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< 1 2 3 >Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 6231 | Bus | greedy implementation math | Statement | C | Codeforces Round 436 (Div. 2) {864} | PROGRAMMING | 1500 | ||
| 6367 | Make a Permutation! | greedy implementation math | Statement | D | Codeforces Round 436 (Div. 2) {864} | PROGRAMMING | 1500 | ||
| 10308 | Divisiblity of Differences | implementation math number theory | Statement | B | Codeforces Round 441 (Div. 2, by Moscow Team Olympiad) {876} | PROGRAMMING | Codeforces Round #441. Editorial. | 1300 | |
| 17534 | Rounding | implementation math | Statement | A | Codeforces Round 451 (Div. 2) {898} | PROGRAMMING | Codeforces Round #451 (Div.2) Editorial | 800 | |
| 7197 | New Year and Curling | brute force geometry implementation math | Statement | C | Good Bye 2017 {908} | PROGRAMMING | Good Bye 2017 Editorial | 1500 | |
| 24084 | Modular Exponentiation | implementation math | Statement | A | Hello 2018 {913} | PROGRAMMING | Tutorial | 1000 | |
| 15703 | Perfect Squares | brute force implementation math | Statement | A | Codecraft-18 and Codeforces Round 458 (Div. 1 + Div. 2, combined) {914} | PROGRAMMING | Tutorial | 1100 | |
| 9538 | Jamie and Alarm Snooze | brute force implementation math | Statement | A | Codeforces Round 457 (Div. 2) {916} | PROGRAMMING | Codeforces Round #457 (Div. 2) Editorial | 1200 | |
| 3670 | The Monster | dp greedy implementation math | Statement | A | Codeforces Round 459 (Div. 1) {917} | PROGRAMMING | Codeforces Round #459 Editorial | 1900 | |
| 4152 | 2-3-numbers | implementation math | Statement | A | VK Cup 2018 - Wild-card Round 1 {926} | PROGRAMMING | Разбор VK Cup 2018 — Уайлд-кард Раунд 1 | 1300 | |
| 3485 | Laboratory Work | implementation math | Statement | C | Codeforces Round 468 (Div. 2, based on Technocup 2018 Final Round) {931} | PROGRAMMING | Codeforces Round #468 and Technocup 2018 Final Round Analysis | 1700 | |
| 13071 | Friends Meeting | brute force greedy implementation math | Statement | A | Codeforces Round 468 (Div. 2, based on Technocup 2018 Final Round) {931} | PROGRAMMING | Codeforces Round #468 and Technocup 2018 Final Round Analysis | 800 | |
| 4635 | Save Energy! | binary search implementation math | Statement | A | Codeforces Round 467 (Div. 1) {936} | PROGRAMMING | Codeforces Round #467, Editorial | 1700 | |
| 16360 | Left-handers, Right-handers and Ambidexters | implementation math | Statement | A | Codeforces Round 469 (Div. 2) {950} | PROGRAMMING | 58291 | 900 | |
| 3755 | Mahmoud and Ehab and the xor-MST | bitmasks dp graphs implementation math | Statement | E | Codeforces Round 473 (Div. 2) {959} | PROGRAMMING | Codeforces round #473 editorial | 1900 | |
| 8351 | Make a Square | brute force implementation math | Statement | C | Educational Codeforces Round 42 (Rated for Div. 2) {962} | PROGRAMMING | Educational Codeforces Round 42 Editorial | 1400 | |
| 6044 | Lara Croft and the New Game | implementation math | Statement | B | Educational Codeforces Round 43 (Rated for Div. 2) {976} | PROGRAMMING | 59195 | 1300 | |
| 9924 | Almost Arithmetic Progression | brute force implementation math | Statement | D | Codeforces Round 481 (Div. 3) {978} | PROGRAMMING | T | 1500 | |
| 10943 | Links and Pearls | implementation math | Statement | A | Codeforces Round 480 (Div. 2) {980} | PROGRAMMING | Tutorial | 900 | |
| 4774 | Finite or not? | implementation math | Statement | A | Codeforces Round 483 (Div. 1) [Thanks, Botan Investments and Victor Shaburov!] {983} | PROGRAMMING | Codeforces Round #483 [Thanks, Botan Investments and Victor Shaburov!] Editoral | 1700 | |
| 11203 | Commentary Boxes | implementation math | Statement | A | Educational Codeforces Round 45 (Rated for Div. 2) {990} | PROGRAMMING | Educational Codeforces Round 45 Editorial | 1000 | |
| 340 | Concise and clear | brute force greedy implementation math | Statement | F | Codeforces Round 491 (Div. 2) {991} | PROGRAMMING | 60181 | 2800 | |
| 1749 | Nastya and a Game | brute force implementation math | Statement | D | Codeforces Round 489 (Div. 2) {992} | PROGRAMMING | 60083 | 2100 | |
| 7436 | Suit and Tie | greedy implementation math | Statement | B | Codeforces Round 492 (Div. 1) [Thanks, uDebug!] {995} | PROGRAMMING | Editorial for Codeforces Round #492 [Thanks u-Debug!] | 1500 | |
| 8653 | Convert to Ones | brute force greedy implementation math | Statement | A | Codeforces Round 493 (Div. 1) {997} | PROGRAMMING | 60357 | 1500 | |
| 11485 | Intense Heat | brute force implementation math | Statement | C | Codeforces Round 494 (Div. 3) {1003} | PROGRAMMING | 60417 | 1300 | |
| 9929 | Sonya and Exhibition | constructive algorithms greedy implementation math | Statement | B | Codeforces Round 495 (Div. 2) {1004} | PROGRAMMING | 60443 | 1400 | |
| 6673 | Photo of The Sky | brute force implementation math sortings | Statement | A | Codeforces Round 500 (Div. 1) [based on EJOI] {1012} | PROGRAMMING | 60920 | 1500 | |
