Review the problem statement from Codeforces (link will open a new tab). When you've matched your problem, go to the solutions.
Search on plain tags, ratings, names, and problem text. Example: brute force or binary search
< 1 2 3 >Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 31466 | Zero Remainder Array | math sortings two pointers | Statement | D | Codeforces Round 653 (Div. 3) {1374} | PROGRAMMING | 79517 | ||
| 6118 | Choosing flowers | binary search data structures greedy math sortings two pointers | Statement | C | Codeforces Round 657 (Div. 2) {1379} | PROGRAMMING | 1250.0 | Codeforces Round #657 Editorial | 2000 |
| 1152 | New Passenger Trams | brute force data structures sortings two pointers | Statement | D | Codeforces Round 657 (Div. 2) {1379} | PROGRAMMING | 1500.0 | Codeforces Round #657 Editorial | 2400 |
| 14385 | Prefix Flip (Hard Version) | constructive algorithms data structures strings two pointers | Statement | A2 | Codeforces Round 658 (Div. 1) {1381} | PROGRAMMING | 500.0 | Codeforces Round #658 Editorial | 1700 |
| 9595 | Unmerge | combinatorics dp two pointers | Statement | B | Codeforces Round 658 (Div. 1) {1381} | PROGRAMMING | 1500.0 | Codeforces Round #658 Editorial | 1800 |
| 826 | The Majestic Brown Tree Snake | dfs and similar dp greedy trees two pointers | Statement | D | Codeforces Round 658 (Div. 1) {1381} | PROGRAMMING | 2500.0 | Codeforces Round #658 Editorial | 3000 |
| 20631 | Good String | brute force dp greedy implementation two pointers | Statement | C | Educational Codeforces Round 92 (Rated for Div. 2) {1389} | PROGRAMMING | 80809 | ||
| 7130 | Boboniu Chats with Du | brute force dp greedy sortings two pointers | Statement | A | Codeforces Round 664 (Div. 1) {1394} | PROGRAMMING | 500.0 | Codeforces Round #664 Editorial | 1800 |
| 1403 | Controversial Rounds | binary search data structures dp dsu two pointers | Statement | F | Educational Codeforces Round 93 (Rated for Div. 2) {1398} | PROGRAMMING | Educational Codeforces Round 93 Editorial | ||
| 2534 | Weights Division (hard version) | binary search data structures dfs and similar greedy trees two pointers | Statement | E2 | Codeforces Round 661 (Div. 3) {1399} | PROGRAMMING | Codeforces Round #661 (Div. 3) Editorial | ||
| 1165 | Mercenaries | bitmasks combinatorics data structures math two pointers | Statement | G | Educational Codeforces Round 94 (Rated for Div. 2) {1400} | PROGRAMMING | 81942 | ||
| 11428 | Zigzags | brute force data structures dp math two pointers | Statement | D | Educational Codeforces Round 94 (Rated for Div. 2) {1400} | PROGRAMMING | 81942 | ||
| 313 | The Potion of Great Power | *special binary search data structures graphs interactive sortings two pointers | Statement | A | Central-European Olympiad in Informatics, CEOI 2020, Day 2 (IOI, Unofficial Mirror Contest, Unrated) {1403} | PROGRAMMING | CEOI 2020 Online Mirror — Day 2 Tutorial | ||
| 14952 | Chocolate Bunny | constructive algorithms interactive math two pointers | Statement | C | Codeforces Round 669 (Div. 2) {1407} | PROGRAMMING | 1500.0 | Codeforces Round #669 Editorial | |
| 9291 | Discrete Acceleration | binary search implementation math two pointers | Statement | C | Grakn Forces 2020 {1408} | PROGRAMMING | 1250.0 | Grakn Forces -- Editorial | |
| 8483 | Two Platforms | binary search dp sortings two pointers | Statement | E | Codeforces Round 667 (Div. 3) {1409} | PROGRAMMING | Codeforces Round #667 (Div. 3) Editorial | ||
| 6274 | Perform Easily | data structures dp implementation sortings two pointers | Statement | C | Technocup 2021 - Elimination Round 1 {1413} | PROGRAMMING | 1500.0 | Codeforces Round 679 (Div. 1, Div. 2) and Technocup Round 1 editorial | |
| 16956 | k-Amazing Numbers | binary search data structures implementation two pointers | Statement | A | Codeforces Round 673 (Div. 1) {1416} | PROGRAMMING | 500.0 | Codeforces Round #673 Editorial | 1500 |
