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Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 14293 | 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 | |
| 2412 | 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 | |
| 3405 | 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) | |
| 16344 | Putting Plates | constructive algorithms implementation | Statement | B | Codeforces Round 733 (Div. 1 + Div. 2, based on VK Cup 2021 - Elimination (Engine)) {1530} | PROGRAMMING | 750.0 | Codeforces Round #733 Editorial (all problems) | |
| 1116 | Game with Cards | binary search constructive algorithms data structures dp implementation | Statement | E | Codeforces Round 727 (Div. 2) {1539} | PROGRAMMING | 2000.0 | tutorial | 2500 |
| 30907 | Pretty Permutations | constructive algorithms greedy implementation | Statement | A | Codeforces Round 728 (Div. 2) {1541} | PROGRAMMING | 500.0 | Tutorial | |
| 2110 | 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 | ||
| 3052 | Domino (hard version) | constructive algorithms implementation math | Statement | D2 | Codeforces Round 734 (Div. 3) {1551} | PROGRAMMING | Editorial for Codeforces Round #734 (Div.3) | ||
| 24550 | Coin Rows | brute force constructive algorithms dp implementation | Statement | C | Educational Codeforces Round 112 (Rated for Div. 2) {1555} | PROGRAMMING | 93389 | 1300 | |
| 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 | |
| 895 | One-Four Overload | 2-sat constructive algorithms dfs and similar geometry graphs implementation | Statement | F | Codeforces Round 742 (Div. 2) {1567} | PROGRAMMING | 2750.0 | Codeforces Round #742 Editorial | |
| 4958 | Expression Evaluation Error | constructive algorithms greedy implementation math | Statement | D | Codeforces Round 742 (Div. 2) {1567} | PROGRAMMING | 1750.0 | Codeforces Round #742 Editorial | |
| 374 | Sweepstake | *special brute force constructive algorithms implementation math | Statement | D | Kotlin Heroes: Episode 8 {1571} | PROGRAMMING | Kotlin Heroes 8 Editorial | ||
| 1114 | Coloring | combinatorics constructive algorithms implementation | Statement | E | Educational Codeforces Round 114 (Rated for Div. 2) {1574} | PROGRAMMING | 95188 | ||
| 14831 | Divine Array | constructive algorithms implementation | Statement | B | Codeforces Round 751 (Div. 2) {1602} | PROGRAMMING | 1000.0 | 95865 | 1100 |
| 1633 | Red-Blue Matrix | constructive algorithms data structures hashing implementation sortings two pointers | Statement | D | Educational Codeforces Round 116 (Rated for Div. 2) {1606} | PROGRAMMING | 96454 | ||
| 720 | Mashtali: a Space Oddysey | constructive algorithms dfs and similar graphs implementation | Statement | F | Codeforces Global Round 17 {1610} | PROGRAMMING | 2750.0 | Codeforces Global Round 17 Editorial | |
| 17195 | Anti Light's Cell Guessing | constructive algorithms implementation math | Statement | A | Codeforces Global Round 17 {1610} | PROGRAMMING | 500.0 | Codeforces Global Round 17 Editorial | |
| 23374 | Equal or Not Equal | constructive algorithms implementation | Statement | A | Educational Codeforces Round 119 (Rated for Div. 2) {1620} | PROGRAMMING | 98061 | ||
| 4693 | Masha-forgetful | brute force constructive algorithms dp hashing implementation strings | Statement | E | Codeforces Round 764 (Div. 3) {1624} | PROGRAMMING | Codeforces Round #764 (Div. 3) Editorial | ||
| 24998 | Not Shading | constructive algorithms implementation | Statement | A | Codeforces Round 766 (Div. 2) {1627} | PROGRAMMING | 500.0 | Codeforces Round #766 (Div. 2) Editorial | |
| 3711 | Grid Xor | constructive algorithms greedy implementation interactive math | Statement | C | Codeforces Round 767 (Div. 1) {1628} | PROGRAMMING | 1250.0 | 99276 | |
| 4120 | Repetitions Decoding | constructive algorithms implementation sortings | Statement | B | Codeforces Round 773 (Div. 1) {1641} | PROGRAMMING | 1250.0 | Codeforces Round #773 editorial | |
| 21395 | Anti-Fibonacci Permutation | brute force constructive algorithms implementation | Statement | B | Educational Codeforces Round 123 (Rated for Div. 2) {1644} | PROGRAMMING | 100227 | ||