| 15671 | Death Note | greedy implementation math | Statement | A | Educational Codeforces Round 48 (Rated for Div. 2) {1016} | PROGRAMMING | Разбор Educational Codeforces Round 48 | 900 | |
| 9618 | The Bits | implementation math | Statement | B | Codeforces Round 502 (in memory of Leopoldo Taravilse, Div. 1 + Div. 2) {1017} | PROGRAMMING | Разбор (англ.) | 1200 | |
| 8737 | Numbers on the Chessboard | implementation math | Statement | B | Educational Codeforces Round 49 (Rated for Div. 2) {1027} | PROGRAMMING | Educational Codeforces Round 49 Editorial | 1300 | |
| 4226 | Concatenated Multiples | implementation math | Statement | D | Codeforces Round 506 (Div. 3) {1029} | PROGRAMMING | Codeforces Round #506 (Div. 3) Editorial | 2100 | |
| 13392 | Golden Plate | implementation math | Statement | A | Technocup 2019 - Elimination Round 2 {1031} | PROGRAMMING | Codeforces Round #517 and Technocup 2019 Elimination Round 2 Editorial | 700 | |
| 11272 | Elections | implementation math | Statement | A | Codeforces Round 519 by Botan Investments {1043} | PROGRAMMING | Codeforces Round #519 Editorial | 800 | |
| 9868 | Vasya and Multisets | brute force dp greedy implementation math | Statement | C | Educational Codeforces Round 51 (Rated for Div. 2) {1051} | PROGRAMMING | Educational Codeforces Round 51 Editorial | 1400 | |
| 514 | Chips Puzzle | constructive algorithms implementation math | Statement | E | Mail.Ru Cup 2018 Round 1 {1054} | PROGRAMMING | Editorial | 2400 | |
| 10690 | Multiplicity | data structures dp implementation math number theory | Statement | C | Codeforces Round 523 (Div. 2) {1061} | PROGRAMMING | Tutorial (en) | 1700 | |
| 23998 | Coins | greedy implementation math | Statement | A | Codeforces Round 523 (Div. 2) {1061} | PROGRAMMING | Tutorial (en) | 800 | |
| 5946 | Banh-mi | greedy implementation math | Statement | C | Codeforces Round 520 (Div. 2) {1062} | PROGRAMMING | Tutorial | 1600 | |
| 4164 | Fun with Integers | dfs and similar graphs implementation math | Statement | D | Codeforces Round 520 (Div. 2) {1062} | PROGRAMMING | Tutorial | 1800 | |
| 15257 | Vasya and Chocolate | implementation math | Statement | A | Educational Codeforces Round 52 (Rated for Div. 2) {1065} | PROGRAMMING | Educational Codeforces Round 52 Editorial | 800 | |
| 6556 | Binary Numbers AND Sum | data structures implementation math | Statement | E | Codeforces Round 515 (Div. 3) {1066} | PROGRAMMING | 62419 | 1700 | |
| 11213 | Vasya and Books | implementation math | Statement | B | Educational Codeforces Round 53 (Rated for Div. 2) {1073} | PROGRAMMING | 62742 | 1100 | |
| 9129 | The King's Race | implementation math | Statement | A | Lyft Level 5 Challenge 2018 - Final Round (Open Div. 2) {1075} | PROGRAMMING | E | 900 | |
| 14555 | Divisor Subtraction | implementation math number theory | Statement | B | Educational Codeforces Round 54 (Rated for Div. 2) {1076} | PROGRAMMING | E | 1200 | |
| 1664 | Olya and magical square | constructive algorithms implementation math | Statement | D | Codeforces Round 524 (Div. 2) {1080} | PROGRAMMING | Codeforces Round #524 (Div. 2) Editorial | 2000 | |
| 9261 | Vasya and Book | implementation math | Statement | A | Educational Codeforces Round 55 (Rated for Div. 2) {1082} | PROGRAMMING | 63544 | 1200 | |
| 5642 | Connect Three | implementation math | Statement | C | Technocup 2019 - Elimination Round 4 {1085} | PROGRAMMING | Technocup 2019 — Elimination Round 4 + Codeforces Round 528: editorial | 1600 | |
| 1086 | New Year and the Acquaintance Estimation | binary search data structures graphs greedy implementation math sortings | Statement | E | Good Bye 2018 {1091} | PROGRAMMING | Editorial | 2400 | |
| 18554 | New Year and the Christmas Ornament | brute force implementation math | Statement | A | Good Bye 2018 {1091} | PROGRAMMING | Editorial | 900 | |
| 5641 | Great Vova Wall (Version 1) | greedy implementation math | Statement | D1 | Codeforces Round 527 (Div. 3) {1092} | PROGRAMMING | Codeforces Round #527 (Div. 3) Editorial | 2100 | |
| 19600 | Find Divisible | greedy implementation math | Statement | A | Educational Codeforces Round 57 (Rated for Div. 2) {1096} | PROGRAMMING | Разбор Educational Codeforces Round 57 | 800 | |
| 273 | Fedya the Potter | binary search implementation math number theory | Statement | E | Codeforces Round 530 (Div. 1) {1098} | PROGRAMMING | 64331 | 3400 | |
| 16768 | Game with string | data structures implementation math | Statement | B | Codeforces Round 534 (Div. 2) {1104} | PROGRAMMING | Codeforces Round #534 — Editorial | 1300 | |
| 15891 | Splitting into digits | constructive algorithms implementation math | Statement | A | Codeforces Round 534 (Div. 2) {1104} | PROGRAMMING | Codeforces Round #534 — Editorial | 800 | |
| 15738 | Lunar New Year and Number Division | greedy implementation math sortings | Statement | C | Codeforces Round 536 (Div. 2) {1106} | PROGRAMMING | Tutorial | 1000 | |
| 3900 | Compression | dp implementation math number theory | Statement | D | Educational Codeforces Round 59 (Rated for Div. 2) {1107} | PROGRAMMING | Educational Codeforces Round 59 Editorial | 1800 | |