| 4751 | Trash Problem | data structures hashing implementation two pointers | Statement | D | Educational Codeforces Round 95 (Rated for Div. 2) {1418} | PROGRAMMING | Unofficial Editorial for Educational Round 95 (Div. 2) | ||
| 2770 | Three Occurrences | data structures hashing two pointers | Statement | G | Educational Codeforces Round 95 (Rated for Div. 2) {1418} | PROGRAMMING | Unofficial Editorial for Educational Round 95 (Div. 2) | ||
| 435 | Equal Product | data structures math number theory two pointers | Statement | F | Educational Codeforces Round 95 (Rated for Div. 2) {1418} | PROGRAMMING | Unofficial Editorial for Educational Round 95 (Div. 2) | ||
| 17495 | Sage's Birthday (hard version) | binary search constructive algorithms greedy implementation sortings two pointers | Statement | D2 | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 1000.0 | Codeforces Round #671 Editorial | |
| 17016 | 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 | |
| 9366 | String Deletion | greedy two pointers | Statement | D | Educational Codeforces Round 96 (Rated for Div. 2) {1430} | PROGRAMMING | Educational Codeforces Round 96 — Editorial | ||
| 1055 | Polycarp and the Language of Gods | *special implementation two pointers | Statement | B | Kotlin Heroes 5: ICPC Round {1431} | PROGRAMMING | 84563 | ||
| 2714 | Complicated Computations | binary search data structures sortings two pointers | Statement | E | Codeforces Round 678 (Div. 2) {1436} | PROGRAMMING | 2500.0 | Codeforces Round #678 (Div. 2). Editorial | |
| 5818 | Rating Compression | data structures implementation two pointers | Statement | D | Codeforces Global Round 12 {1450} | PROGRAMMING | 1750.0 | Codeforces Global Round 12 Editorial | |
| 4692 | Array Partition | binary search brute force data structures greedy two pointers | Statement | F | Codeforces Round 686 (Div. 3) {1454} | PROGRAMMING | Codeforces Round #686 (Div. 3) Editorial | ||
| 11432 | 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 | ||
| 15271 | Close Tuples (easy version) | binary search combinatorics math sortings two pointers | Statement | E1 | Codeforces Round 690 (Div. 3) {1462} | PROGRAMMING | Codeforces Round #690 (Div. 3) Editorial | ||
| 49285 | Favorite Sequence | implementation two pointers | Statement | A | Codeforces Round 690 (Div. 3) {1462} | PROGRAMMING | Codeforces Round #690 (Div. 3) Editorial | ||
| 2201 | A Bit Similar | bitmasks brute force hashing string suffix structures strings two pointers | Statement | E | Educational Codeforces Round 101 (Rated for Div. 2) {1469} | PROGRAMMING | Educational Codeforces Round 101 Editorial | ||
| 11711 | Building a Fence | dp greedy implementation two pointers | Statement | C | Educational Codeforces Round 101 (Rated for Div. 2) {1469} | PROGRAMMING | Educational Codeforces Round 101 Editorial | ||
| 375 | Strange Permutation | binary search combinatorics data structures dp two pointers | Statement | E | Codeforces Round 694 (Div. 1) {1470} | PROGRAMMING | 2000.0 | 86464 | |
| 29749 | Strange Birthday Party | dp greedy sortings two pointers | Statement | A | Codeforces Round 694 (Div. 1) {1470} | PROGRAMMING | 500.0 | 86464 | |
| 8985 | Correct Placement | binary search data structures sortings two pointers | Statement | E | Codeforces Round 693 (Div. 3) {1472} | PROGRAMMING | Codeforces Round #693 (Div. 3) Editorial | ||
| 11225 | Cleaning the Phone | binary search dp greedy sortings two pointers | Statement | D | Codeforces Round 697 (Div. 3) {1475} | PROGRAMMING | Codeforces Round #697 (Div. 3) Editorial | ||
| 743 | Minimum Difference | data structures two pointers | Statement | G | Educational Codeforces Round 103 (Rated for Div. 2) {1476} | PROGRAMMING | 87356 | ||
| 9256 | Journey | dfs and similar dp dsu implementation two pointers | Statement | D | Educational Codeforces Round 103 (Rated for Div. 2) {1476} | PROGRAMMING | 87356 | ||
