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Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 20826 | 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 | |
| 13166 | Grid-00100 | constructive algorithms greedy math | Statement | D | Codeforces Round 654 (Div. 2) {1371} | PROGRAMMING | 1500.0 | Codeforces Round #654 (Div. 2) Editorial | |
| 19327 | Magical Calendar | constructive algorithms math | Statement | B | Codeforces Round 654 (Div. 2) {1371} | PROGRAMMING | 1000.0 | Codeforces Round #654 (Div. 2) Editorial | |
| 18292 | Omkar and Baseball | constructive algorithms math | Statement | C | Codeforces Round 655 (Div. 2) {1372} | PROGRAMMING | 1500.0 | Codeforces Round #655 Editorial | 1500 |
| 24609 | Suborrays | constructive algorithms math | Statement | A | Codeforces Round 663 (Div. 2) {1391} | PROGRAMMING | 500.0 | Codeforces Round #663 (Div. 2) Editorial | |
| 21295 | Ternary Sequence | constructive algorithms greedy math | Statement | B | Codeforces Round 665 (Div. 2) {1401} | PROGRAMMING | 1000.0 | Codeforces Round #665 (Div. 2) Editorial | |
| 20723 | Ahahahahahahahaha | constructive algorithms math | Statement | A | Codeforces Round 669 (Div. 2) {1407} | PROGRAMMING | 500.0 | Codeforces Round #669 Editorial | |
| 10135 | Arrays Sum | constructive algorithms greedy math | Statement | B | Grakn Forces 2020 {1408} | PROGRAMMING | 1000.0 | Grakn Forces -- Editorial | |
| 15001 | Finding Sasuke | constructive algorithms math | Statement | A | Technocup 2021 - Elimination Round 1 {1413} | PROGRAMMING | 500.0 | Codeforces Round 679 (Div. 1, Div. 2) and Technocup Round 1 editorial | |
| 2796 | New Game Plus! | constructive algorithms greedy math | Statement | E | Technocup 2021 - Elimination Round 2 {1415} | PROGRAMMING | 2500.0 | Editorial of Codeforces Round 687 (Technocup 2021 — Elimitation Round 2) | |
| 6287 | Make Them Equal | constructive algorithms greedy math | Statement | B | Codeforces Round 673 (Div. 1) {1416} | PROGRAMMING | 1000.0 | Codeforces Round #673 Editorial | 2000 |
| 832 | Bubble Cup hypothesis | constructive algorithms dp math | Statement | J | Bubble Cup 13 - Finals [Online Mirror, unrated, Div. 1] {1423} | PROGRAMMING | FinalsEditorial2020.pdf | ||
| 25587 | 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 | ||
| 21018 | Prime Square | constructive algorithms math | Statement | B | Codeforces Round 678 (Div. 2) {1436} | PROGRAMMING | 1000.0 | Codeforces Round #678 (Div. 2). Editorial | |
| 16363 | Kids Seating | constructive algorithms math | Statement | A | Codeforces Round 681 (Div. 2, based on VK Cup 2019-2020 - Final) {1443} | PROGRAMMING | 500.0 | VK Cup 2019-2020 -- Engine Editorial | |
| 14024 | Add Candies | constructive algorithms math | Statement | A | Codeforces Round 683 (Div. 2, by Meet IT) {1447} | PROGRAMMING | 500.0 | Meet IT Codeforces Round Editorial | |
| 3807 | Errich-Tac-Toe (Hard Version) | constructive algorithms math | Statement | C2 | Codeforces Global Round 12 {1450} | PROGRAMMING | 750.0 | Codeforces Global Round 12 Editorial | |
| 19875 | Ping-pong | constructive algorithms games math | Statement | C | Educational Codeforces Round 99 (Rated for Div. 2) {1455} | PROGRAMMING | 85186 | ||
| 22366 | Jumps | constructive algorithms math | Statement | B | Educational Codeforces Round 99 (Rated for Div. 2) {1455} | PROGRAMMING | 85186 | ||
| 1855 | K and Medians | constructive algorithms math | Statement | H | 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} | PROGRAMMING | Tutorial (PDF) | ||
