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149 JS Minification greedy implementation Statement J 2018-2019 ICPC, NEERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1089} PROGRAMMING T 3300
11070 New Year and the Treasure Geolocation brute force constructive algorithms greedy implementation Statement B Good Bye 2018 {1091} PROGRAMMING Editorial 1200
1124 New Year and the Acquaintance Estimation binary search data structures graphs greedy implementation math sortings Statement E Good Bye 2018 {1091} PROGRAMMING Editorial 2400
5949 Great Vova Wall (Version 1) greedy implementation math Statement D1 Codeforces Round 527 (Div. 3) {1092} PROGRAMMING Codeforces Round #527 (Div. 3) Editorial 2100
19851 Find Divisible greedy implementation math Statement A Educational Codeforces Round 57 (Rated for Div. 2) {1096} PROGRAMMING Разбор Educational Codeforces Round 57 800
8868 Yuhao and a Parenthesis greedy implementation Statement C Hello 2019 {1097} PROGRAMMING 64310 1400
11193 Accordion greedy implementation Statement B Educational Codeforces Round 58 (Rated for Div. 2) {1101} PROGRAMMING 64483 1300
16427 Lunar New Year and Number Division greedy implementation math sortings Statement C Codeforces Round 536 (Div. 2) {1106} PROGRAMMING Tutorial 1000
5035 Array and Segments (Easy version) brute force greedy implementation Statement E1 Codeforces Round 535 (Div. 3) {1108} PROGRAMMING 64751 1800
19895 Got Any Grapes? brute force greedy implementation Statement A Codeforces Round 538 (Div. 2) {1114} PROGRAMMING Codeforces Round #538 (Div. 2) Editorial 800
11767 Ilya and a Colorful Walk greedy implementation Statement A Codeforces Global Round 2 {1119} PROGRAMMING Codeforces Global Round 2 Editorial 1100
7237 Ramesses and Corner Inversion constructive algorithms greedy implementation math Statement C Codeforces Global Round 2 {1119} PROGRAMMING Codeforces Global Round 2 Editorial 1500
1764 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
491 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
10447 Draw! greedy implementation Statement B Codeforces Round 541 (Div. 2) {1131} PROGRAMMING Codeforces Round #541 Editorial 1300
10256 Regular Bracket Sequence greedy implementation Statement A Educational Codeforces Round 61 (Rated for Div. 2) {1132} PROGRAMMING T 1100
22951 Sushi for Two binary search greedy implementation Statement A Codeforces Round 545 (Div. 2) {1138} PROGRAMMING Codeforces Round #545 – Editorial 900
20037 Chocolates greedy implementation Statement B Codeforces Round 548 (Div. 2) {1139} PROGRAMMING Codeforces Round #548 Editorial 1100
9067 Colored Boots greedy implementation Statement D Codeforces Round 547 (Div. 3) {1141} PROGRAMMING 66062 1500
18508 Parity Alternated Deletions greedy implementation sortings Statement B Codeforces Round 550 (Div. 3) {1144} PROGRAMMING 66307 1000
11948 Tiling Challenge greedy implementation Statement B Codeforces Round 556 (Div. 2) {1150} PROGRAMMING 66783 1100
12707 Stock Arbitraging greedy implementation Statement A Codeforces Round 556 (Div. 2) {1150} PROGRAMMING 66783 900
16352 Neko Finds Grapes greedy implementation math Statement A Codeforces Round 554 (Div. 2) {1152} PROGRAMMING T 800
12820 Game with Telephone Numbers games greedy implementation Statement B Educational Codeforces Round 63 (Rated for Div. 2) {1155} PROGRAMMING 66687 1200
6623 Ugly Pairs dfs and similar greedy implementation sortings strings Statement B Educational Codeforces Round 64 (Rated for Div. 2) {1156} PROGRAMMING 66827 1800
192 Optimizer graphs greedy hashing implementation Statement G Educational Codeforces Round 64 (Rated for Div. 2) {1156} PROGRAMMING 66827 3100
8656 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
2545 Microtransactions (hard version) binary search greedy implementation Statement F2 Codeforces Round 560 (Div. 3) {1165} PROGRAMMING Codeforces Round #560 (Div. 3) Editorial 2400
5306 Nauuo and Cards greedy implementation Statement A Codeforces Round 564 (Div. 1) {1172} PROGRAMMING Codeforces Round #564 Editorial 1800
4870 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
15330 Lose it! dp greedy implementation Statement C Codeforces Round 565 (Div. 3) {1176} PROGRAMMING 67598 1300
25470 Divide it! brute force greedy implementation Statement A Codeforces Round 565 (Div. 3) {1176} PROGRAMMING 67598 800
2690 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
10189 Nick and Array greedy implementation Statement B Codeforces Round 569 (Div. 2) {1180} PROGRAMMING Editorial of Round #569 1500
6719 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
2764 Candy Box (hard version) greedy implementation sortings Statement G Codeforces Round 570 (Div. 3) {1183} PROGRAMMING Tutorial 2100