| 1353 | Playlist | data structures dsu implementation two pointers | Statement | B | Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round) {1483} | PROGRAMMING | 1000.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 9868 | Max Median | binary search data structures dp two pointers | Statement | D | Codeforces Round 703 (Div. 2) {1486} | PROGRAMMING | 1750.0 | Codeforces Round #703 (Div. 2) Editorial | |
| 5147 | Cheap Dinner | data structures dp implementation sortings two pointers | Statement | E | Educational Codeforces Round 104 (Rated for Div. 2) {1487} | PROGRAMMING | 87873 | ||
| 17562 | Maximum width | data structures dp greedy two pointers | Statement | C | Codeforces Round 704 (Div. 2) {1492} | PROGRAMMING | 1500.0 | Codeforces Round #704 Editorial | |
| 1091 | Enormous XOR | bitmasks greedy strings two pointers | Statement | E | Codeforces Round 705 (Div. 2) {1493} | PROGRAMMING | 2750.0 | Codeforces Round #705 (Div.2) Editorial | |
| 5778 | GCD of an Array | data structures math number theory sortings two pointers | Statement | D | Codeforces Round 705 (Div. 2) {1493} | PROGRAMMING | 2250.0 | Codeforces Round #705 (Div.2) Editorial | |
| 5744 | 1D Sokoban | binary search implementation two pointers | Statement | C | Educational Codeforces Round 105 (Rated for Div. 2) {1494} | PROGRAMMING | Educational Codeforces Round 105 Editorial | ||
| 917 | Matrix Sorting | bitmasks constructive algorithms dfs and similar greedy hashing string suffix structures two pointers | Statement | C | Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics) {1500} | PROGRAMMING | 1500.0 | Codeforces Round #707 Editorial | 2600 |
| 598 | Tiles for Bathroom | two pointers | Statement | D | Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics) {1500} | PROGRAMMING | 2000.0 | Codeforces Round #707 Editorial | 2900 |
| 4843 | Maximize the Remaining String | brute force data structures dp greedy strings two pointers | Statement | G | Codeforces Round 710 (Div. 3) {1506} | PROGRAMMING | Editorial | ||
| 6693 | 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 | |
| 12847 | Phoenix and Socks | greedy sortings two pointers | Statement | D | Codeforces Global Round 14 {1515} | PROGRAMMING | 2000.0 | Editorial | |
| 1033 | Group Photo | binary search combinatorics implementation two pointers | Statement | E | Contest 2050 and Codeforces Round 718 (Div. 1 + Div. 2) {1517} | PROGRAMMING | 2500.0 | Contest 2050 and Codeforces Round #718 (Div.1 + Div.2) Editorial | |
| 17695 | 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 | ||
| 22772 | Berland Regional | brute force greedy sortings two pointers | Statement | C | Educational Codeforces Round 108 (Rated for Div. 2) {1519} | PROGRAMMING | Educational Codeforces Round 108 Editorial | ||
| 17778 | Unstable String | dp greedy implementation strings two pointers | Statement | C | Educational Codeforces Round 110 (Rated for Div. 2) {1535} | PROGRAMMING | 91481 | ||
| 34719 | Number of Pairs | binary search data structures math two pointers | Statement | C | Codeforces Round 725 (Div. 3) {1538} | PROGRAMMING | Codeforces Round #725 (Div. 3) Editorial | ||
| 12777 | PriceFixed | binary search data structures greedy sortings two pointers | Statement | D | Codeforces Round 727 (Div. 2) {1539} | PROGRAMMING | 1500.0 | tutorial | 1600 |
| 7018 | Array Stabilization (GCD version) | binary search constructive algorithms data structures number theory two pointers | Statement | F | Codeforces Round 731 (Div. 3) {1547} | PROGRAMMING | Codeforces Round #731 (Div. 3) Editorial | ||
| 16456 | Air Conditioners | dfs and similar dp implementation shortest paths sortings two pointers | Statement | E | Codeforces Round 731 (Div. 3) {1547} | PROGRAMMING | Codeforces Round #731 (Div. 3) Editorial | ||
| 24474 | Pair Programming | dp greedy two pointers | Statement | C | Codeforces Round 731 (Div. 3) {1547} | PROGRAMMING | Codeforces Round #731 (Div. 3) Editorial | ||
| 11411 | Integers Have Friends | binary search data structures math number theory two pointers | Statement | B | Codeforces Round 736 (Div. 1) {1548} | PROGRAMMING | 1000.0 | Codeforces Round 736 Editorial | |