| 871 | Switch and Flip | constructive algorithms math | Statement | G | Codeforces Global Round 13 {1491} | PROGRAMMING | 2250.0 | Codeforces Global Round 13 Editorial | |
| 21660 | M-arrays | constructive algorithms greedy math | Statement | B | Codeforces Round 708 (Div. 2) {1497} | PROGRAMMING | 750.0 | Codeforces Round #708 Editorial | 1200 |
| 26888 | k-LCM (easy version) | constructive algorithms math | Statement | C1 | Codeforces Round 708 (Div. 2) {1497} | PROGRAMMING | 750.0 | Codeforces Round #708 Editorial | 1200 |
| 18024 | k-LCM (hard version) | constructive algorithms math | Statement | C2 | Codeforces Round 708 (Div. 2) {1497} | PROGRAMMING | 500.0 | Codeforces Round #708 Editorial | 1600 |
| 21436 | Domino on Windowsill | constructive algorithms math | Statement | A | Educational Codeforces Round 106 (Rated for Div. 2) {1499} | PROGRAMMING | Educational Codeforces Round 106 Editorial | ||
| 20195 | Flip the Bits | constructive algorithms greedy implementation math | Statement | B | Codeforces Round 712 (Div. 2) {1504} | PROGRAMMING | 1000.0 | Codeforces Round #712 Editorial | 1200 |
| 538 | Japanese Game | constructive algorithms math | Statement | J | 2020-2021 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1510} | PROGRAMMING | nerc-2020-offline-tutorial.pdf | ||
| 20514 | Phoenix and Gold | constructive algorithms math | Statement | A | Codeforces Global Round 14 {1515} | PROGRAMMING | 500.0 | Editorial | |
| 38907 | Nastia and Nearly Good Numbers | constructive algorithms math | Statement | A | Codeforces Round 720 (Div. 2) {1521} | PROGRAMMING | 500.0 | 90477 | |
| 21920 | Nastia and a Good Array | constructive algorithms math | Statement | B | Codeforces Round 720 (Div. 2) {1521} | PROGRAMMING | 1000.0 | 90477 | |
| 2567 | Figure Fixing | constructive algorithms dfs and similar ds graphs math | Statement | F | Codeforces Round 726 (Div. 2) {1537} | PROGRAMMING | 2000.0 | Codeforces Round #726 (Div.2) Editorial | |
| 32910 | Bad Boy | constructive algorithms greedy math | Statement | B | Codeforces Round 726 (Div. 2) {1537} | PROGRAMMING | 750.0 | Codeforces Round #726 (Div.2) Editorial | |
| 2051 | RPD and Rap Sheet (Hard Version) | constructive algorithms dp interactive math | Statement | D2 | Codeforces Round 730 (Div. 2) {1543} | PROGRAMMING | 1250.0 | Codeforces Round #730 (Div. 2) Editorial | |
| 566 | AquaMoon and Wrong Coordinate | constructive algorithms interactive math | Statement | D | Codeforces Round 732 (Div. 1) {1545} | PROGRAMMING | 2250.0 | Codeforces Round #732 Editorial | 3000 |
| 2836 | Domino (hard version) | constructive algorithms implementation math | Statement | D2 | Codeforces Round 734 (Div. 3) {1551} | PROGRAMMING | Editorial for Codeforces Round #734 (Div.3) | ||
| 7275 | Domino (easy version) | constructive algorithms math | Statement | D1 | Codeforces Round 734 (Div. 3) {1551} | PROGRAMMING | Editorial for Codeforces Round #734 (Div.3) | ||
| 6461 | Two Hundred Twenty One (easy version) | constructive algorithms dp math | Statement | D1 | Codeforces Round 741 (Div. 2) {1562} | PROGRAMMING | 1250.0 | Editorial of Codeforces Round 741 (Div. 2) | |
| 13664 | Rings | constructive algorithms math | Statement | C | Codeforces Round 741 (Div. 2) {1562} | PROGRAMMING | 1250.0 | Editorial of Codeforces Round 741 (Div. 2) | |
| 4613 | Expression Evaluation Error | constructive algorithms greedy implementation math | Statement | D | Codeforces Round 742 (Div. 2) {1567} | PROGRAMMING | 1750.0 | Codeforces Round #742 Editorial | |