| 6508 | 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 | |
| 7823 | 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 | |
| 11441 | Best Subsegment | implementation math | Statement | A | Educational Codeforces Round 60 (Rated for Div. 2) {1117} | PROGRAMMING | 65365 | 1100 | |
| 7174 | Ramesses and Corner Inversion | constructive algorithms greedy implementation math | Statement | C | Codeforces Global Round 2 {1119} | PROGRAMMING | Codeforces Global Round 2 Editorial | 1500 | |
| 480 | 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 | |
| 38442 | Game 23 | implementation math | Statement | A | Codeforces Round 547 (Div. 3) {1141} | PROGRAMMING | 66062 | 1000 | |
| 16195 | Neko Finds Grapes | greedy implementation math | Statement | A | Codeforces Round 554 (Div. 2) {1152} | PROGRAMMING | T | 800 | |
| 11527 | Gourmet Cat | implementation math | Statement | C | Codeforces Round 552 (Div. 3) {1154} | PROGRAMMING | Codeforces Round #552 (Div. 3) Editorial | 1400 | |
| 8308 | 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 | |
| 7844 | Expansion coefficient of the array | implementation math | Statement | B | Codeforces Round 559 (Div. 2) {1159} | PROGRAMMING | 66993 | 1300 | |
| 13399 | A pile of stones | implementation math | Statement | A | Codeforces Round 559 (Div. 2) {1159} | PROGRAMMING | 66993 | 800 | |
| 3947 | Power Transmission (Hard Edition) | data structures geometry implementation math | Statement | C2 | Codeforces Round 558 (Div. 2) {1163} | PROGRAMMING | 66943 | 2000 | |
| 14674 | Remainder | implementation math | Statement | A | Codeforces Round 560 (Div. 3) {1165} | PROGRAMMING | Codeforces Round #560 (Div. 3) Editorial | 1200 | |
| 12675 | Circle Metro | implementation math | Statement | A | Codeforces Round 562 (Div. 2) {1169} | PROGRAMMING | Codeforces Round #562 — Editorial | 1000 | |
| 19709 | From Hero to Zero | implementation math | Statement | A | Educational Codeforces Round 66 (Rated for Div. 2) {1175} | PROGRAMMING | Editorial | 1000 | |
| 2444 | 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 | |
| 27385 | Alex and a Rhombus | dp implementation math | Statement | A | Codeforces Round 569 (Div. 2) {1180} | PROGRAMMING | Editorial of Round #569 | 800 | |
| 7050 | Extra Element | implementation math | Statement | D | Codeforces Round 568 (Div. 2) {1185} | PROGRAMMING | Editorial for Codeforces Round #568 (Div. 2) | 1700 | |
| 6535 | Vus the Cossack and Strings | implementation math | Statement | C | Codeforces Round 571 (Div. 2) {1186} | PROGRAMMING | E | 1800 | |
| 680 | Vus the Cossack and a Field | divide and conquer implementation math | Statement | E | Codeforces Round 571 (Div. 2) {1186} | PROGRAMMING | E | 2500 | |
| 11057 | Candies! | data structures dp implementation math | Statement | C | Codeforces Round 572 (Div. 2) {1189} | PROGRAMMING | Editorial of Codeforces Round #572 | 1400 | |
| 1162 | 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 | |
| 2763 | 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 | |
| 540 | You Are Given Some Letters... | binary search implementation math | Statement | F | Educational Codeforces Round 70 (Rated for Div. 2) {1202} | PROGRAMMING | 68972 | 2800 | |
| 24091 | Common Divisors | implementation math | Statement | C | Codeforces Round 579 (Div. 3) {1203} | PROGRAMMING | Codeforces Round #579 (Div. 3) Editorial | 1300 | |
| 23369 | 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 | |
| 8510 | 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 | |
| 12832 | 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 | |
| 12172 | Yellow Cards | greedy implementation math | Statement | A | Codeforces Round 585 (Div. 2) {1215} | PROGRAMMING | Codeforces Round #585 Editorial | 1000 | |
| 2061 | 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 | |
| 11886 | Filling the Grid | implementation math | Statement | B | Codeforces Round 589 (Div. 2) {1228} | PROGRAMMING | 70162 | 1300 | |
| 22068 | Balanced Rating Changes | implementation math | Statement | A | Codeforces Global Round 5 {1237} | PROGRAMMING | T | 1100 | |
| 13513 | Beautiful Numbers | data structures implementation math two pointers | Statement | B | Codeforces Round 604 (Div. 2) {1265} | PROGRAMMING | Codeforces Round #604 Editorial | 1300 | |
| 3868 | 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 | |
| 3055 | 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 | |
| 3274 | 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 | |
| 5834 | Cut and Paste | implementation math | Statement | A | Codeforces Round 607 (Div. 1) {1280} | PROGRAMMING | Codeforces Round #607 Editorial | 1700 | |
| 4202 | Beingawesomeism | implementation math | Statement | B | Codeforces Round 607 (Div. 1) {1280} | PROGRAMMING | Codeforces Round #607 Editorial | 1800 | |
| 15491 | Temporarily unavailable | implementation math | Statement | A | Codeforces Round 610 (Div. 2) {1282} | PROGRAMMING | 72461 | 900 | |
| 294 | 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 | |