1222 Vus the Cossack and a Graph dfs and similar graphs greedy implementation Statement F Codeforces Round 571 (Div. 2) {1186} PROGRAMMING E 2300
6992 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
14624 Pillars greedy implementation Statement B Educational Codeforces Round 69 (Rated for Div. 2) {1197} PROGRAMMING E 1000
2585 Treasure Hunting binary search dp greedy implementation Statement D Codeforces Round 577 (Div. 2) {1201} PROGRAMMING Codeforces Round #577 (Div 2) Editorial 2000
2814 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
9659 Remove the Substring (easy version) greedy implementation Statement D1 Codeforces Round 579 (Div. 3) {1203} PROGRAMMING Codeforces Round #579 (Div. 3) Editorial 1600
8466 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
13851 Square Filling constructive algorithms greedy implementation Statement B Educational Codeforces Round 71 (Rated for Div. 2) {1207} PROGRAMMING Educational Codeforces Round 71 Editorial 1200
23723 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
5807 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
7968 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
4177 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
12997 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
3177 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
12345 Yellow Cards greedy implementation math Statement A Codeforces Round 585 (Div. 2) {1215} PROGRAMMING Codeforces Round #585 Editorial 1000
19975 Shooting greedy implementation sortings Statement B Codeforces Round 587 (Div. 3) {1216} PROGRAMMING Codeforces Round #587 (Div. 3) Editorial 1000
2134 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
19797 Ania and Minimizing greedy implementation Statement B Codeforces Round 588 (Div. 2) {1230} PROGRAMMING 70008 1000
10605 Labs constructive algorithms greedy implementation Statement C Codeforces Round 593 (Div. 2) {1236} PROGRAMMING 70654 1300
1774 Alice and the Doll brute force data structures greedy implementation Statement D Codeforces Round 593 (Div. 2) {1236} PROGRAMMING 70654 2100
4616 Balanced Removals (Harder) binary search constructive algorithms divide and conquer greedy implementation sortings Statement C2 Codeforces Global Round 5 {1237} PROGRAMMING T 1900
1840 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
2576 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
16741 Good Numbers (easy version) brute force greedy implementation Statement C1 Codeforces Round 595 (Div. 3) {1249} PROGRAMMING Codeforces Round #595 (Div. 3) Editorial 1300
2997 Twin Buildings greedy implementation Statement H 2019-2020 ICPC, Asia Jakarta Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1252} PROGRAMMING T 1900
11792 Silly Mistake greedy implementation Statement B Codeforces Round 600 (Div. 2) {1253} PROGRAMMING Editorial 1400
5791 Feeding Chicken constructive algorithms greedy implementation Statement A Codeforces Round 601 (Div. 1) {1254} PROGRAMMING Codeforces Round #601 Editorial 1900
17482 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
11879 PIN Codes greedy implementation Statement B Codeforces Round 603 (Div. 2) {1263} PROGRAMMING Разбор Codeforces Round #603 (Div. 2) 1400
10552 Beautiful Regional Contest greedy implementation Statement A Codeforces Round 604 (Div. 1) {1264} PROGRAMMING 71995 1500
3986 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
2459 Spaceship Solitaire data structures greedy implementation Statement E Codeforces Global Round 6 {1266} PROGRAMMING Codeforces Global Round 6 Editorial 2100
3138 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
9215 Long Beautiful Integer constructive algorithms greedy implementation strings Statement A Codeforces Round 609 (Div. 1) {1268} PROGRAMMING Codeforces Round #609 — Editorial 1700
11226 Shawarma Tent brute force geometry greedy implementation Statement C Codeforces Round 608 (Div. 2) {1271} PROGRAMMING 72247 1300
3500 Portals data structures dp greedy implementation sortings Statement D Codeforces Round 608 (Div. 2) {1271} PROGRAMMING 72247 2100
14819 Snow Walking Robot constructive algorithms greedy implementation Statement B Codeforces Round 605 (Div. 3) {1272} PROGRAMMING Codeforces Round #605 (Div. 3) Editorial 1200
8843 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
33426 Just Eat It! dp greedy implementation Statement B Codeforces Round 613 (Div. 2) {1285} PROGRAMMING Codeforces Round #613 (Div. 2) Editorial 1300
23141 Angry Students greedy implementation Statement A Codeforces Round 612 (Div. 2) {1287} PROGRAMMING Codeforces Round #612 - Editorial 800
15601 Array Sharpening greedy implementation Statement B Codeforces Round 616 (Div. 2) {1291} PROGRAMMING 1000.0 Codeforces Round #616 Editorial 1300
6863 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