| 22811 | Permutation Minimization by Deque | constructive algorithms greedy math | Statement | E1 | Codeforces Round 744 (Div. 3) {1579} | PROGRAMMING | Codeforces Round #744 (Div. 3) Editorial | ||
| 11787 | Diameter of Graph | constructive algorithms graphs greedy math | Statement | B | Codeforces Round 745 (Div. 2) {1581} | PROGRAMMING | 1000.0 | Codeforces Round #745 Editorial | 1200 |
| 10972 | Vupsen, Pupsen and 0 | constructive algorithms math | Statement | D | Codeforces Round 750 (Div. 2) {1582} | PROGRAMMING | 1750.0 | Codeforces Round #750 (Div.2) Editorial | |
| 1423 | Ideal Farm | constructive algorithms math | Statement | F | Codeforces Round 747 (Div. 2) {1594} | PROGRAMMING | 2750.0 | 95525 | 2400 |
| 19412 | Find Array | constructive algorithms math | Statement | A | Codeforces Round 758 (Div.1 + Div. 2) {1608} | PROGRAMMING | 250.0 | Editorial of Codeforces Round #758 (Div.1 + Div. 2) | |
| 16445 | Anti Light's Cell Guessing | constructive algorithms implementation math | Statement | A | Codeforces Global Round 17 {1610} | PROGRAMMING | 500.0 | Codeforces Global Round 17 Editorial | |
| 32104 | Make Even | constructive algorithms math | Statement | A | Codeforces Round 756 (Div. 3) {1611} | PROGRAMMING | Tutorial | 800 | |
| 7415 | Singers' Tour | constructive algorithms math | Statement | E | Codeforces Round 760 (Div. 3) {1618} | PROGRAMMING | Codeforces Round #760 (Div. 3) Editorial | ||
| 2204 | Let's Play the Hat? | constructive algorithms math | Statement | F | Codeforces Round 762 (Div. 3) {1619} | PROGRAMMING | Tutorial | ||
| 4180 | The Winter Hike | constructive algorithms greedy math | Statement | D | Hello 2022 {1621} | PROGRAMMING | 1750.0 | ||
| 25544 | Division by Two and Permutation | constructive algorithms flows graph matchings greedy math | Statement | C | Codeforces Round 764 (Div. 3) {1624} | PROGRAMMING | Codeforces Round #764 (Div. 3) Editorial | ||
| 3284 | Grid Xor | constructive algorithms greedy implementation interactive math | Statement | C | Codeforces Round 767 (Div. 1) {1628} | PROGRAMMING | 1250.0 | 99276 | |
| 18485 | OKEA | constructive algorithms math | Statement | C | Codeforces Round 770 (Div. 2) {1634} | PROGRAMMING | 1500.0 | Codeforces Round #770 (Div. 2) editorial | |
| 546 | Birthday | constructive algorithms math | Statement | G | Codeforces Global Round 19 {1637} | PROGRAMMING | 4000.0 | Tutorial | |
| 404 | Cycle Palindrome | constructive algorithms math | Statement | G | CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!) {1656} | PROGRAMMING | 3250.0 | Tutorial | |
| 20529 | Marin and Photoshoot | constructive algorithms math | Statement | A | Codeforces Round 779 (Div. 2) {1658} | PROGRAMMING | 500.0 | Codeforces Round #779 (Div. 2) Editorial | |
| 9580 | Shinju and the Lost Permutation | constructive algorithms math | Statement | C | Codeforces Round 779 (Div. 2) {1658} | PROGRAMMING | 1750.0 | Codeforces Round #779 (Div. 2) Editorial | |
| 21463 | 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 | |
| 24482 | GCD vs LCM | constructive algorithms math | Statement | A | Codeforces Round 781 (Div. 2) {1665} | PROGRAMMING | 500.0 | Codeforces Round #781 (Div. 2) Editorial | |
| 1729 | Half Queen Cover | constructive algorithms math | Statement | C | Codeforces Round 783 (Div. 1) {1667} | PROGRAMMING | 1500.0 | Codeforces Round #783 Editorial | 2400 |