| 12646 | MEX maximizing | data structures greedy implementation math | Statement | D | Codeforces Round 615 (Div. 3) {1294} | PROGRAMMING | Codeforces Round #615 (Div. 3) Editorial | 1600 | |
| 5173 | Obtain a Permutation | greedy implementation math | Statement | E | Codeforces Round 615 (Div. 3) {1294} | PROGRAMMING | Codeforces Round #615 (Div. 3) Editorial | 2000 | |
| 21651 | Non-zero | implementation math | Statement | A | Codeforces Round 618 (Div. 2) {1300} | PROGRAMMING | 500.0 | Codeforces Round #618 Editorial | 700 |
| 3265 | 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 |
| 1362 | 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 |
| 46143 | Add Odd or Subtract Even | greedy implementation math | Statement | A | Codeforces Round 624 (Div. 3) {1311} | PROGRAMMING | 74224 | 700 | |
| 18314 | Adding Powers | bitmasks greedy implementation math number theory ternary search | Statement | C | Educational Codeforces Round 83 (Rated for Div. 2) {1312} | PROGRAMMING | 74640 | ||
| 7006 | Different Rules | binary search constructive algorithms greedy implementation math | Statement | B | Codeforces Round 622 (Div. 2) {1313} | PROGRAMMING | 1000.0 | Editorial | 1700 |
| 25244 | Maximums | implementation math | Statement | B | Codeforces Global Round 7 {1326} | PROGRAMMING | 1000.0 | 74961 | 900 |
| 31976 | K-th Beautiful String | combinatorics implementation math | Statement | B | Codeforces Round 629 (Div. 3) {1328} | PROGRAMMING | 75246 | 1300 | |
| 9656 | 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 |
| 14512 | Dreamoon Likes Permutations | implementation math | Statement | B | Codeforces Round 631 (Div. 2) - Thanks, Denis aramis Shitov! {1330} | PROGRAMMING | 1000.0 | Codeforces Round #631 Editorial | 1400 |
| 19852 | Exercising Walk | greedy implementation math | Statement | A | Codeforces Round 630 (Div. 2) {1332} | PROGRAMMING | 500.0 | Codeforces Round #630 Editorial | 1200 |
| 4128 | 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 | |
| 4566 | 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 | |
| 24338 | Level Statistics | implementation math | Statement | A | Educational Codeforces Round 85 (Rated for Div. 2) {1334} | PROGRAMMING | Educational Codeforces Round 85 Editorial | ||
| 36818 | Kana and Dragon Quest game | greedy implementation math | Statement | B | Codeforces Round 635 (Div. 2) {1337} | PROGRAMMING | 1000.0 | Codeforces Round #635 Editorial | 1000 |
| 3436 | 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 | |
| 18495 | Square? | brute force implementation math | Statement | B | Testing Round 16 (Unrated) {1351} | PROGRAMMING | 1000.0 | 900 | |
| 103475 | Sum of Round Numbers | implementation math | Statement | A | Codeforces Round 640 (Div. 4) {1352} | PROGRAMMING | 77161 | 800 | |
| 28748 | Sequence with Digits | brute force implementation math | Statement | A | Codeforces Round 643 (Div. 2) {1355} | PROGRAMMING | 750.0 | Codeforces Round #643 (Div. 2) Editorial | 1200 |
| 11912 | Count Triangles | binary search implementation math two pointers | Statement | C | Codeforces Round 643 (Div. 2) {1355} | PROGRAMMING | 1250.0 | Codeforces Round #643 (Div. 2) Editorial | 1800 |
| 3843 | 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 |
| 340 | 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 |
| 172 | Johnny and New Toy | data structures implementation math | Statement | F | Codeforces Round 647 (Div. 1) - Thanks, Algo Muse! {1361} | PROGRAMMING | 3500.0 | Codeforces Round #647 Editorial | 3300 |
| 40288 | Odd Selection | brute force implementation math | Statement | A | Codeforces Round 646 (Div. 2) {1363} | PROGRAMMING | 500.0 | 78202 | 1200 |
| 4405 | Guess The Maximums | binary search divide and conquer implementation interactive math | Statement | D | Codeforces Round 646 (Div. 2) {1363} | PROGRAMMING | 2000.0 | 78202 | 2100 |
| 1104 | Lamps on a Circle | games greedy implementation interactive math | Statement | F | Codeforces Global Round 8 {1368} | PROGRAMMING | 3000.0 | Codeforces Global Round 8: editorial | |
| 64005 | Maximum GCD | brute force greedy implementation number theory | Statement | A | Codeforces Round 651 (Div. 2) {1370} | PROGRAMMING | 500.0 | Editorial — Codeforces Round #651 | |
| 5523 | Asterism (Easy Version) | brute force combinatorics implementation math number theory sortings | Statement | E1 | Codeforces Round 654 (Div. 2) {1371} | PROGRAMMING | 1500.0 | Codeforces Round #654 (Div. 2) Editorial | |
| 21352 | 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 | |
| 19332 | 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 | ||
| 29420 | Donut Shops | greedy implementation math | Statement | A | Educational Codeforces Round 90 (Rated for Div. 2) {1373} | PROGRAMMING | Educational Codeforces Round 90 Editorial | ||
| 4546 | Segment Intersections | binary search brute force greedy implementation math | Statement | D | Educational Codeforces Round 92 (Rated for Div. 2) {1389} | PROGRAMMING | 80809 | ||
| 18882 | Omkar and Infinity Clock | implementation math | Statement | B | Codeforces Global Round 10 {1392} | PROGRAMMING | 750.0 | Codeforces Global Round 10 — Editorial | |