| 1850 | Stringforces | binary search bitmasks data structures dp greedy strings two pointers | Statement | E | Educational Codeforces Round 111 (Rated for Div. 2) {1550} | PROGRAMMING | Educational Codeforces Round 111 Editorial | ||
| 15143 | Backspace | greedy strings two pointers | Statement | D | Harbour.Space Scholarship Contest 2021-2022 (open for everyone, rated, Div. 1 + Div. 2) {1553} | PROGRAMMING | 1250.0 | Harbour.Space Scholarship Contest 2021-2022 (Div. 1 + Div. 2) Editorial | |
| 4558 | Boring Segments | binary search data structures sortings two pointers | Statement | E | Educational Codeforces Round 112 (Rated for Div. 2) {1555} | PROGRAMMING | 93389 | 2100 | |
| 766 | Assiut Chess | brute force interactive probabilities two pointers | Statement | E | Codeforces Round 737 (Div. 2) {1557} | PROGRAMMING | 3000.0 | Codeforces Round #737 Editorial | |
| 3081 | Mocha and Diana (Hard Version) | brute force constructive algorithms dfs and similar dsu graphs greedy trees two pointers | Statement | D2 | Codeforces Round 738 (Div. 2) {1559} | PROGRAMMING | 1500.0 | Tutorial (en) | 2500 |
| 8347 | Seating Arrangements (hard version) | data structures greedy implementation sortings two pointers | Statement | D2 | Codeforces Global Round 16 {1566} | PROGRAMMING | 1000.0 | Codeforces Global Round 16 Editorial | |
| 4609 | Inconvenient Pairs | data structures implementation sortings two pointers | Statement | D | Educational Codeforces Round 113 (Rated for Div. 2) {1569} | PROGRAMMING | 94721 | ||
| 2139 | Korney Korneevich and XOR (hard version) | binary search brute force dp two pointers | Statement | F2 | Codeforces Round 750 (Div. 2) {1582} | PROGRAMMING | 1500.0 | Codeforces Round #750 (Div.2) Editorial | |
| 24135 | Grandma Capa Knits a Scarf | data structures greedy strings two pointers | Statement | C | Codeforces Round 750 (Div. 2) {1582} | PROGRAMMING | 1500.0 | Codeforces Round #750 (Div.2) Editorial | |
| 355 | Jumping Through the Array | data structures graphs two pointers | Statement | F | Codeforces Round 755 (Div. 1, based on Technocup 2022 Elimination Round 2) {1588} | PROGRAMMING | 3750.0 | Editorial for Technocup 2022 — Elimination Round 2 and Codeforces Round #755 (Div. 1, Div. 2) | 3500 |
| 1924 | Bored Bakry | bitmasks greedy math two pointers | Statement | E | Codeforces Round 746 (Div. 2) {1592} | PROGRAMMING | 2500.0 | 95583 | |
| 882 | Weights | constructive algorithms greedy two pointers | Statement | A | Bubble Cup 14 - Finals Online Mirror (Unrated, ICPC Rules, Teams Preferred, Div. 1) {1599} | PROGRAMMING | Tutorial | ||
| 2397 | Array Game | games greedy two pointers | Statement | E | Bubble Cup 14 - Finals Online Mirror (Unrated, ICPC Rules, Teams Preferred, Div. 2) {1600} | PROGRAMMING | BubbleCup2021.pdf | ||
| 1580 | 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 | ||
| 7398 | Game Master | data structures dfs and similar dp graphs greedy two pointers | Statement | C | Codeforces Round 758 (Div.1 + Div. 2) {1608} | PROGRAMMING | 1000.0 | Editorial of Codeforces Round #758 (Div.1 + Div. 2) | |
| 10489 | Complex Market Analysis | binary search dp implementation number theory schedules two pointers | Statement | C | Deltix Round, Autumn 2021 (open for everyone, rated, Div. 1 + Div. 2) {1609} | PROGRAMMING | 1500.0 | Deltix Round, Autumn 2021. Editorial | 1400 |
| 23830 | Kalindrome Array | greedy two pointers | Statement | B | Codeforces Global Round 17 {1610} | PROGRAMMING | 1000.0 | Codeforces Global Round 17 Editorial | |
| 7420 | ATM and Students | binary search data structures two pointers | Statement | F | Codeforces Round 756 (Div. 3) {1611} | PROGRAMMING | Tutorial | 1700 | |
| 8402 | Escape The Maze (easy version) | dfs and similar greedy shortest paths trees two pointers | Statement | E1 | Codeforces Round 756 (Div. 3) {1611} | PROGRAMMING | Tutorial | 1700 | |