| 4521 | Weight the Tree | constructive algorithms dfs and similar dp implementation trees | Statement | D | Codeforces Round 774 (Div. 2) {1646} | PROGRAMMING | 2000.0 | Codeforces Round #774 (Div. 2) Editorial | 2000 |
| 709 | 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 |
| 4504 | 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 | |
| 34030 | 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 | |
| 8179 | Matrix and Shifts | constructive algorithms greedy implementation | Statement | E | Codeforces Round 780 (Div. 3) {1660} | PROGRAMMING | Codeforces Round #780 (Div. 3) Editorial | ||
| 14131 | Unequal Array | constructive algorithms greedy implementation | Statement | C | Codeforces Global Round 20 {1672} | PROGRAMMING | 750.0 | Global Round 20 Editorial | 1100 |
| 7010 | Cyclic Rotation | constructive algorithms greedy implementation two pointers | Statement | D | Codeforces Global Round 20 {1672} | PROGRAMMING | 1000.0 | Global Round 20 Editorial | 1700 |
| 16916 | Log Chopping | constructive algorithms games implementation math | Statement | A | Codeforces Global Round 20 {1672} | PROGRAMMING | 250.0 | Global Round 20 Editorial | 800 |
| 16537 | I love AAAB | constructive algorithms implementation | Statement | B | Codeforces Global Round 20 {1672} | PROGRAMMING | 500.0 | Global Round 20 Editorial | 800 |
| 17951 | A-B-C Sort | constructive algorithms implementation sortings | Statement | D | Codeforces Round 786 (Div. 3) {1674} | PROGRAMMING | 102482 | ||
| 16717 | 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 | |
| 13360 | Column Swapping | constructive algorithms implementation sortings | Statement | C | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 1250.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 1400 |
| 7876 | Max GEQ Sum | binary search constructive algorithms data structures divide and conquer implementation sortings two pointers | Statement | D | CodeCraft-22 and Codeforces Round 795 (Div. 2) {1691} | PROGRAMMING | 1750.0 | Editorial for CodeCraft-22 and Codeforces Round #795 (Div. 2) | |
| 38471 | Shoe Shuffling | constructive algorithms greedy implementation two pointers | Statement | B | CodeCraft-22 and Codeforces Round 795 (Div. 2) {1691} | PROGRAMMING | 750.0 | Editorial for CodeCraft-22 and Codeforces Round #795 (Div. 2) | |
| 12696 | Fishingprince Plays With Array | constructive algorithms greedy implementation | Statement | C | Codeforces Global Round 21 {1696} | PROGRAMMING | 1500.0 | Editorial of Codeforces Global Round 21 | |
| 1493 | Coloring | brute force combinatorics constructive algorithms dfs and similar dp dsu graphs implementation | Statement | E | Educational Codeforces Round 130 (Rated for Div. 2) {1697} | PROGRAMMING | 103835 | ||
| 15988 | awoo's Favorite Problem | constructive algorithms data structures dp greedy implementation strings two pointers | Statement | C | Educational Codeforces Round 130 (Rated for Div. 2) {1697} | PROGRAMMING | 103835 | ||
| 21560 | Rising Sand | constructive algorithms greedy implementation | Statement | B | Codeforces Round 803 (Div. 2) {1698} | PROGRAMMING | 500.0 | Codeforces Round #803 (Div. 2) Editorial | |
| 20121 | Palindromic Numbers | constructive algorithms implementation math | Statement | B | Codeforces Round 802 (Div. 2) {1700} | PROGRAMMING | 1000.0 | 103978 | 1100 |
| 3765 | Build a Tree and That Is It | brute force constructive algorithms greedy implementation trees | Statement | F | Codeforces Round 811 (Div. 3) {1714} | PROGRAMMING | Codeforces Round #811 (Div. 3) Editorial | ||
| 255 | 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 | |
| 17921 | Bestie | brute force constructive algorithms implementation math number theory | Statement | A | Codeforces Round 830 (Div. 2) {1732} | PROGRAMMING | 750.0 | 108327 | 1000 |
| 14211 | Permutation Operations | constructive algorithms greedy implementation math | Statement | C | Codeforces Global Round 23 {1746} | PROGRAMMING | 1000.0 | Codeforces Global Round 23 Editorial | |