| 2592 | 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 | ||
| 75 | Chess Rush | *special combinatorics dp implementation math | Statement | C | Central-European Olympiad in Informatics, CEOI 2020, Day 2 (IOI, Unofficial Mirror Contest, Unrated) {1403} | PROGRAMMING | CEOI 2020 Online Mirror — Day 2 Tutorial | ||
| 22909 | Subset Mex | greedy implementation math | Statement | A | Codeforces Round 670 (Div. 2) {1406} | PROGRAMMING | 500.0 | Codeforces Round #670 (Div. 2) Editorial | |
| 9264 | Discrete Acceleration | binary search implementation math two pointers | Statement | C | Grakn Forces 2020 {1408} | PROGRAMMING | 1250.0 | Grakn Forces -- Editorial | |
| 1812 | 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 | |
| 3494 | Decryption | bitmasks constructive algorithms implementation math number theory | Statement | E | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 2250.0 | Codeforces Round #671 Editorial | |
| 16949 | 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 | |
| 16286 | Killjoy | greedy implementation math | Statement | C | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 1250.0 | Codeforces Round #671 Editorial | |
| 4375 | Hexagons | brute force implementation math shortest paths ternary search | Statement | D | Codeforces Round 676 (Div. 2) {1421} | PROGRAMMING | 2000.0 | Codeforces Round #676 (Div. 2) Editorial | |
| 54789 | Floor Number | implementation math | Statement | A | Codeforces Round 674 (Div. 3) {1426} | PROGRAMMING | 83120 | 800 | |
| 28112 | Numbers on Whiteboard | constructive algorithms data structures games implementation math | Statement | C | Educational Codeforces Round 96 (Rated for Div. 2) {1430} | PROGRAMMING | Educational Codeforces Round 96 — Editorial | ||
| 62371 | Boring Apartments | implementation math | Statement | A | Codeforces Round 677 (Div. 3) {1433} | PROGRAMMING | Codeforces Round #677 (Div. 3) Editorial | ||
| 20366 | Buy the String | implementation math | Statement | A | Codeforces Round 684 (Div. 2) {1440} | PROGRAMMING | 500.0 | Codeforces Round #684[Div1 and Div2] Editorial | |
| 277 | Multithreading (Hard Version) | combinatorics implementation math | Statement | H2 | Codeforces Global Round 12 {1450} | PROGRAMMING | 1750.0 | Codeforces Global Round 12 Editorial | |
| 1680 | Latin Square | data structures implementation math matrices | Statement | C | Codeforces Round 691 (Div. 1) {1458} | PROGRAMMING | 1500.0 | Codeforces Round #691 Editorial (finished) | |
| 10169 | Divide and Summarize | binary search brute force data structures divide and conquer implementation sortings | Statement | D | Codeforces Round 689 (Div. 2, based on Zed Code Competition) {1461} | PROGRAMMING | 1500.0 | Codeforces Round #689 (Div. 2). Editorial | |
| 2209 | 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 | |
| 11337 | Close Tuples (hard version) | binary search combinatorics implementation math sortings two pointers | Statement | E2 | Codeforces Round 690 (Div. 3) {1462} | PROGRAMMING | Codeforces Round #690 (Div. 3) Editorial | ||
| 6046 | Busy Robot | implementation math | Statement | C | Educational Codeforces Round 100 (Rated for Div. 2) {1463} | PROGRAMMING | Educational Codeforces Round 100 Editorial | ||
| 573 | Plane Tiling | implementation math | Statement | I | 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} | PROGRAMMING | Tutorial (PDF) | ||
| 19919 | Strange List | brute force greedy implementation math | Statement | B | Codeforces Round 694 (Div. 2) {1471} | PROGRAMMING | 750.0 | Codeforces Round #694 Editorial | |
| 17561 | Advertising Agency | combinatorics implementation math sortings | Statement | E | Codeforces Round 697 (Div. 3) {1475} | PROGRAMMING | Codeforces Round #697 (Div. 3) Editorial | ||
| 10616 | Nezzar and Symmetric Array | constructive algorithms implementation math sortings | Statement | C | Codeforces Round 698 (Div. 2) {1478} | PROGRAMMING | 1500.0 | Tutorial | 1700 |
| 4847 | 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 | |
| 9590 | Restore Modulo | implementation math | Statement | B | Технокубок 2021 - Финал {1482} | PROGRAMMING | 1250.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 4125 | Restore Modulo | implementation math | Statement | B | Codeforces Round 709 (Div. 2, based on Technocup 2021 Final Round) {1484} | PROGRAMMING | 1250.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 17896 | Replace and Keep Sorted | dp implementation math | Statement | B | Codeforces Round 701 (Div. 2) {1485} | PROGRAMMING | 1000.0 | Editorial of Codeforces Round #701 (Div. 2) | 1200 |
| 15386 | 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 | ||
| 14222 | Minimal Cost | brute force greedy implementation math | Statement | B | Codeforces Global Round 13 {1491} | PROGRAMMING | 750.0 | Codeforces Global Round 13 Editorial | |
| 18262 | Max and Mex | implementation math | Statement | B | Codeforces Round 706 (Div. 2) {1496} | PROGRAMMING | 1000.0 | Codeforces Round #706 Editorial | |