| 4321 | Escape The Maze (hard version) | dfs and similar dp greedy shortest paths trees two pointers | Statement | E2 | Codeforces Round 756 (Div. 3) {1611} | PROGRAMMING | Tutorial | 2000 | |
| 4662 | Shuffle | combinatorics math two pointers | Statement | D | Educational Codeforces Round 120 (Rated for Div. 2) {1622} | PROGRAMMING | Educational Codeforces Round 120 Editorial | ||
| 11868 | Monsters And Spells | data structures dp fft greedy implementation two pointers | Statement | C | Educational Codeforces Round 121 (Rated for Div. 2) {1626} | PROGRAMMING | 99136 | ||
| 2804 | Not Escaping | data structures dp implementation shortest paths sortings two pointers | Statement | E | Codeforces Round 766 (Div. 2) {1627} | PROGRAMMING | 2000.0 | Codeforces Round #766 (Div. 2) Editorial | |
| 6502 | Range and Partition | binary search data structures greedy two pointers | Statement | B | Codeforces Round 768 (Div. 1) {1630} | PROGRAMMING | 1250.0 | Editorial of Codeforces Round #768 | |
| 5359 | New Year Concert | binary search data structures dp greedy math number theory two pointers | Statement | D | Codeforces Round 769 (Div. 2) {1632} | PROGRAMMING | 2000.0 | Editorial of Codeforces Round #769 | |
| 261 | Two Posters | data structures two pointers | Statement | F | Codeforces Round 771 (Div. 2) {1638} | PROGRAMMING | 3250.0 | Codeforces Round #771 Editorial | |
| 1520 | Two Arrays | bitmasks brute force combinatorics hashing probabilities two pointers | Statement | D | Codeforces Round 773 (Div. 1) {1641} | PROGRAMMING | 1750.0 | Codeforces Round #773 editorial | |
| 22718 | Quality vs Quantity | brute force constructive algorithms greedy sortings two pointers | Statement | B | Codeforces Round 774 (Div. 2) {1646} | PROGRAMMING | 1000.0 | Codeforces Round #774 (Div. 2) Editorial | 800 |
| 27283 | Subtract Operation | constructive algorithms data structures math two pointers | Statement | B | CodeTON Round 1 (Div. 1 + Div. 2, Rated, Prizes!) {1656} | PROGRAMMING | 1000.0 | Tutorial | |
| 5327 | For Gamers. By Gamers. | binary search dp math sortings two pointers | Statement | D | Educational Codeforces Round 125 (Rated for Div. 2) {1657} | PROGRAMMING | 101161 | ||
| 4458 | 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 | |
| 40324 | Eating Candies | binary search data structures greedy two pointers | Statement | F | Codeforces Round 784 (Div. 4) {1669} | PROGRAMMING | 102101 | 1100 | |
| 6968 | Cyclic Rotation | constructive algorithms greedy implementation two pointers | Statement | D | Codeforces Global Round 20 {1672} | PROGRAMMING | 1000.0 | Global Round 20 Editorial | 1700 |
| 20289 | Longest Strike | data structures greedy implementation sortings two pointers | Statement | F | Codeforces Round 790 (Div. 4) {1676} | PROGRAMMING | Codeforces Round #790 (Div. 4) Editorial | ||
| 1424 | Typical Party in Dorm | bitmasks brute force combinatorics dp strings two pointers | Statement | E | Codeforces Round 791 (Div. 2) {1679} | PROGRAMMING | 2250.0 | Codeforces Round #791 (Div. 2) Editorial | |
| 11170 | Binary String | binary search greedy two pointers | Statement | C | Educational Codeforces Round 128 (Rated for Div. 2) {1680} | PROGRAMMING | 102852 | ||
| 395 | MCMF? | data structures flows graphs greedy sortings two pointers | Statement | F | Codeforces Round 793 (Div. 2) {1682} | PROGRAMMING | 2750.0 | Codeforces Round #793 (Div. 2) Editorial | |
| 3644 | MEX vs DIFF | brute force constructive algorithms data structures greedy two pointers | Statement | E | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 1750.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 2100 |
| 1130 | Diverse Segments | data structures two pointers | Statement | F | Codeforces Round 792 (Div. 1 + Div. 2) {1684} | PROGRAMMING | 2000.0 | Codeforces Round #792 (Div. 1 + Div. 2) Editorial | 2600 |
| 17746 | Lex String | brute force greedy implementation sortings two pointers | Statement | A | Codeforces Round 798 (Div. 2) {1689} | PROGRAMMING | 500.0 | Editorial for Codeforces Round #798 (Div. 2) | |