| 14868 | Elimination of a Ring | constructive algorithms greedy implementation | Statement | B | Pinely Round 1 (Div. 1 + Div. 2) {1761} | PROGRAMMING | 1000.0 | Pinely Round 1 (Div. 1 + Div. 2) Editorial | |
| 18797 | Make Array Good | constructive algorithms implementation number theory sortings | Statement | B | Codeforces Round 838 (Div. 2) {1762} | PROGRAMMING | 1000.0 | Codeforces Round #838 (Div. 2) Editorial | |
| 15891 | Elemental Decompress | constructive algorithms greedy implementation sortings | Statement | C | Codeforces Round 842 (Div. 2) {1768} | PROGRAMMING | 1500.0 | Codeforces Round #842 (Div. 2) Editorial | |
| 9460 | Same Count One | brute force constructive algorithms implementation two pointers | Statement | D | Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!) {1774} | PROGRAMMING | 1500.0 | Polynomial Round 2022 (Div. 1 + Div. 2) Editorial | |
| 852 | 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 | |
| 22725 | 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 | |
| 1975 | Serval and Shift-Shift-Shift | bitmasks brute force constructive algorithms implementation | Statement | D | Codeforces Round 853 (Div. 2) {1789} | PROGRAMMING | 1750.0 | Codeforces Round #853 (Div. 2) Editorial | |
| 1443 | 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 | |
| 7059 | 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 | |
| 8811 | Umka and a Long Flight | constructive algorithms implementation math | Statement | D | Codeforces Round 863 (Div. 3) {1811} | PROGRAMMING | 114788 | ||
| 3709 | Sum Graph | constructive algorithms graphs implementation interactive math shortest paths trees | Statement | B | Codeforces Round 865 (Div. 1) {1815} | PROGRAMMING | 1250.0 | Editorial of Codeforces Round #865 | 2000 |
| 1056 | Toy Machine | constructive algorithms games implementation | Statement | D | Codeforces Round 869 (Div. 1) {1817} | PROGRAMMING | 2000.0 | Codeforces Round #869 (Div.1, Div.2) Editorial | |
| 1787 | The Fox and the Complete Tree Traversal | constructive algorithms dp games implementation math trees | Statement | C | Codeforces Round 866 (Div. 1) {1819} | PROGRAMMING | 1500.0 | Codeforces Round #866 (Div.1, Div.2, based on Lipetsk Team Olympiad) Editorial | |
| 2424 | Red-Blue Operations (Hard Version) | binary search constructive algorithms greedy implementation math | Statement | D2 | Educational Codeforces Round 148 (Rated for Div. 2) {1832} | PROGRAMMING | 116454 | 2400 | |
| 5682 | Survey in Class | constructive algorithms data structures greedy implementation sortings | Statement | D | Codeforces Round 879 (Div. 2) {1834} | PROGRAMMING | 1750.0 | Codeforces Round #879 Editorial | |
| 3795 | Bracket Walk | constructive algorithms data structures implementation sortings strings | Statement | D | Codeforces Round 877 (Div. 2) {1838} | PROGRAMMING | 1750.0 | Codeforces Round #877 (Div. 2) Editorial | |
| 18138 | Particles | constructive algorithms greedy implementation math | Statement | C | Codeforces Round 884 (Div. 1 + Div. 2) {1844} | PROGRAMMING | 1250.0 | Codeforces Round #884 (Div. 1 + Div. 2) Editorial | |
| 3879 | Rudolph and Mimic | constructive algorithms greedy implementation interactive | Statement | F | Codeforces Round 883 (Div. 3) {1846} | PROGRAMMING | |||
| 21892 | Rudolf and the Another Competition | constructive algorithms greedy implementation sortings | Statement | C | Codeforces Round 883 (Div. 3) {1846} | PROGRAMMING | |||
| 31779 | Escalator Conversations | brute force constructive algorithms implementation math | Statement | A | Codeforces Round 888 (Div. 3) {1851} | PROGRAMMING | 118667 | ||
| 27909 | Good Arrays | constructive algorithms implementation math | Statement | B | Codeforces Round 890 (Div. 2) supported by Constructor Institute {1856} | PROGRAMMING | 750.0 | Codeforces Round #890 (Div. 2) Editorial | |
| 26213 | Prime Deletion | constructive algorithms implementation | Statement | A | Educational Codeforces Round 154 (Rated for Div. 2) {1861} | PROGRAMMING | Educational Codeforces Round 154 Editorial | ||
| 21549 | Increasing and Decreasing | constructive algorithms implementation math | Statement | A | Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) {1864} | PROGRAMMING | 500.0 | Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2) Editorial | |