| 9480 | Going Home | brute force implementation math | Statement | A | Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics) {1500} | PROGRAMMING | 750.0 | Codeforces Round #707 Editorial | 1800 |
| 25540 | Flip the Bits | constructive algorithms greedy implementation math | Statement | B | Codeforces Round 712 (Div. 2) {1504} | PROGRAMMING | 1000.0 | Codeforces Round #712 Editorial | 1200 |
| 4414 | Almost Sorted | binary search bitmasks combinatorics constructive algorithms dp implementation math | Statement | B | Codeforces Round 715 (Div. 1) {1508} | PROGRAMMING | 1000.0 | Codeforces Round #715 Editorial | |
| 6662 | 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 | |
| 6802 | Education | binary search greedy implementation math | Statement | F | Codeforces Round 713 (Div. 3) {1512} | PROGRAMMING | Codeforces Round #713 (Div. 3) Editorial | ||
| 17530 | Maximum Sum of Products | brute force dp implementation math ternary search two pointers | Statement | D | Educational Codeforces Round 108 (Rated for Div. 2) {1519} | PROGRAMMING | Educational Codeforces Round 108 Editorial | ||
| 14946 | Sequence Pair Weight | implementation math | Statement | C | Codeforces Round 721 (Div. 2) {1527} | PROGRAMMING | 1500.0 | Tutorial | 1600 |
| 1130 | Travel to Bertown | *special implementation math | Statement | A | Kotlin Heroes: Episode 7 {1533} | PROGRAMMING | Kotlin Heroes 7 — Editorial | ||
| 12862 | 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 | |
| 30229 | Challenging Cliffs | greedy implementation math | Statement | C | Codeforces Round 726 (Div. 2) {1537} | PROGRAMMING | 1000.0 | Codeforces Round #726 (Div.2) Editorial | |
| 2915 | Priority Queue | combinatorics dp implementation math | Statement | D | Codeforces Round 729 (Div. 2) {1542} | PROGRAMMING | 2000.0 | ||
| 5605 | Need for Pink Slips | brute force dfs and similar implementation math probabilities | Statement | C | Codeforces Round 730 (Div. 2) {1543} | PROGRAMMING | 1500.0 | Codeforces Round #730 (Div. 2) Editorial | |
| 32254 | Shortest Path with Obstacle | implementation math | Statement | A | Codeforces Round 731 (Div. 3) {1547} | PROGRAMMING | Codeforces Round #731 (Div. 3) Editorial | ||
| 2055 | Excellent Arrays | brute force combinatorics constructive algorithms implementation math | Statement | D | Educational Codeforces Round 111 (Rated for Div. 2) {1550} | PROGRAMMING | Educational Codeforces Round 111 Editorial | ||
| 2983 | Domino (hard version) | constructive algorithms implementation math | Statement | D2 | Codeforces Round 734 (Div. 3) {1551} | PROGRAMMING | Editorial for Codeforces Round #734 (Div.3) | ||
| 27974 | Infinity Table | implementation math | Statement | C | Codeforces Round 739 (Div. 3) {1560} | PROGRAMMING | 94009 | 800 | |
| 20521 | Scenes From a Memory | brute force implementation math number theory | Statement | B | Codeforces Round 741 (Div. 2) {1562} | PROGRAMMING | 1000.0 | Editorial of Codeforces Round 741 (Div. 2) | |
| 4842 | Expression Evaluation Error | constructive algorithms greedy implementation math | Statement | D | Codeforces Round 742 (Div. 2) {1567} | PROGRAMMING | 1750.0 | Codeforces Round #742 Editorial | |
| 368 | Sweepstake | *special brute force constructive algorithms implementation math | Statement | D | Kotlin Heroes: Episode 8 {1571} | PROGRAMMING | Kotlin Heroes 8 Editorial | ||
| 797 | Knitting Batik | implementation math | Statement | K | COMPFEST 13 - Finals Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1575} | PROGRAMMING | COMPFEST 13 — Editorial | ||
| 4129 | Easy Scheduling | implementation math | Statement | E | ICPC WF Moscow Invitational Contest - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1578} | PROGRAMMING | Tutorial (PDF) | ||
| 5337 | 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 | ||
| 2648 | Red-Black Number | dp implementation math | Statement | F | Codeforces Round 748 (Div. 3) {1593} | PROGRAMMING | Editorial for Codeforces Round #748 (Div.3) | ||
| 1606 | Rubik's Cube Coloring (hard version) | brute force dp implementation math trees | Statement | E2 | Codeforces Round 747 (Div. 2) {1594} | PROGRAMMING | 1500.0 | 95525 | 2300 |
| 346 | October 18, 2017 | combinatorics dp implementation math | Statement | F | Codeforces Round 752 (Div. 1) {1603} | PROGRAMMING | 3750.0 | Editorial of Codeforces Round #752 | |
| 1181 | Array Equalizer | binary search implementation math number theory sortings | Statement | E | Codeforces Round 754 (Div. 2) {1605} | PROGRAMMING | 2500.0 | tutorial | 2400 |
| 19493 | Update Files | implementation math | Statement | B | Educational Codeforces Round 116 (Rated for Div. 2) {1606} | PROGRAMMING | 96454 | ||
| 18862 | 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 |
| 17061 | Anti Light's Cell Guessing | constructive algorithms implementation math | Statement | A | Codeforces Global Round 17 {1610} | PROGRAMMING | 500.0 | Codeforces Global Round 17 Editorial | |
| 13187 | Representative Edges | brute force geometry implementation math | Statement | C | Good Bye 2021: 2022 is NEAR {1616} | PROGRAMMING | 1500.0 | Good Bye 2021 -- Editorial | 1500 |