12901 MEX maximizing data structures greedy implementation math Statement D Codeforces Round 615 (Div. 3) {1294} PROGRAMMING Codeforces Round #615 (Div. 3) Editorial 1600
5291 Obtain a Permutation greedy implementation math Statement E Codeforces Round 615 (Div. 3) {1294} PROGRAMMING Codeforces Round #615 (Div. 3) Editorial 2000
128 Movie Fan *special data structures greedy implementation sortings Statement F Kotlin Heroes: Episode 3 {1297} PROGRAMMING Kotlin Heroes: Episode 3 Editorial
26509 Assigning to Classes greedy implementation sortings Statement B Codeforces Round 618 (Div. 2) {1300} PROGRAMMING 750.0 Codeforces Round #618 Editorial 1000
13109 Perfect Keyboard dfs and similar greedy implementation Statement C Educational Codeforces Round 82 (Rated for Div. 2) {1303} PROGRAMMING Educational Codeforces Round 82 1500
18996 Longest Palindrome brute force constructive algorithms greedy implementation strings Statement B Codeforces Round 620 (Div. 2) {1304} PROGRAMMING 1000.0 Codeforces Round #620 (Div. 2) Editorial 1100
18150 Air Conditioner dp greedy implementation sortings two pointers Statement C Codeforces Round 620 (Div. 2) {1304} PROGRAMMING 1500.0 Codeforces Round #620 (Div. 2) Editorial 1500
3309 Kuroni and the Score Distribution constructive algorithms greedy implementation math Statement E Ozon Tech Challenge 2020 (Div.1 + Div.2, Rated, T-shirts + prizes!) {1305} PROGRAMMING 2000.0 Ozon Tech Challenge 2020 Editorial 2100
1475 Cow and Treats binary search combinatorics dp greedy implementation math Statement E Codeforces Round 621 (Div. 1 + Div. 2) {1307} PROGRAMMING 2500.0 Codeforces Round #621 (Div. 1 + Div. 2) Editorial 2400
15743 Cow and Haybales greedy implementation Statement A Codeforces Round 621 (Div. 1 + Div. 2) {1307} PROGRAMMING 500.0 Codeforces Round #621 (Div. 1 + Div. 2) Editorial 800
47056 Add Odd or Subtract Even greedy implementation math Statement A Codeforces Round 624 (Div. 3) {1311} PROGRAMMING 74224 700
18721 Adding Powers bitmasks greedy implementation math number theory ternary search Statement C Educational Codeforces Round 83 (Rated for Div. 2) {1312} PROGRAMMING 74640
7088 Different Rules binary search constructive algorithms greedy implementation math Statement B Codeforces Round 622 (Div. 2) {1313} PROGRAMMING 1000.0 Editorial 1700
16409 Fast Food Restaurant brute force greedy implementation Statement A Codeforces Round 622 (Div. 2) {1313} PROGRAMMING 500.0 Editorial 900
21098 Even Subset Sum Problem brute force dp greedy implementation Statement A Codeforces Round 626 (Div. 2, based on Moscow Open Olympiad in Informatics) {1323} PROGRAMMING 500.0 Codeforces Round #626 Editorial
12644 Count Subrectangles greedy implementation Statement B Codeforces Round 626 (Div. 2, based on Moscow Open Olympiad in Informatics) {1323} PROGRAMMING 1000.0 Codeforces Round #626 Editorial
31099 Frog Jumps binary search data structures greedy implementation Statement C Codeforces Round 627 (Div. 3) {1324} PROGRAMMING Codeforces Round #627 (Div. 3) Editorial
39337 CopyCopyCopyCopyCopy greedy implementation Statement B Codeforces Round 628 (Div. 2) {1325} PROGRAMMING 750.0 74235 800
33586 Ternary XOR greedy implementation Statement C Codeforces Round 629 (Div. 3) {1328} PROGRAMMING 75246 1200
9831 Dreamoon Likes Coloring constructive algorithms greedy implementation math Statement A Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov! {1329} PROGRAMMING 500.0 Codeforces Round #631 Editorial 1800
1841 Drazil Likes Heap constructive algorithms data structures greedy implementation sortings Statement C Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov! {1329} PROGRAMMING 1500.0 Codeforces Round #631 Editorial 2400
19930 Exercising Walk greedy implementation math Statement A Codeforces Round 630 (Div. 2) {1332} PROGRAMMING 500.0 Codeforces Round #630 Editorial 1200
22203 K-Complete Word dfs and similar dsu greedy implementation strings Statement C Codeforces Round 630 (Div. 2) {1332} PROGRAMMING 1250.0 Codeforces Round #630 Editorial 1500
4190 Challenges in school №41 brute force constructive algorithms games graphs greedy implementation sortings Statement D Codeforces Round 632 (Div. 2) {1333} PROGRAMMING 1750.0 Codeforces Round #632 (Div. 2) editorial
22327 Kind Anton greedy implementation Statement B Codeforces Round 632 (Div. 2) {1333} PROGRAMMING 750.0 Codeforces Round #632 (Div. 2) editorial
4669 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
7818 Minimum Euler Cycle constructive algorithms graphs greedy implementation Statement D Educational Codeforces Round 85 (Rated for Div. 2) {1334} PROGRAMMING Educational Codeforces Round 85 Editorial
40123 Two Teams Composing binary search greedy implementation sortings Statement C Codeforces Round 634 (Div. 3) {1335} PROGRAMMING 75993 1100