| 7013 | Cyclic Operations | constructive algorithms dfs and similar graphs greedy implementation | Statement | D | Codeforces Round 897 (Div. 2) {1867} | PROGRAMMING | 2000.0 | ||
| 2817 | Candy Party (Hard Version) | bitmasks constructive algorithms dp graphs greedy implementation math | Statement | B2 | Codeforces Round 896 (Div. 1) {1868} | PROGRAMMING | 750.0 | Codeforces Round 896 (Div. 1, Div. 2) Editorial | |
| 8469 | Candy Party (Easy Version) | bitmasks constructive algorithms graphs greedy implementation math | Statement | B1 | Codeforces Round 896 (Div. 1) {1868} | PROGRAMMING | 500.0 | Codeforces Round 896 (Div. 1, Div. 2) Editorial | |
| 437 | Flower-like Pseudotree | constructive algorithms graphs implementation trees | Statement | D | Codeforces Round 896 (Div. 1) {1868} | PROGRAMMING | 1750.0 | Codeforces Round 896 (Div. 1, Div. 2) Editorial | |
| 13778 | Fill in the Matrix | constructive algorithms implementation | Statement | A | Codeforces Round 896 (Div. 1) {1868} | PROGRAMMING | 500.0 | Codeforces Round 896 (Div. 1, Div. 2) Editorial | |
| 1624 | Interactive Game with Coloring | brute force constructive algorithms graphs implementation interactive math trees | Statement | E | Educational Codeforces Round 155 (Rated for Div. 2) {1879} | PROGRAMMING | 120773 | 2400 | |
| 1017 | Bracket Xoring | constructive algorithms implementation | Statement | F | CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} | PROGRAMMING | 2750.0 | CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial | |
| 6649 | Colorful Grid | constructive algorithms implementation | Statement | C | Codeforces Round 910 (Div. 2) {1898} | PROGRAMMING | 1750.0 | Editorial for Codeforces Round #910 (Div. 2) | |
| 2763 | Transitive Graph | constructive algorithms dfs and similar dp graphs implementation | Statement | E | Codeforces Round 911 (Div. 2) {1900} | PROGRAMMING | 2250.0 | Codeforces Round 911 (Div. 2) Editorial | |
| 72790 | Cover in Water | constructive algorithms implementation | Statement | A | Codeforces Round 911 (Div. 2) {1900} | PROGRAMMING | 500.0 | Codeforces Round 911 (Div. 2) Editorial | |
| 5879 | Set To Max (Hard Version) | binary search constructive algorithms data structures dsu greedy implementation sortings two pointers | Statement | D2 | Codeforces Round 914 (Div. 2) {1904} | PROGRAMMING | 750.0 | Codeforces Round 914 (Div. 2) Editorial | |
| 4783 | Cyclic MEX | binary search constructive algorithms data structures implementation math two pointers | Statement | D | Codeforces Round 915 (Div. 2) {1905} | PROGRAMMING | 2000.0 | Codeforces Round 915 (Div. 2) Editorial | |
| 2594 | Merge Not Sort | constructive algorithms dp | Statement | E | 2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred) {1906} | PROGRAMMING | problem_analysis.pdf | ||
| 2452 | Lights | constructive algorithms dfs and similar graphs greedy implementation | Statement | G | Codeforces Round 913 (Div. 3) {1907} | PROGRAMMING | Codeforces Round 913 (Div. 3) Editorial | ||
| 1307 | Evaluate It and Back Again | constructive algorithms implementation math | Statement | E | 2023-2024 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1912} | PROGRAMMING | Tutorials (PDF) | 2200 | |
| 9914 | Mathematical Problem | brute force constructive algorithms implementation math strings | Statement | D | Good Bye 2023 {1916} | PROGRAMMING | 1500.0 | ||
| 20164 | Training Before the Olympiad | constructive algorithms games implementation math | Statement | C | Good Bye 2023 {1916} | PROGRAMMING | 1250.0 | ||
| 28541 | 2023 | constructive algorithms implementation math number theory | Statement | A | Good Bye 2023 {1916} | PROGRAMMING | 250.0 | ||
| 27627 | Minimize Inversions | constructive algorithms data structures greedy implementation sortings | Statement | B | Codeforces Round 922 (Div. 2) {1918} | PROGRAMMING | 1000.0 | Codeforces Round #922 (Div. 2) Editorial | |