| 1008 | Christmas Chocolates | dfs and similar dp games graphs implementation math number theory shortest paths trees | Statement | E | Codeforces Round 761 (Div. 2) {1617} | PROGRAMMING | 3000.0 | Editorial for Codeforces Round #761 (Div. 2) | |
| 4722 | Reverse | bitmasks implementation math strings | Statement | F | Codeforces Round 760 (Div. 3) {1618} | PROGRAMMING | Codeforces Round #760 (Div. 3) Editorial | ||
| 32898 | Squares and Cubes | implementation math | Statement | B | Codeforces Round 762 (Div. 3) {1619} | PROGRAMMING | Tutorial | ||
| 7262 | BA-String | bitmasks brute force dp greedy implementation math shortest paths | Statement | C | Educational Codeforces Round 119 (Rated for Div. 2) {1620} | PROGRAMMING | 98061 | ||
| 20672 | Robot Cleaner | brute force implementation math | Statement | A | Codeforces Round 763 (Div. 2) {1623} | PROGRAMMING | 500.0 | Codeforces Round #763 (Div. 2) Editorial | |
| 1467 | Robot Cleaner Revisit | dp implementation math probabilities | Statement | D | Codeforces Round 763 (Div. 2) {1623} | PROGRAMMING | 2500.0 | Codeforces Round #763 (Div. 2) Editorial | |
| 52534 | Make AP | implementation math | Statement | B | Codeforces Round 764 (Div. 3) {1624} | PROGRAMMING | Codeforces Round #764 (Div. 3) Editorial | ||
| 3569 | Grid Xor | constructive algorithms greedy implementation interactive math | Statement | C | Codeforces Round 767 (Div. 1) {1628} | PROGRAMMING | 1250.0 | 99276 | |
| 1736 | Spanning Tree Queries | binary search data structures dsu graphs implementation math sortings | Statement | E | Educational Codeforces Round 122 (Rated for Div. 2) {1633} | PROGRAMMING | 99539 | ||
| 3487 | Expand the Path | brute force combinatorics implementation math | Statement | E | Educational Codeforces Round 123 (Rated for Div. 2) {1644} | PROGRAMMING | 100227 | ||
| 7867 | Cross Coloring | implementation math | Statement | D | Educational Codeforces Round 123 (Rated for Div. 2) {1644} | PROGRAMMING | 100227 | ||
| 23484 | Madoka and Math Dad | implementation math | Statement | A | Codeforces Round 777 (Div. 2) {1647} | PROGRAMMING | 500.0 | Codeforces Round #777 Editorial | |
| 4457 | Rescheduling the Exam | binary search data structures greedy implementation math sortings | Statement | E | Codeforces Round 776 (Div. 3) {1650} | PROGRAMMING | 100712 | ||
| 615 | 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 | ||
| 3057 | Potion Brewing Class | dfs and similar implementation math number theory trees | Statement | D | Codeforces Round 778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round) {1654} | PROGRAMMING | 2000.0 | Editorial of Codeforces Round #778 (Div. 1 + Div. 2, based on Technocup 2022 Final Round) | 2100 |
| 4443 | 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 | |
| 30685 | 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 | |
| 14952 | Line Empire | dp greedy implementation math | Statement | C | Codeforces Round 782 (Div. 2) {1659} | PROGRAMMING | 1500.0 | Codeforces Round #782 (Div. 2) Editorial | |
| 11426 | Maximum Product Strikes Back | binary search implementation math | Statement | D | Codeforces Round 780 (Div. 3) {1660} | PROGRAMMING | Codeforces Round #780 (Div. 3) Editorial | ||
| 7941 | Promising String (easy version) | brute force implementation math strings | Statement | F1 | Codeforces Round 780 (Div. 3) {1660} | PROGRAMMING | Codeforces Round #780 (Div. 3) Editorial | ||
| 3136 | Promising String (hard version) | data structures implementation math strings | Statement | F2 | Codeforces Round 780 (Div. 3) {1660} | PROGRAMMING | Codeforces Round #780 (Div. 3) Editorial | ||
| 16775 | Direction Change | implementation math | Statement | A | Codeforces Round 783 (Div. 2) {1668} | PROGRAMMING | 500.0 | Codeforces Round #783 Editorial | 800 |
| 41324 | Odd/Even Increments | greedy greedy implementation math | Statement | C | Codeforces Round 784 (Div. 4) {1669} | PROGRAMMING | 102101 | 800 | |
| 10978 | Where is the Pizza? | data structures dfs and similar dsu graphs implementation math | Statement | C | Codeforces Round 788 (Div. 2) {1670} | PROGRAMMING | 1750.0 | Tutorial | 1400 |
| 5599 | Very Suspicious | binary search brute force geometry implementation math | Statement | D | Codeforces Round 788 (Div. 2) {1670} | PROGRAMMING | 2250.0 | Tutorial | 1700 |
| 16807 | Log Chopping | constructive algorithms games implementation math | Statement | A | Codeforces Global Round 20 {1672} | PROGRAMMING | 250.0 | Global Round 20 Editorial | 800 |
| 3622 | Lost Arithmetic Progression | combinatorics implementation math number theory | Statement | D | Codeforces Round 785 (Div. 2) {1673} | PROGRAMMING | 2000.0 | Codeforces Round #785 (Div. 2) Editorial | |
| 34519 | 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 | ||
| 4540 | Tokitsukaze and Meeting | implementation math | Statement | B | Codeforces Round 789 (Div. 1) {1677} | PROGRAMMING | 1250.0 | Tutorial | |
| 21015 | Card Trick | implementation math | Statement | B | Educational Codeforces Round 129 (Rated for Div. 2) {1681} | PROGRAMMING | 103163 | 800 | |