37360 Kana and Dragon Quest game greedy implementation math Statement B Codeforces Round 635 (Div. 2) {1337} PROGRAMMING 1000.0 Codeforces Round #635 Editorial 1000
3505 Perfect Triples bitmasks brute force constructive algorithms divide and conquer greedy implementation math Statement C Codeforces Round 633 (Div. 1) {1338} PROGRAMMING 1500.0 Editorial
13738 Nastya and Strange Generator brute force data structures greedy implementation Statement A Codeforces Round 637 (Div. 1) - Thanks, Ivan Belonogov! {1340} PROGRAMMING 500.0 Codeforces Round #637 Editorial
21387 Nastya and Door greedy implementation Statement B Codeforces Round 637 (Div. 2) - Thanks, Ivan Belonogov! {1341} PROGRAMMING 1000.0 Codeforces Round #637 Editorial
1433 Restore the Permutation by Sorted Segments brute force constructive algorithms data structures greedy implementation Statement F Codeforces Round 636 (Div. 3) {1343} PROGRAMMING 76352 2800
8873 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
2494 Are You Fired? constructive algorithms data structures dp greedy implementation Statement E Codeforces Round 645 (Div. 2) {1358} PROGRAMMING 2000.0 Codeforces Round #645 (Div. 2) Editorial 2400
568 Tasty Cookie binary search constructive algorithms greedy implementation Statement F Codeforces Round 645 (Div. 2) {1358} PROGRAMMING 2500.0 Codeforces Round #645 (Div. 2) Editorial 2700
29681 New Theatre Square brute force dp greedy implementation two pointers Statement B Educational Codeforces Round 88 (Rated for Div. 2) {1359} PROGRAMMING Educational Codeforces Round 88 Editorial 1000
3919 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
447 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
25275 Matrix Game games greedy implementation Statement A Codeforces Round 648 (Div. 2) {1365} PROGRAMMING 500.0 Editorial — Codeforces Round #648 1100
25417 Rotation Matching constructive algorithms data structures greedy implementation Statement C Codeforces Round 648 (Div. 2) {1365} PROGRAMMING 1250.0 Editorial — Codeforces Round #648 1400
21774 Solve The Maze constructive algorithms dfs and similar dsu graphs greedy implementation shortest paths Statement D Codeforces Round 648 (Div. 2) {1365} PROGRAMMING 1500.0 Editorial — Codeforces Round #648 1700
4706 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
8954 Task On The Board constructive algorithms greedy implementation sortings Statement D Codeforces Round 650 (Div. 3) {1367} PROGRAMMING Codeforces Round #650 (Div. 3) Editorial
1137 Lamps on a Circle games greedy implementation interactive math Statement F Codeforces Global Round 8 {1368} PROGRAMMING 3000.0 Codeforces Global Round 8: editorial
25817 AccurateLee greedy implementation strings Statement B Codeforces Round 652 (Div. 2) {1369} PROGRAMMING 1000.0 Codeforces Round #652 (Div. 2) Editorial 1200
2520 DeadLee constructive algorithms data structures graphs greedy implementation sortings Statement E Codeforces Round 652 (Div. 2) {1369} PROGRAMMING 2500.0 Codeforces Round #652 (Div. 2) Editorial 2400
5315 Binary Subsequence Rotation binary search data structures dp greedy implementation Statement E Codeforces Round 651 (Div. 2) {1370} PROGRAMMING 2500.0 Editorial — Codeforces Round #651
11415 Odd-Even Subsequence binary search dp greedy implementation sortings Statement D Codeforces Round 651 (Div. 2) {1370} PROGRAMMING 2000.0 Editorial — Codeforces Round #651
68306 Maximum GCD brute force greedy implementation number theory Statement A Codeforces Round 651 (Div. 2) {1370} PROGRAMMING 500.0 Editorial — Codeforces Round #651
21561 A Cookie for You constructive algorithms greedy implementation math Statement C Codeforces Round 654 (Div. 2) {1371} PROGRAMMING 1250.0 Codeforces Round #654 (Div. 2) Editorial
19593 Pluses and Minuses binary search dp greedy implementation math Statement C Educational Codeforces Round 90 (Rated for Div. 2) {1373} PROGRAMMING Educational Codeforces Round 90 Editorial
30124 Donut Shops greedy implementation math Statement A Educational Codeforces Round 90 (Rated for Div. 2) {1373} PROGRAMMING Educational Codeforces Round 90 Editorial
15230 Reading Books (easy version) data structures greedy implementation sortings Statement E1 Codeforces Round 653 (Div. 3) {1374} PROGRAMMING 79517
1754 Mastermind constructive algorithms greedy implementation sortings Statement C Codeforces Round 658 (Div. 1) {1381} PROGRAMMING 2000.0 Codeforces Round #658 Editorial 2500
2987 Removing Leaves data structures dfs and similar divide and conquer greedy implementation trees Statement F Codeforces Round 656 (Div. 3) {1385} PROGRAMMING Codeforces Round #656 (Div. 3) Editorial 2300