| 16359 | Log Chopping | constructive algorithms games implementation math | Statement | A | Codeforces Global Round 20 {1672} | PROGRAMMING | 250.0 | Global Round 20 Editorial | 800 |
| 26921 | Number Transformation | constructive algorithms math | Statement | A | Codeforces Round 786 (Div. 3) {1674} | PROGRAMMING | 102482 | ||
| 15530 | 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 | |
| 260 | Hard Cut | constructive algorithms divide and conquer math | Statement | H | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 3250.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 3400 |
| 24231 | Digit Minimization | constructive algorithms games math | Statement | A | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 500.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 800 |
| 21274 | Z mod X = C | constructive algorithms math | Statement | B | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 750.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 800 |
| 10722 | The Enchanted Forest | constructive algorithms greedy math | Statement | A | Codeforces Round 796 (Div. 1) {1687} | PROGRAMMING | 500.0 | Editorial of Codeforces Round 796 | |
| 31128 | Beat The Odds | constructive algorithms greedy math | Statement | A | CodeCraft-22 and Codeforces Round 795 (Div. 2) {1691} | PROGRAMMING | 500.0 | Editorial for CodeCraft-22 and Codeforces Round #795 (Div. 2) | |
| 681 | Equal Reversal | constructive algorithms graphs math | Statement | F | Codeforces Round 803 (Div. 2) {1698} | PROGRAMMING | 2500.0 | Codeforces Round #803 (Div. 2) Editorial | |
| 24271 | The Third Three Number Problem | constructive algorithms math | Statement | A | Codeforces Round 804 (Div. 2) {1699} | PROGRAMMING | 500.0 | Codeforces Round #804 (Div. 2) Editorial | |
| 19279 | Palindromic Numbers | constructive algorithms implementation math | Statement | B | Codeforces Round 802 (Div. 2) {1700} | PROGRAMMING | 1000.0 | 103978 | 1100 |
| 5189 | Magical Array | constructive algorithms hashing math | Statement | D | CodeTON Round 2 (Div. 1 + Div. 2, Rated, Prizes!) {1704} | PROGRAMMING | 1750.0 | CodeTON Round 2 Editorial | |
| 22458 | Difference of GCDs | constructive algorithms math | Statement | B | Codeforces Round 808 (Div. 2) {1708} | PROGRAMMING | 1000.0 | 104930 | |
| 17935 | Build Permutation | constructive algorithms dp math | Statement | C | Codeforces Round 812 (Div. 2) {1713} | PROGRAMMING | 1750.0 | Codeforces Round #812 (Div. 2) Editorial | 1200 |
| 544 | Crop Squares | constructive algorithms geometry interactive math | Statement | F | Codeforces Round 816 (Div. 2) {1715} | PROGRAMMING | 3000.0 | Codeforces Round #816 (Div. 2) editorial | |
| 23810 | Crossmarket | constructive algorithms greedy math | Statement | A | Codeforces Round 816 (Div. 2) {1715} | PROGRAMMING | 500.0 | Codeforces Round #816 (Div. 2) editorial | |
| 24385 | Beautiful Array | constructive algorithms greedy math | Statement | B | Codeforces Round 816 (Div. 2) {1715} | PROGRAMMING | 1000.0 | Codeforces Round #816 (Div. 2) editorial | |
| 21616 | Permutation Chain | constructive algorithms math | Statement | B | Educational Codeforces Round 133 (Rated for Div. 2) {1716} | PROGRAMMING | 105653 | ||
| 124 | 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 | |
| 18704 | Mathematical Circus | constructive algorithms math | Statement | B | Codeforces Round 814 (Div. 2) {1719} | PROGRAMMING | 1000.0 | Codeforces Round #814 (Div. 1, Div. 2) Editorial | |