| 16445 | 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 | |
| 731 | Cute number | binary search brute force implementation math | Statement | D | Codeforces Round 796 (Div. 1) {1687} | PROGRAMMING | 1500.0 | Editorial of Codeforces Round 796 | |
| 19865 | Palindromic Numbers | constructive algorithms implementation math | Statement | B | Codeforces Round 802 (Div. 2) {1700} | PROGRAMMING | 1000.0 | 103978 | 1100 |
| 6382 | Difference Array | brute force implementation math sortings | Statement | B | Codeforces Round 808 (Div. 1) {1707} | PROGRAMMING | 750.0 | 104930 | |
| 32801 | Everyone Loves to Sleep | implementation math | Statement | A | Codeforces Round 811 (Div. 3) {1714} | PROGRAMMING | Codeforces Round #811 (Div. 3) Editorial | ||
| 3449 | 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 | |
| 154 | Impressionism | constructive algorithms graphs implementation math | Statement | E | Codeforces Round 814 (Div. 1) {1718} | PROGRAMMING | 2250.0 | Codeforces Round #814 (Div. 1, Div. 2) Editorial | |
| 105 | Mainak and the Bleeding Polygon | geometry implementation math | Statement | H | Codeforces Round 819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 {1726} | PROGRAMMING | 3500.0 | Codeforces Round #819 (Div. 1 + Div. 2) and Grimoire of Code Annual Contest 2022 Editorial | |
| 25432 | Colored Balls: Revisited | greedy implementation sortings | Statement | A | Educational Codeforces Round 135 (Rated for Div. 2) {1728} | PROGRAMMING | 106805 | ||
| 17163 | 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 |
| 17493 | Bestie | brute force constructive algorithms implementation math number theory | Statement | A | Codeforces Round 830 (Div. 2) {1732} | PROGRAMMING | 750.0 | 108327 | 1000 |
| 10163 | Ela's Fitness and the Luxury Number | binary search implementation math | Statement | B | Dytechlab Cup 2022 {1737} | PROGRAMMING | 1000.0 | Editorial of Dytechlab Cup 2022 | |
| 6401 | Ela and Crickets | games implementation math | Statement | C | Dytechlab Cup 2022 {1737} | PROGRAMMING | 1500.0 | Editorial of Dytechlab Cup 2022 | |
| 24868 | Even-Odd Increments | implementation math | Statement | B | Codeforces Round 828 (Div. 3) {1744} | PROGRAMMING | Codeforces Round #828 (Div. 3) Editorial | ||
| 14019 | Permutation Operations | constructive algorithms greedy implementation math | Statement | C | Codeforces Global Round 23 {1746} | PROGRAMMING | 1000.0 | Codeforces Global Round 23 Editorial | |
| 2341 | Valid Bitonic Permutations | combinatorics dp implementation math | Statement | D | Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT {1763} | PROGRAMMING | 2000.0 | Codeforces Round #840 (Div. 2) and Enigma 2022 — Cybros LNMIIT Editorial | |
| 45555 | Extremely Round | implementation math | Statement | A | Educational Codeforces Round 139 (Rated for Div. 2) {1766} | PROGRAMMING | 110066 | ||
| 799 | Inverse Transformation | constructive algorithms implementation math | Statement | F | TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) {1787} | PROGRAMMING | 2500.0 | TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) Editorial | |
| 22292 | Sum of Two Numbers | constructive algorithms greedy implementation math | Statement | B | Codeforces Round 851 (Div. 2) {1788} | PROGRAMMING | 1000.0 | Codeforces Round #851 (Div. 2) Editorial | |
| 964 | Serval and Music Game | brute force combinatorics implementation math number theory | Statement | E | Codeforces Round 853 (Div. 2) {1789} | PROGRAMMING | 2000.0 | Codeforces Round #853 (Div. 2) Editorial | |
| 9916 | Serval and Toxel's Arrays | combinatorics implementation math | Statement | C | Codeforces Round 853 (Div. 2) {1789} | PROGRAMMING | 1250.0 | Codeforces Round #853 (Div. 2) Editorial | |
| 26791 | Premutation | brute force implementation math | Statement | C | Codeforces Round 847 (Div. 3) {1790} | PROGRAMMING | 111948 | ||
| 40830 | Polycarp and the Day of Pi | implementation math strings | Statement | A | Codeforces Round 847 (Div. 3) {1790} | PROGRAMMING | 111948 | ||
| 1399 | City Union | constructive algorithms dp geometry greedy implementation math | Statement | E | Codeforces Round 854 by cybercats (Div. 1 + Div. 2) {1799} | PROGRAMMING | 2250.0 | Codeforces Round #854 Editorial | |
| 6910 | Double Lexicographically Minimum | constructive algorithms greedy implementation strings | Statement | C | Codeforces Round 854 by cybercats (Div. 1 + Div. 2) {1799} | PROGRAMMING | 1500.0 | Codeforces Round #854 Editorial | |
| 12311 | Recent Actions | data structures greedy implementation math | Statement | A | Codeforces Round 854 by cybercats (Div. 1 + Div. 2) {1799} | PROGRAMMING | 500.0 | Codeforces Round #854 Editorial | |
| 14605 | Settlement of Guinea Pigs | implementation math | Statement | B | Codeforces Round 857 (Div. 2) {1802} | PROGRAMMING | 750.0 | Codeforces Round #857 Editorial | |
| 16582 | Interview | binary search implementation interactive | Statement | E | Codeforces Round 859 (Div. 4) {1807} | PROGRAMMING | 114143 |