7017 Captain Flint and Treasure data structures dfs and similar dp graphs greedy implementation trees Statement D Codeforces Round 660 (Div. 2) {1388} PROGRAMMING 2000.0 Codeforces Round #660 Editorial 2000
4603 Segment Intersections binary search brute force greedy implementation math Statement D Educational Codeforces Round 92 (Rated for Div. 2) {1389} PROGRAMMING 80809
20910 Good String brute force dp greedy implementation two pointers Statement C Educational Codeforces Round 92 (Rated for Div. 2) {1389} PROGRAMMING 80809
30368 Fix You brute force greedy implementation Statement B Codeforces Round 663 (Div. 2) {1391} PROGRAMMING 750.0 Codeforces Round #663 (Div. 2) Editorial
19795 Omkar and Waterslide greedy implementation Statement C Codeforces Global Round 10 {1392} PROGRAMMING 1000.0 Codeforces Global Round 10 — Editorial
17527 Applejack and Storages data structures greedy implementation Statement B Codeforces Round 662 (Div. 2) {1393} PROGRAMMING 1000.0 Codeforces Round #662 Editorial
2654 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
24952 Maximum Product brute force dp greedy implementation sortings Statement B Codeforces Round 670 (Div. 2) {1406} PROGRAMMING 1000.0 Codeforces Round #670 (Div. 2) Editorial
23408 Subset Mex greedy implementation math Statement A Codeforces Round 670 (Div. 2) {1406} PROGRAMMING 500.0 Codeforces Round #670 (Div. 2) Editorial
2772 Grime Zoo constructive algorithms greedy implementation Statement D Technocup 2021 - Elimination Round 3 {1411} PROGRAMMING 2000.0 Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial
1872 Poman Numbers greedy implementation math Statement E Technocup 2021 - Elimination Round 3 {1411} PROGRAMMING 2250.0 Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial
6975 Shurikens data structures greedy implementation Statement D Technocup 2021 - Elimination Round 1 {1413} PROGRAMMING 2000.0 Codeforces Round 679 (Div. 1, Div. 2) and Technocup Round 1 editorial
17746 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
26757 Sage's Birthday (easy version) binary search greedy implementation sortings Statement D1 Codeforces Round 671 (Div. 2) {1419} PROGRAMMING 750.0 Codeforces Round #671 Editorial
17153 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
16450 Killjoy greedy implementation math Statement C Codeforces Round 671 (Div. 2) {1419} PROGRAMMING 1250.0 Codeforces Round #671 Editorial
5318 Pokémon Army (hard version) data structures divide and conquer dp greedy implementation Statement C2 Codeforces Round 672 (Div. 2) {1420} PROGRAMMING 1250.0
925 Minlexes dp greedy implementation strings Statement E Codeforces Round 675 (Div. 2) {1422} PROGRAMMING 2000.0 Codeforces Round #675 (Div. 2) Editorial
15168 Nice Matrix greedy implementation ternary search Statement B Codeforces Round 675 (Div. 2) {1422} PROGRAMMING 750.0 Codeforces Round #675 (Div. 2) Editorial
1029 Excitation of Atoms greedy implementation Statement E 2020 ICPC, COMPFEST 12, Indonesia Multi-Provincial Contest (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1425} PROGRAMMING Tutorial 2200
11561 Chess Cheater greedy implementation sortings Statement B Codeforces Global Round 11 {1427} PROGRAMMING 750.0 Editorial of Global Round 11 1400
20505 Barrels greedy implementation sortings Statement B Educational Codeforces Round 96 (Rated for Div. 2) {1430} PROGRAMMING Educational Codeforces Round 96 — Editorial
30198 Yet Another Bookshelf greedy implementation Statement B Codeforces Round 677 (Div. 3) {1433} PROGRAMMING Codeforces Round #677 (Div. 3) Editorial
1514 Yurii Can Do Everything brute force divide and conquer greedy implementation Statement E Codeforces Round 682 (Div. 2) {1438} PROGRAMMING 2250.0 Codeforces Round #682 (Div. 2) Editorial
5453 Binary Table (Hard Version) constructive algorithms graphs greedy implementation Statement A2 Codeforces Round 684 (Div. 1) {1439} PROGRAMMING 500.0 Codeforces Round #684[Div1 and Div2] Editorial
5516 Identify the Operations brute force combinatorics data structures dsu greedy implementation Statement B Codeforces Round 681 (Div. 1, based on VK Cup 2019-2020 - Final) {1442} PROGRAMMING 1000.0 84298
17557 String Equality dp greedy hashing implementation strings Statement C Codeforces Round 685 (Div. 2) {1451} PROGRAMMING 1250.0 Editorial — Codeforces Round #685
20582 Non-Substring Subsequence greedy implementation strings Statement B Codeforces Round 685 (Div. 2) {1451} PROGRAMMING 750.0 Editorial — Codeforces Round #685
1773 Two Editorials brute force data structures greedy implementation Statement E Educational Codeforces Round 98 (Rated for Div. 2) {1452} PROGRAMMING 84847
6297 Triangles greedy implementation Statement C Codeforces Round 688 (Div. 2) {1453} PROGRAMMING 1500.0 Codeforces Round #688 (Div. 2) Editorial