| 32665 | Brick Wall | constructive algorithms greedy implementation math | Statement | A | Codeforces Round 922 (Div. 2) {1918} | PROGRAMMING | 500.0 | Codeforces Round #922 (Div. 2) Editorial | |
| 29063 | Tricky Template | constructive algorithms implementation strings | Statement | A | Educational Codeforces Round 161 (Rated for Div. 2) {1922} | PROGRAMMING | Educational Codeforces Round 161 Editorial | ||
| 2162 | Vlad and Avoiding X | bitmasks brute force constructive algorithms dfs and similar dp implementation | Statement | F | Codeforces Round 928 (Div. 4) {1926} | PROGRAMMING | 126132 | ||
| 2269 | Modular Sequence | constructive algorithms dp greedy implementation math number theory | Statement | E | Codeforces Round 924 (Div. 2) {1928} | PROGRAMMING | 2250.0 | Codeforces Round 924 Editorial | |
| 693 | Andrey's Tree | binary search constructive algorithms dsu greedy implementation trees | Statement | F | Codeforces Round 932 (Div. 2) {1935} | PROGRAMMING | 3000.0 | Codeforces Round #932 (Div. 2) Editorial | |
| 275 | Three Arrays | *special constructive algorithms implementation sortings | Statement | B | XVIII Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules) {1940} | PROGRAMMING | |||
| 955 | Cook and Porridge | binary search constructive algorithms data structures implementation | Statement | G | Codeforces Round 935 (Div. 3) {1945} | PROGRAMMING | 127377 | ||
| 5719 | Birthday Gift | bitmasks brute force constructive algorithms greedy implementation | Statement | D | Codeforces Round 936 (Div. 2) {1946} | PROGRAMMING | 1750.0 | Codeforces Round #936 (Div. 2) Editorial | |
| 4625 | No Palindromes | brute force constructive algorithms greedy hashing implementation strings | Statement | E | Codeforces Global Round 25 {1951} | PROGRAMMING | 2250.0 | Codeforces Global Round 25 Editorial | |
| 913 | Help, what does it mean to be "Based" | brute force combinatorics constructive algorithms games implementation sortings | Statement | J | April Fools Day Contest 2024 {1952} | PROGRAMMING | April Fools Day Contest 2024 Editorial | ||
| 32903 | Progressive Square | constructive algorithms data structures implementation sortings | Statement | B | Codeforces Round 938 (Div. 3) {1955} | PROGRAMMING | 128243 | ||
| 4888 | Nene and the Mex Operator | bitmasks brute force constructive algorithms divide and conquer dp greedy implementation | Statement | D | Codeforces Round 939 (Div. 2) {1956} | PROGRAMMING | 1750.0 | [Editorial] Codeforces Round 939 (Div. 2) | |
| 20812 | A BIT of a Construction | bitmasks constructive algorithms greedy implementation | Statement | B | Codeforces Round 940 (Div. 2) and CodeCraft-23 {1957} | PROGRAMMING | 1000.0 | Codeforces Round #940 and CodeCraft-23 (Div. 2) Editorial | 1100 |
| 17528 | Rectangle Filling | constructive algorithms implementation | Statement | B | Codeforces Round 941 (Div. 2) {1966} | PROGRAMMING | 1000.0 | Codeforces Round #941 (Div. 1, Div. 2) Editorial | 1100 |
| 22369 | Two Friends | constructive algorithms implementation math | Statement | A | Educational Codeforces Round 165 (Rated for Div. 2) {1969} | PROGRAMMING | Educational Codeforces Round 165 Editorial | 800 | |
| 10028 | Cat, Fox and Double Maximum | constructive algorithms greedy implementation math sortings | Statement | C | Codeforces Round 945 (Div. 2) {1973} | PROGRAMMING | 1500.0 | Editorial for Codeforces Round #945 (Div. 2) | 1700 |
| 18120 | Ingenuity-2 | constructive algorithms greedy implementation | Statement | D | Codeforces Round 946 (Div. 3) {1974} | PROGRAMMING | Codeforces Round #946 (Div. 3) Editorial | 1400 | |
| 18132 | Manhattan Permutations | constructive algorithms greedy implementation math | Statement | C | Codeforces Round 953 (Div. 2) {1978} | PROGRAMMING | 1250.0 | 130527 | |
| 6470 | Turtle and an Incomplete Sequence | bitmasks constructive algorithms greedy implementation math | Statement | C | Codeforces Round 949 (Div. 2) {1981} | PROGRAMMING | 1500.0 | Simplified Chinese Tutorial | |
| 18674 | Corner Twist | constructive algorithms greedy implementation math | Statement | B | Codeforces Round 956 (Div. 2) and ByteRace 2024 {1983} | PROGRAMMING | 1000.0 | ||