| 48050 | Black and White Stripe | implementation two pointers | Statement | D | Codeforces Round 797 (Div. 3) {1690} | PROGRAMMING | Codeforces Round #797 (Div. 3) Editorial | 1000 | |
| 17071 | Price Maximization | binary search greedy math two pointers | Statement | E | Codeforces Round 797 (Div. 3) {1690} | PROGRAMMING | Codeforces Round #797 (Div. 3) Editorial | 1500 | |
| 7551 | 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) | |
| 36012 | 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) | |
| 34000 | Binary Deque | binary search implementation two pointers | Statement | E | Codeforces Round 799 (Div. 4) {1692} | PROGRAMMING | Codeforces Round #799 (Div. 4) Editorial | ||
| 26835 | 2^Sort | data structures dp sortings two pointers | Statement | G | Codeforces Round 799 (Div. 4) {1692} | PROGRAMMING | Codeforces Round #799 (Div. 4) Editorial | ||
| 204 | Maximum Product? | brute force combinatorics dp greedy math two pointers | Statement | H | Codeforces Global Round 21 {1696} | PROGRAMMING | 4000.0 | Editorial of Codeforces Global Round 21 | |
| 15840 | 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 | ||
| 10772 | The Third Problem | combinatorics math two pointers | Statement | C | Codeforces Round 804 (Div. 2) {1699} | PROGRAMMING | 1500.0 | Codeforces Round #804 (Div. 2) Editorial | |
| 1386 | Three Days Grace | dp math two pointers | Statement | E | Codeforces Round 804 (Div. 2) {1699} | PROGRAMMING | 2500.0 | Codeforces Round #804 (Div. 2) Editorial | |
| 1353 | Text Editor | brute force dp greedy strings two pointers | Statement | E | Educational Codeforces Round 131 (Rated for Div. 2) {1701} | PROGRAMMING | Educational Codeforces Round 131 Editorial | ||
| 1943 | Chopping Carrots (Hard Version) | constructive algorithms dp number theory two pointers | Statement | D2 | Codeforces Round 809 (Div. 2) {1706} | PROGRAMMING | 1250.0 | Codeforces Round #809 Editorial | |
| 2467 | LCM Sum (easy version) | binary search brute force combinatorics math number theory two pointers | Statement | E1 | Codeforces Round 813 (Div. 2) {1712} | PROGRAMMING | 2000.0 | Codeforces Round #813 (Div. 2) Editorial | |
| 1619 | LCM Sum (hard version) | combinatorics data structures math number theory two pointers | Statement | E2 | Codeforces Round 813 (Div. 2) {1712} | PROGRAMMING | 750.0 | Codeforces Round #813 (Div. 2) Editorial | |
| 21309 | Sort Zero | greedy sortings two pointers | Statement | C | Codeforces Round 813 (Div. 2) {1712} | PROGRAMMING | 1500.0 | Codeforces Round #813 (Div. 2) Editorial | |
| 5935 | Burenka and Traditions (hard version) | data structures dp greedy math two pointers | Statement | A2 | Codeforces Round 814 (Div. 1) {1718} | PROGRAMMING | 500.0 | Codeforces Round #814 (Div. 1, Div. 2) Editorial | |
| 14411 | Fighting Tournament | binary search data structures implementation two pointers | Statement | C | Codeforces Round 814 (Div. 2) {1719} | PROGRAMMING | 1250.0 | Codeforces Round #814 (Div. 1, Div. 2) Editorial | |
| 14602 | Min-Max Array Transformation | binary search greedy two pointers | Statement | C | Educational Codeforces Round 134 (Rated for Div. 2) {1721} | PROGRAMMING | 106416 | ||
| 1955 | Circular Mirror | binary search combinatorics math two pointers | Statement | C | COMPFEST 14 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1725} | PROGRAMMING | Tutorial | ||
| 2527 | Cut Substrings | combinatorics dp hashing strings two pointers | Statement | G | Codeforces Round 820 (Div. 3) {1729} | PROGRAMMING | Codeforces Round #820 (Div. 3) Editorial | ||
| 31326 | Friends and the Restaurant | greedy two pointers | Statement | D | Codeforces Round 820 (Div. 3) {1729} | PROGRAMMING | Codeforces Round #820 (Div. 3) Editorial | ||
| 8555 | Valiant's New Map | binary search brute force data structures dp two pointers | Statement | D | Codeforces Round 841 (Div. 2) and Divide by Zero 2022 {1731} | PROGRAMMING | 1500.0 | Codeforces Round #841 (Div. 2) and Divide By Zero 2022 Editorial | |