22748 Sequence Transformation greedy implementation Statement C Codeforces Round 686 (Div. 3) {1454} PROGRAMMING Codeforces Round #686 (Div. 3) Editorial
2256 Water Level brute force graphs greedy implementation math Statement E Codeforces Round 689 (Div. 2, based on Zed Code Competition) {1461} PROGRAMMING 2250.0 Codeforces Round #689 (Div. 2). Editorial
9318 Waste Sorting flows greedy implementation Statement N 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} PROGRAMMING Tutorial (PDF)
11811 Building a Fence dp greedy implementation two pointers Statement C Educational Codeforces Round 101 (Rated for Div. 2) {1469} PROGRAMMING Educational Codeforces Round 101 Editorial
20065 Strange List brute force greedy implementation math Statement B Codeforces Round 694 (Div. 2) {1471} PROGRAMMING 750.0 Codeforces Round #694 Editorial
37966 Replacing Elements greedy implementation sortings Statement A Educational Codeforces Round 102 (Rated for Div. 2) {1473} PROGRAMMING Educational Codeforces Round 102 Editorial
14538 Array Destruction constructive algorithms data structures greedy implementation sortings Statement C Codeforces Round 696 (Div. 2) {1474} PROGRAMMING 1500.0 Codeforces Round #696 Editorial
4374 Cleaning data structures dp greedy implementation Statement D Codeforces Round 696 (Div. 2) {1474} PROGRAMMING 2000.0 Codeforces Round #696 Editorial
7573 Painting the Array I constructive algorithms data structures dp greedy implementation Statement B1 Codeforces Round 700 (Div. 1) {1479} PROGRAMMING 750.0 Editorial of Codeforces Round #700
4601 Painting the Array II data structures dp greedy implementation Statement B2 Codeforces Round 700 (Div. 1) {1479} PROGRAMMING 750.0 Editorial of Codeforces Round #700
18049 The Great Hero greedy implementation Statement B Codeforces Round 700 (Div. 2) {1480} PROGRAMMING 1000.0 Editorial of Codeforces Round #700
12543 Fence Painting brute force constructive algorithms greedy implementation Statement C Codeforces Round 699 (Div. 2) {1481} PROGRAMMING 1500.0 Codeforces Round #699 (Div. 2) Editorial
20040 New Colony brute force greedy implementation Statement B Codeforces Round 699 (Div. 2) {1481} PROGRAMMING 750.0 Codeforces Round #699 (Div. 2) Editorial
4957 AB Graph constructive algorithms graphs greedy implementation strings Statement D Codeforces Round 699 (Div. 2) {1481} PROGRAMMING 2000.0 Codeforces Round #699 (Div. 2) Editorial
25893 Space Navigation greedy implementation strings Statement A Codeforces Round 699 (Div. 2) {1481} PROGRAMMING 500.0 Codeforces Round #699 (Div. 2) Editorial
3852 Basic Diplomacy constructive algorithms flows greedy implementation Statement A Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round) {1483} PROGRAMMING 500.0 Technocup 2021: Final Round and Codeforces Round #709 — tutorial
27389 Shifting Stacks greedy implementation Statement A Codeforces Round 703 (Div. 2) {1486} PROGRAMMING 500.0 Codeforces Round #703 (Div. 2) Editorial
15652 Minimum Ties brute force constructive algorithms dfs and similar graphs greedy implementation math Statement C Educational Codeforces Round 104 (Rated for Div. 2) {1487} PROGRAMMING 87873
8490 Pekora and Trampoline brute force data structures dp graphs greedy implementation Statement C Codeforces Global Round 13 {1491} PROGRAMMING 1000.0 Codeforces Global Round 13 Editorial
19176 K-th Largest Value brute force greedy implementation Statement A Codeforces Global Round 13 {1491} PROGRAMMING 500.0 Codeforces Global Round 13 Editorial
14339 Minimal Cost brute force greedy implementation math Statement B Codeforces Global Round 13 {1491} PROGRAMMING 750.0 Codeforces Global Round 13 Editorial
1337 Almost Fault-Tolerant Database brute force constructive algorithms dfs and similar greedy implementation Statement E Codeforces Round 704 (Div. 2) {1492} PROGRAMMING 3000.0 Codeforces Round #704 Editorial
5039 K-beautiful Strings binary search brute force greedy implementation strings Statement C Codeforces Round 705 (Div. 2) {1493} PROGRAMMING 1750.0 Codeforces Round #705 (Div.2) Editorial
15544 Berland Crossword binary search bitmasks brute force greedy implementation Statement B Educational Codeforces Round 105 (Rated for Div. 2) {1494} PROGRAMMING Educational Codeforces Round 105 Editorial
2911 Dogeforces brute force constructive algorithms divide and conquer dsu greedy implementation trees Statement D Educational Codeforces Round 105 (Rated for Div. 2) {1494} PROGRAMMING Educational Codeforces Round 105 Editorial
551 Qingshan and Daniel brute force data structures greedy implementation Statement E Codeforces Round 706 (Div. 1) {1495} PROGRAMMING 2500.0 Codeforces Round #706 Editorial
6408 Let's Go Hiking constructive algorithms games greedy implementation Statement B Codeforces Round 706 (Div. 1) {1495} PROGRAMMING 1000.0 Codeforces Round #706 Editorial