| 21294 | Large Addition | constructive algorithms implementation math | Statement | B | Codeforces Global Round 26 {1984} | PROGRAMMING | 750.0 | Codeforces Global Round 26 Editorial | |
| 307 | Magic Trick II | constructive algorithms implementation sortings | Statement | G | Codeforces Global Round 26 {1984} | PROGRAMMING | 4000.0 | Codeforces Global Round 26 Editorial | |
| 10504 | Squaring | brute force constructive algorithms data structures greedy implementation math number theory | Statement | C | Codeforces Round 961 (Div. 2) {1995} | PROGRAMMING | 1750.0 | Video Tutorial | |
| 26318 | Find K Distinct Points with Fixed Center | constructive algorithms implementation math | Statement | A | Codeforces Round 965 (Div. 2) {1998} | PROGRAMMING | 500.0 | Video Tutorial | |
| 26321 | Generate Permutation | constructive algorithms greedy implementation | Statement | B | Codeforces Round 967 (Div. 2) {2001} | PROGRAMMING | 1000.0 | Video Tutorial | |
| 5200 | DFS Checker (Easy Version) | constructive algorithms data structures dfs and similar hashing implementation | Statement | D1 | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) {2002} | PROGRAMMING | 1250.0 | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial | |
| 2947 | DFS Checker (Hard Version) | constructive algorithms data structures dfs and similar hashing implementation trees | Statement | D2 | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) {2002} | PROGRAMMING | 1250.0 | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial | |
| 21486 | Distanced Coloring | constructive algorithms implementation math | Statement | A | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) {2002} | PROGRAMMING | 500.0 | EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2) Editorial | |
| 4618 | Adjust The Presentation (Hard Version) | constructive algorithms data structures greedy implementation | Statement | C2 | Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round) {2021} | PROGRAMMING | 1000.0 | Codeforces Round #977 (Div. 2, based on COMPFEST 16 — Final Round) Editorial | |
| 4170 | Asesino (Easy Version) | binary search constructive algorithms implementation interactive | Statement | D1 | Codeforces Round 978 (Div. 2) {2022} | PROGRAMMING | 1750.0 | Codeforces Round 978 (Div 2) Editorial | |
| 3856 | Alice's Adventures in Cards | constructive algorithms data structures dfs and similar dp graphs greedy implementation shortest paths | Statement | D | Codeforces Round 986 (Div. 2) {2028} | PROGRAMMING | 1750.0 | Codeforces Round 986 (Div. 2) Editorial | |
| 1433 | Balanced | constructive algorithms data structures implementation math | Statement | E | Codeforces Round 983 (Div. 2) {2032} | PROGRAMMING | 2250.0 | Codeforces Round 983 (Div. 2) Editorial | |
| 21171 | Medians | constructive algorithms greedy hashing implementation math | Statement | B | Codeforces Round 983 (Div. 2) {2032} | PROGRAMMING | 750.0 | Codeforces Round 983 (Div. 2) Editorial | |
| 2066 | Permutations Harmony | brute force combinatorics constructive algorithms greedy hashing implementation math | Statement | E | Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2) {2034} | PROGRAMMING | 2000.0 | Rayan 2024 Selection Round Editorial | |
| 9430 | Trapped in the Witch's Labyrinth | constructive algorithms dfs and similar graphs implementation | Statement | C | Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2) {2034} | PROGRAMMING | 1500.0 | Rayan 2024 Selection Round Editorial | |
| 6838 | Darius' Wisdom | constructive algorithms greedy implementation sortings | Statement | D | Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2) {2034} | PROGRAMMING | 1500.0 | Rayan 2024 Selection Round Editorial | |
| 17748 | Shohag Loves Strings | constructive algorithms greedy implementation strings | Statement | B | CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!) {2039} | PROGRAMMING | 1000.0 | Editorial of CodeTON Round 9 (Div. 1 + Div. 2) | |
| 107 | Cool Swap Walk (Easy Version) | constructive algorithms implementation implementation sortings sortings | Statement | H1 | CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!) {2039} | PROGRAMMING | 2250.0 | Editorial of CodeTON Round 9 (Div. 1 + Div. 2) | |
