMMING 750.0 Codeforces Round #618 Editorial 1000
21734 Non-zero implementation math Statement A Codeforces Round 618 (Div. 2) {1300} PROGRAMMING 500.0 Codeforces Round #618 Editorial 700
4268 Time to Run constructive algorithms graphs implementation Statement D Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 1750.0 Codeforces Round #619 (Div. 2) Editorial 1900
1656 Nanosoft binary search data structures dp implementation Statement E Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 2500.0 Codeforces Round #619 (Div. 2) Editorial 2500
1442 Super Jaber dfs and similar graphs implementation shortest paths Statement F Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 2500.0 Codeforces Round #619 (Div. 2) Editorial 2700
20165 Three Strings implementation strings Statement A Codeforces Round 619 (Div. 2) {1301} PROGRAMMING 500.0 Codeforces Round #619 (Div. 2) Editorial 800
13037 Perfect Keyboard dfs and similar greedy implementation Statement C Educational Codeforces Round 82 (Rated for Div. 2) {1303} PROGRAMMING Educational Codeforces Round 82 1500
663 Number of Components dsu implementation Statement F Educational Codeforces Round 82 (Rated for Div. 2) {1303} PROGRAMMING Educational Codeforces Round 82 2800
37177 Erasing Zeroes implementation strings Statement A Educational Codeforces Round 82 (Rated for Div. 2) {1303} PROGRAMMING Educational Codeforces Round 82 700