22269 Binary Removals brute force dp greedy implementation Statement B Educational Codeforces Round 106 (Rated for Div. 2) {1499} PROGRAMMING Educational Codeforces Round 106 Editorial
27884 Flip the Bits constructive algorithms greedy implementation math Statement B Codeforces Round 712 (Div. 2) {1504} PROGRAMMING 1000.0 Codeforces Round #712 Editorial 1200
1936 Cakewalk constructive algorithms greedy implementation shortest paths Statement E April Fools Day Contest 2021 {1505} PROGRAMMING tutorial
21345 Partial Replacement greedy implementation Statement B Codeforces Round 710 (Div. 3) {1506} PROGRAMMING Editorial
6781 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
6936 Education binary search greedy implementation math Statement F Codeforces Round 713 (Div. 3) {1512} PROGRAMMING Codeforces Round #713 (Div. 3) Editorial
14316 Fillomino 2 constructive algorithms greedy implementation Statement C Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2) {1517} PROGRAMMING 1500.0 Contest 2050 and Codeforces Round #718 (Div.1 + Div.2) Editorial
2435 Nastia Plays with a Tree constructive algorithms data structures dfs and similar dp flows graphs greedy implementation trees Statement D Codeforces Round 720 (Div. 2) {1521} PROGRAMMING 2250.0 90477
9233 Compression and Expansion brute force data structures greedy implementation trees Statement C Deltix Round, Spring 2021 (open for everyone, rated, Div. 1 + Div. 2) {1523} PROGRAMMING 1500.0 Deltix Round, Spring 2021. Editorial 1600
5140 Robot Collisions data structures greedy implementation sortings Statement C Educational Codeforces Round 109 (Rated for Div. 2) {1525} PROGRAMMING 90793
3414 Minimax constructive algorithms greedy implementation strings Statement E Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine)) {1530} PROGRAMMING 2000.0 Codeforces Round #733 Editorial (all problems)
13038 Histogram Ugliness greedy implementation math Statement B Codeforces LATOKEN Round 1 (Div. 1 + Div. 2) {1534} PROGRAMMING 1000.0 Codeforces LATOKEN Round 1 (Div. 1 + Div. 2) Editorial
18123 Unstable String dp greedy implementation strings two pointers Statement C Educational Codeforces Round 110 (Rated for Div. 2) {1535} PROGRAMMING 91481
5198 Omkar and Medians data structures greedy implementation Statement D Codeforces Round 724 (Div. 2) {1536} PROGRAMMING 2000.0 Codeforces Round #724 — Editorial 2000
31021 Challenging Cliffs greedy implementation math Statement C Codeforces Round 726 (Div. 2) {1537} PROGRAMMING 1000.0 Codeforces Round #726 (Div.2) Editorial
30961 Pretty Permutations constructive algorithms greedy implementation Statement A Codeforces Round 728 (Div. 2) {1541} PROGRAMMING 500.0 Tutorial
28230 Alphabetical Strings greedy implementation strings Statement B Codeforces Round 731 (Div. 3) {1547} PROGRAMMING Codeforces Round #731 (Div. 3) Editorial
27509 Gregor and the Pawn Game flows graphs greedy implementation Statement B Codeforces Round 736 (Div. 2) {1549} PROGRAMMING 750.0 Codeforces Round 736 Editorial
10982 Manhattan Subarrays brute force geometry greedy implementation Statement C Educational Codeforces Round 111 (Rated for Div. 2) {1550} PROGRAMMING Educational Codeforces Round 111 Editorial
9960 Mikasa binary search bitmasks greedy implementation Statement C Codeforces Round 735 (Div. 2) {1554} PROGRAMMING 1750.0 Editorial of Codeforces Round #735 (Div. 2) 1800
444 Four Vertices constructive algorithms data structures graphs greedy implementation shortest paths Statement G Codeforces Global Round 16 {1566} PROGRAMMING 3000.0 Codeforces Global Round 16 Editorial
8392 Seating Arrangements (hard version) data structures greedy implementation sortings two pointers Statement D2 Codeforces Global Round 16 {1566} PROGRAMMING 1000.0 Codeforces Global Round 16 Editorial
4992 Expression Evaluation Error constructive algorithms greedy implementation math Statement D Codeforces Round 742 (Div. 2) {1567} PROGRAMMING 1750.0 Codeforces Round #742 Editorial
294 Shooting *special greedy implementation Statement C Kotlin Heroes: Practice 8 {1570} PROGRAMMING
4955 The Strongest Build data structures dfs and similar graphs greedy hashing implementation shortest paths Statement D Educational Codeforces Round 114 (Rated for Div. 2) {1574} PROGRAMMING 95188
5488 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
11810 Ticks brute force dp greedy implementation Statement C Codeforces Round 744 (Div. 3) {1579} PROGRAMMING Codeforces Round #744 (Div. 3) Editorial
3958 Portal brute force dp greedy implementation Statement A Codeforces Round 745 (Div. 1) {1580} PROGRAMMING 500.0 Codeforces Round #745 Editorial 1700
15391 Gardener and Tree dfs and similar greedy implementation trees Statement E Codeforces Round 748 (Div. 3) {1593} PROGRAMMING Editorial for Codeforces Round #748 (Div.3)