| 102 | Cool Swap Walk (Hard Version) | constructive algorithms constructive algorithms constructive algorithms implementation sortings | Statement | H2 | CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!) {2039} | PROGRAMMING | 2500.0 | Editorial of CodeTON Round 9 (Div. 1 + Div. 2) | 3500 |
| 19338 | pspspsps | brute force constructive algorithms implementation | Statement | B | Codeforces Round 994 (Div. 2) {2049} | PROGRAMMING | 750.0 | Codeforces Round #994 (Div. 2) Editorial | |
| 14031 | MEX Cycle | constructive algorithms greedy implementation | Statement | C | Codeforces Round 994 (Div. 2) {2049} | PROGRAMMING | 1000.0 | Codeforces Round #994 (Div. 2) Editorial | |
| 28662 | Preparing for the Exam | constructive algorithms implementation | Statement | C | Codeforces Round 995 (Div. 3) {2051} | PROGRAMMING | 137623 | ||
| 86 | Delicate Anti-monotonous Operations | constructive algorithms implementation | Statement | H | Good Bye 2024: 2025 is NEAR {2053} | PROGRAMMING | 4500.0 | Good Bye 2024: 2025 is NEAR Editorial | |
| 15037 | Kevin and Geometry | brute force constructive algorithms data structures geometry greedy implementation math two pointers | Statement | B | IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) {2061} | PROGRAMMING | 1000.0 | IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) Editorial | |
| 57270 | Skibidus and Amog'u | brute force constructive algorithms implementation strings | Statement | A | Codeforces Round 1003 (Div. 4) {2065} | PROGRAMMING | Video Tutorial | ||
| 5620 | White Magic | constructive algorithms greedy implementation | Statement | B | Codeforces Round 1004 (Div. 1) {2066} | PROGRAMMING | 750.0 | 139415 | |
| 1135 | Infinite Sequence (Hard Version) | bitmasks constructive algorithms data structures dp implementation math | Statement | D2 | Codeforces Round 1007 (Div. 2) {2071} | PROGRAMMING | 1250.0 | Codeforces Round 1007 (Div. 2) Editorial | |
| 3801 | Finding OR Sum | bitmasks constructive algorithms implementation interactive math | Statement | B | Codeforces Round 1008 (Div. 1) {2077} | PROGRAMMING | 1000.0 | Codeforces Round 1008 (Div. 1, Div. 2) Editorial | |
| 18705 | Vicious Labyrinth | constructive algorithms graphs greedy implementation math | Statement | B | Codeforces Round 1008 (Div. 2) {2078} | PROGRAMMING | 750.0 | Codeforces Round 1008 (Div. 1, Div. 2) Editorial | |
| 12114 | You Soared Afar With Grace | constructive algorithms greedy implementation | Statement | C | Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2) {2084} | PROGRAMMING | 1500.0 | 141155 | |
| 24037 | Serval and String Theory | constructive algorithms implementation | Statement | A | Codeforces Round 1011 (Div. 2) {2085} | PROGRAMMING | 500.0 | Codeforces Round #1011 (Div. 2) Editorial | |
| 17552 | Serval and Final MEX | constructive algorithms implementation | Statement | B | Codeforces Round 1011 (Div. 2) {2085} | PROGRAMMING | 1250.0 | Codeforces Round #1011 (Div. 2) Editorial | |
| 7038 | Mishkin Energizer | brute force constructive algorithms greedy implementation strings | Statement | D | Codeforces Round 1014 (Div. 2) {2092} | PROGRAMMING | 1750.0 | Codeforces Round #1014 (Div. 2) Editorial | |
| 15647 | Mex in the Grid | constructive algorithms implementation | Statement | A | Codeforces Round 1024 (Div. 1) {2101} | PROGRAMMING | 500.0 | 142788 | |
| 4088 | Local Construction | constructive algorithms dfs and similar graphs implementation two pointers | Statement | D | Codeforces Round 1019 (Div. 2) {2103} | PROGRAMMING | 2000.0 | 142149 | |
| 12582 | Maximum Subarray Sum | binary search constructive algorithms implementation math | Statement | C | Codeforces Round 1023 (Div. 2) {2107} | PROGRAMMING | 1500.0 | Codeforces Round 1023 (Div 2) Editorial | |
| 14984 | SUMdamental Decomposition | bitmasks constructive algorithms greedy implementation math | Statement | B | Codeforces Round 1022 (Div. 2) {2108} | PROGRAMMING | 1250.0 | Codeforces Round 1022 Editorial | |