| 843 | Misha and Paintings | constructive algorithms math | Statement | E | Codeforces Round 815 (Div. 2) {1720} | PROGRAMMING | 2750.0 | Codeforces Round #815 (Div. 2) Editorial | |
| 2760 | Hot Black Hot White | constructive algorithms math | Statement | H | COMPFEST 14 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1725} | PROGRAMMING | Tutorial | ||
| 20180 | Rule of League | constructive algorithms math | Statement | B | Codeforces Round 821 (Div. 2) {1733} | PROGRAMMING | 1000.0 | Codeforces Round #821 (Div. 2) Editorial | |
| 20558 | Working Week | constructive algorithms greedy math | Statement | A | Codeforces Round 824 (Div. 2) {1735} | PROGRAMMING | 500.0 | Codeforces Round #824 — editorial | |
| 23243 | Array Recovery | constructive algorithms greedy math | Statement | B | Educational Codeforces Round 136 (Rated for Div. 2) {1739} | PROGRAMMING | Educational Codeforces Round 136 Editorial | ||
| 8480 | Knowledge Cards | constructive algorithms data structures greedy math | Statement | D | Codeforces Round 831 (Div. 1 + Div. 2) {1740} | PROGRAMMING | 1750.0 | Tutorial | 1500 |
| 25970 | Funny Permutation | constructive algorithms math | Statement | B | Codeforces Round 826 (Div. 3) {1741} | PROGRAMMING | 107908 | ||
| 13297 | Permutation Operations | constructive algorithms greedy implementation math | Statement | C | Codeforces Global Round 23 {1746} | PROGRAMMING | 1000.0 | Codeforces Global Round 23 Editorial | |
| 17358 | Indirect Sort | constructive algorithms math | Statement | A | CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!) {1750} | PROGRAMMING | 500.0 | CodeTON Round 3 (Div. 1 + Div. 2) Editorial | |
| 19250 | Kevin and Permutation | constructive algorithms constructive algorithms math | Statement | B | Codeforces Round 829 (Div. 2) {1754} | PROGRAMMING | 1000.0 | Tutorial | 800 |
| 9788 | Doremy's City Construction | constructive algorithms greedy math | Statement | C | Codeforces Global Round 24 {1764} | PROGRAMMING | 1500.0 | Codeforces Global Round 24 Editorial | |
| 22870 | Add Plus Minus Sign | constructive algorithms math | Statement | A | Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!) {1774} | PROGRAMMING | 500.0 | Polynomial Round 2022 (Div. 1 + Div. 2) Editorial | |
| 24259 | MKnez's ConstructiveForces Task | constructive algorithms math | Statement | B | Hello 2023 {1779} | PROGRAMMING | 750.0 | ||
| 721 | 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 | |
| 19587 | Exponential Equation | constructive algorithms math | Statement | A | TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) {1787} | PROGRAMMING | 500.0 | TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) Editorial | |
| 20921 | 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 | |
| 18064 | Matching Numbers | constructive algorithms greedy math | Statement | C | Codeforces Round 851 (Div. 2) {1788} | PROGRAMMING | 1500.0 | Codeforces Round #851 (Div. 2) Editorial | |
| 16318 | Fedya and Array | constructive algorithms math | Statement | B | Codeforces Round 852 (Div. 2) {1793} | PROGRAMMING | 1000.0 | Codeforces Round #852 Editorial | |
| 26557 | Not Dividing | constructive algorithms greedy math | Statement | B | Codeforces Round 856 (Div. 2) {1794} | PROGRAMMING | 1000.0 | Codeforces Round 856 (Div. 2) Editorial | |
| 11085 | Shocking Arrangement | constructive algorithms greedy math | Statement | D | Codeforces Round 860 (Div. 2) {1798} | PROGRAMMING | 1750.0 | Editorial of Codeforces Round 860 (Div. 2) | 1600 |
| 1287 | 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 |