8731 Social Network dsu graphs greedy implementation trees Statement D Deltix Round, Autumn 2021 (open for everyone, rated, Div. 1 + Div. 2) {1609} PROGRAMMING 2000.0 Deltix Round, Autumn 2021. Editorial 1600
19228 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
7380 BA-String bitmasks brute force dp greedy implementation math shortest paths Statement C Educational Codeforces Round 119 (Rated for Div. 2) {1620} PROGRAMMING 98061
1966 New School binary search data structures greedy implementation sortings Statement E Hello 2022 {1621} PROGRAMMING 2250.0
14749 Integers Shop data structures greedy implementation Statement B Hello 2022 {1621} PROGRAMMING 1000.0
12076 Monsters And Spells data structures dp fft greedy implementation two pointers Statement C Educational Codeforces Round 121 (Rated for Div. 2) {1626} PROGRAMMING 99136
3728 Grid Xor constructive algorithms greedy implementation interactive math Statement C Codeforces Round 767 (Div. 1) {1628} PROGRAMMING 1250.0 99276
4883 Big Brush dfs and similar greedy implementation Statement D Codeforces Round 771 (Div. 2) {1638} PROGRAMMING 1750.0 Codeforces Round #771 Editorial
710 Playing Around the Table constructive algorithms greedy implementation Statement F Codeforces Round 774 (Div. 2) {1646} PROGRAMMING 3000.0 Codeforces Round #774 (Div. 2) Editorial 2900
14084 Game of Ball Passing greedy implementation Statement B Codeforces Round 775 (Div. 2, based on Moscow Open Olympiad in Informatics) {1649} PROGRAMMING 1000.0 Codeforces Round #775 Editorial
4516 Rescheduling the Exam binary search data structures greedy implementation math sortings Statement E Codeforces Round 776 (Div. 3) {1650} PROGRAMMING 100712
18867 Weight of the System of Nested Segments greedy hashing implementation sortings Statement C Codeforces Round 776 (Div. 3) {1650} PROGRAMMING 100712
682 Sum of Matchings dfs and similar greedy implementation math Statement E Educational Codeforces Round 124 (Rated for Div. 2) {1651} PROGRAMMING Educational Codeforces Round 124 Editorial
19489 Maximum Cake Tastiness greedy implementation sortings Statement A Codeforces Round 778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round) {1654} PROGRAMMING 500.0 Editorial of Codeforces Round #778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round) 800
4518 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
34703 Red Versus Blue constructive algorithms greedy implementation math Statement A Codeforces Round 782 (Div. 2) {1659} PROGRAMMING 500.0 Codeforces Round #782 (Div. 2) Editorial
16469 Line Empire dp greedy implementation math Statement C Codeforces Round 782 (Div. 2) {1659} PROGRAMMING 1500.0 Codeforces Round #782 (Div. 2) Editorial
8415 Matrix and Shifts constructive algorithms greedy implementation Statement E Codeforces Round 780 (Div. 3) {1660} PROGRAMMING Codeforces Round #780 (Div. 3) Editorial
5546 Progressions Covering data structures greedy implementation Statement D Educational Codeforces Round 126 (Rated for Div. 2) {1661} PROGRAMMING Educational Codeforces Round 126 Editorial
1894 MinimizOR binary search bitmasks data structures dp greedy implementation Statement E Codeforces Round 781 (Div. 2) {1665} PROGRAMMING 2250.0 Codeforces Round #781 (Div. 2) Editorial
42946 Odd/Even Increments greedy greedy implementation math Statement C Codeforces Round 784 (Div. 4) {1669} PROGRAMMING 102101 800
16091 Prof. Slim greedy implementation sortings Statement A Codeforces Round 788 (Div. 2) {1670} PROGRAMMING 500.0 Tutorial 800
14160 Unequal Array constructive algorithms greedy implementation Statement C Codeforces Global Round 20 {1672} PROGRAMMING 750.0 Global Round 20 Editorial 1100
7038 Cyclic Rotation constructive algorithms greedy implementation two pointers Statement D Codeforces Global Round 20 {1672} PROGRAMMING 1000.0 Global Round 20 Editorial 1700
5763 Desktop Rearrangement data structures greedy implementation Statement F Codeforces Round 786 (Div. 3) {1674} PROGRAMMING 102482
30170 X-Sum brute force greedy implementation Statement D Codeforces Round 790 (Div. 4) {1676} PROGRAMMING Codeforces Round #790 (Div. 4) Editorial
35910 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
20845 Longest Strike data structures greedy implementation sortings two pointers Statement F Codeforces Round 790 (Div. 4) {1676} PROGRAMMING Codeforces Round #790 (Div. 4) Editorial
16771 LIS or Reverse LIS? constructive algorithms greedy implementation math Statement C Codeforces Round 793 (Div. 2) {1682} PROGRAMMING 1500.0 Codeforces Round #793 (Div. 2) Editorial
3764 Linguistics greedy implementation strings Statement B Codeforces Round 794 (Div. 1) {1685} PROGRAMMING 1000.0 103198 2000