| 941 | Spruce Dispute | constructive algorithms dfs and similar graphs implementation shortest paths trees | Statement | E | Codeforces Round 1022 (Div. 2) {2108} | PROGRAMMING | 2750.0 | Codeforces Round 1022 Editorial | |
| 28694 | Difficult Contest | constructive algorithms implementation sortings strings | Statement | A | Educational Codeforces Round 181 (Rated for Div. 2) {2125} | PROGRAMMING | Educational Codeforces Round 181 Editorial | ||
| 147 | Inter Active (Hard Version) | binary search bitmasks constructive algorithms graphs implementation interactive math probabilities | Statement | G2 | Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) {2127} | PROGRAMMING | 2750.0 | Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2) Editorial | |
| 27557 | Painting With Two Colors | constructive algorithms implementation math | Statement | A | Codeforces Round 1045 (Div. 2) {2134} | PROGRAMMING | 500.0 | 145832 | |
| 3479 | Palindrome Flipping | brute force constructive algorithms implementation strings | Statement | D | Codeforces Round 1067 (Div. 2) {2158} | PROGRAMMING | 2000.0 | Codeforces Round 1067 (Div. 2) Editorial | |
| 9553 | MAD Interactive Problem | constructive algorithms implementation interactive | Statement | A | Codeforces Round 1058 (Div. 1) {2159} | PROGRAMMING | 750.0 | Codeforces Round 1058 Editorial | |
| 37551 | Isamatdin and His Magic Wand! | constructive algorithms greedy implementation sortings | Statement | C | Codeforces Round 1062 (Div. 4) {2167} | PROGRAMMING | Arpa Video Tutorial | ||
| 2397 | Removal of a Sequence (Hard Version) | binary search constructive algorithms divide and conquer greedy implementation math number theory probabilities | Statement | D2 | Educational Codeforces Round 184 (Rated for Div. 2) {2169} | PROGRAMMING | Educational Codeforces Round 184 Editorial | ||
| 1773 | Almost Roman | constructive algorithms greedy implementation | Statement | D | Educational Codeforces Round 185 (Rated for Div. 2) {2170} | PROGRAMMING | Educational Codeforces Round 185 Editorial | ||
| 7771 | Rae Taylor and Trees (hard version) | binary search constructive algorithms data structures dp dsu implementation trees | Statement | F | Codeforces Round 1065 (Div. 3) {2171} | PROGRAMMING | Codeforces Round 1065 (Div. 3) Editorial | ||
| 6514 | Number Maze | constructive algorithms implementation | Statement | E | 2025 ICPC Asia Taichung Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams) {2172} | PROGRAMMING | |||
| 7052 | Xmas or Hysteria | constructive algorithms graphs greedy implementation | Statement | D | Good Bye 2025 {2178} | PROGRAMMING | 1750.0 | ||
| 2622 | Tree Coloring (Hard Version) | constructive algorithms data structures dfs and similar greedy implementation trees | Statement | D2 | Hello 2026 {2183} | PROGRAMMING | 2000.0 | ||
| 522 | Codeforces Heuristic Contest 001 | brute force constructive algorithms geometry implementation | Statement | H | Codeforces Round 1080 (Div. 3) {2195} | PROGRAMMING | Codeforces Round 1080 (Div. 3) Editorial | ||
| 9351 | The 67th Tree Problem | constructive algorithms implementation trees | Statement | F | Codeforces Round 1090 (Div. 4) {2218} | PROGRAMMING | Codeforces Round 1090 (Div. 4) Editorial | ||
| 14574 | Palindromex | binary search brute force constructive algorithms data structures greedy implementation two pointers | Statement | D | Codeforces Round 1096 (Div. 3) {2227} | PROGRAMMING | Codeforces Round 1096 (Div. 3) — Editorial | ||
| 3887 | Maximum Prefix Sums | constructive algorithms greedy implementation two pointers | Statement | D | Codeforces Round 1099 (Div. 2) {2231} | PROGRAMMING | 2000.0 | ||
| 1540 | Product of Closures | bitmasks brute force constructive algorithms dp greedy implementation math | Statement | E | Educational Codeforces Round 192 (Rated for Div. 2) {2242} | PROGRAMMING | 155047 | ||
| 2127 | Construct an Array (Hard Version) | 2-sat constructive algorithms dfs and similar implementation | Statement | D2 | Spectral::Cup 2026 Round 3 (Codeforces Round 1110, Div. 1 + Div. 2) {2245} | PROGRAMMING | 1000.0 | Spectral::Cup 2026 Round 3 (Codeforces Round 1110, Div. 1 + Div. 2) Editorial |