| 7751 | Sheikh (Easy version) | binary search bitmasks greedy two pointers | Statement | C1 | Codeforces Round 830 (Div. 2) {1732} | PROGRAMMING | 1000.0 | 108327 | 1800 |
| 3099 | Sheikh (Hard Version) | binary search bitmasks brute force greedy implementation two pointers | Statement | C2 | Codeforces Round 830 (Div. 2) {1732} | PROGRAMMING | 1000.0 | 108327 | 2100 |
| 7070 | Slime Escape | data structures dp greedy two pointers | Statement | D | Codeforces Round 822 (Div. 2) {1734} | PROGRAMMING | 2000.0 | Codeforces Round #822 (Div.2) Editorial | |
| 16562 | Good Subarrays (Easy Version) | binary search data structures two pointers | Statement | C1 | Codeforces Round 825 (Div. 2) {1736} | PROGRAMMING | 1250.0 | Codeforces Round #825 (Div. 2) Editorial | |
| 1473 | Good Subarrays (Hard Version) | binary search data structures two pointers | Statement | C2 | Codeforces Round 825 (Div. 2) {1736} | PROGRAMMING | 2000.0 | Codeforces Round #825 (Div. 2) Editorial | |
| 1807 | Balance Addicts | combinatorics dp math two pointers | Statement | E | Codeforces Global Round 22 {1738} | PROGRAMMING | 2500.0 | Editorial of Codeforces Global Round <strong>22</strong> | |
| 19406 | Minimize the Thickness | brute force greedy math two pointers | Statement | C | Codeforces Round 826 (Div. 3) {1741} | PROGRAMMING | 107908 | ||
| 45106 | Traffic Light | binary search implementation two pointers | Statement | C | Codeforces Round 828 (Div. 3) {1744} | PROGRAMMING | Codeforces Round #828 (Div. 3) Editorial | ||
| 3799 | MEX vs MED | brute force math two pointers | Statement | F | Codeforces Round 828 (Div. 3) {1744} | PROGRAMMING | Codeforces Round #828 (Div. 3) Editorial | ||
| 250 | Minecraft Series | brute force two pointers | Statement | F | Codeforces Round 829 (Div. 1) {1753} | PROGRAMMING | 3000.0 | Tutorial | 3500 |
| 8508 | Range = √Sum | binary search brute force constructive algorithms math two pointers | Statement | D | Codeforces Round 836 (Div. 2) {1758} | PROGRAMMING | 1750.0 | Codeforces Round #836 (Div. 2) Editorial | |
| 4876 | Watch the Videos | binary search constructive algorithms two pointers | Statement | D | 2022-2023 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Preferably Teams) {1765} | PROGRAMMING | 109642 | 1700 | |
| 21708 | Hossam and Friends | binary search constructive algorithms dp two pointers | Statement | B | Codeforces Round 837 (Div. 2) {1771} | PROGRAMMING | 1000.0 | Codeforces Round #837 (Div. 2) Editorial | |
| 802 | Hossam and a Letter | brute force dp implementation two pointers | Statement | E | Codeforces Round 837 (Div. 2) {1771} | PROGRAMMING | 2750.0 | Codeforces Round #837 (Div. 2) Editorial | |
| 9294 | 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 | |
| 7565 | Beppa and SwerChat | two pointers | Statement | H | SWERC 2022-2023 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1776} | PROGRAMMING | |||
| 1384 | Comfortably Numb | binary search bitmasks data structures divide and conquer dsu strings trees two pointers | Statement | F | Codeforces Round 845 (Div. 2) and ByteRace 2023 {1777} | PROGRAMMING | 2750.0 | Codeforces Round #845 (Div. 2) and ByteRace 2023 Editorial | |
| 12498 | Quiz Master | math sortings two pointers | Statement | C | Codeforces Round 845 (Div. 2) and ByteRace 2023 {1777} | PROGRAMMING | 1500.0 | Codeforces Round #845 (Div. 2) and ByteRace 2023 Editorial | |
| 1436 | Rectangle Shrinking | binary search data structures greedy implementation two pointers | Statement | E | VK Cup 2022 - Отборочный раунд (Engine) {1781} | PROGRAMMING | 2750.0 | Tutorial | |
| 14801 | Going to the Cinema | binary search math sortings two pointers | Statement | B | VK Cup 2022 - Отборочный раунд (Engine) {1781} | PROGRAMMING | 1000.0 | Tutorial | |
| 362 | Treasure Hunt | divide and conquer two pointers | Statement | I | TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) {1787} | PROGRAMMING | 3750.0 | TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!) Editorial | |
| 4703 | Moving Dots | binary search brute force combinatorics dp math two pointers | Statement | D | Codeforces Round 851 (Div. 2) {1788} | PROGRAMMING | 2250.0 | Codeforces Round #851 (Div. 2) Editorial | |
| 75759 | Prepend and Append | implementation two pointers | Statement | C | Codeforces Round 849 (Div. 4) {1791} | PROGRAMMING | 112282 | ||
| 33825 | Dora and Search | constructive algorithms data structures two pointers | Statement | C | Codeforces Round 852 (Div. 2) {1793} | PROGRAMMING | 1250.0 | Codeforces Round #852 Editorial | |
| 7180 | Moscow Gorillas | dp greedy implementation two pointers | Statement | D | Codeforces Round 852 (Div. 2) {1793} | PROGRAMMING | 1750.0 | Codeforces Round #852 Editorial | |
| 22498 | Scoring Subsequences | binary search greedy math two pointers | Statement | C | Codeforces Round 856 (Div. 2) {1794} | PROGRAMMING | 1250.0 | Codeforces Round 856 (Div. 2) Editorial | |
| 15674 | Vaccination | greedy implementation two pointers | Statement | B | Nebius Welcome Round (Div. 1 + Div. 2) {1804} | PROGRAMMING | 1000.0 | Nebius Welcome Round Editorial | |
| 519 | Survival of the Weakest (hard version) | greedy sortings two pointers | Statement | F2 | Codeforces Round 862 (Div. 2) {1805} | PROGRAMMING | 1750.0 | Editorial of Codeforces Round #862 (Div. 2) | |
| 2734 | Petya, Petya, Petr, and Palindromes | binary search data structures two pointers | Statement | D | Codeforces Round 861 (Div. 2) {1808} | PROGRAMMING | 1750.0 | Codeforces Round #861 (Div. 2) editorial | 2100 |
| 2145 | Vlad and the Nice Paths (hard version) | binary search combinatorics data structures dp math two pointers | Statement | G2 | Codeforces Round 863 (Div. 3) {1811} | PROGRAMMING | 114788 | ||
| 1031 | Balancing Weapons | binary search brute force two pointers | Statement | D | Educational Codeforces Round 146 (Rated for Div. 2) {1814} | PROGRAMMING | Educational Codeforces Round 146 Editorial | ||
| 4254 | The Butcher | greedy implementation sortings two pointers | Statement | B | Codeforces Round 866 (Div. 1) {1819} | PROGRAMMING | 1250.0 | Codeforces Round #866 (Div.1, Div.2, based on Lipetsk Team Olympiad) Editorial | |
| 23478 | JoJo's Incredible Adventures | math strings two pointers | Statement | B | Codeforces Round 866 (Div. 2) {1820} | PROGRAMMING | 1000.0 | Codeforces Round #866 (Div.1, Div.2, based on Lipetsk Team Olympiad) Editorial | |
| 29358 | Counting Orders | combinatorics math sortings two pointers | Statement | A | Codeforces Round 873 (Div. 1) {1827} | PROGRAMMING | 500.0 | Codeforces Round #873 (Div. 1 & 2) Editorial | 1100 |
| 4556 | Range Sorting (Easy Version) | binary search dp dsu greedy trees two pointers | Statement | B1 | Codeforces Round 873 (Div. 1) {1827} | PROGRAMMING | 750.0 | Codeforces Round #873 (Div. 1 & 2) Editorial | 2000 |
| 2214 | Hyperregular Bracket Strings | combinatorics hashing number theory sortings two pointers | Statement | C | Codeforces Round 875 (Div. 1) {1830} | PROGRAMMING | 1750.0 | Codeforces Round #875 (Div.1 + Div. 2) Editorial | |
| 36441 | Maximum Sum | brute force sortings two pointers | Statement | B | Educational Codeforces Round 148 (Rated for Div. 2) {1832} | PROGRAMMING | 116454 | 1100 | |
| 2788 | MEX of LCM | binary search brute force data structures implementation math number theory two pointers | Statement | E | Codeforces Round 879 (Div. 2) {1834} | PROGRAMMING | 2500.0 | Codeforces Round #879 Editorial | |
| 1091 | Lottery | binary search brute force greedy math sortings two pointers | Statement | B | Codeforces Round 880 (Div. 1) {1835} | PROGRAMMING | 1250.0 | Codeforces Round 880 Editorial | |
| 16586 | Lamps | data structures greedy sortings two pointers | Statement | B | Codeforces Round 876 (Div. 2) {1839} | PROGRAMMING | 1000.0 | Codeforces Round #876 (Div. 2) Editorial | |
| 48658 | Ski Resort | combinatorics math two pointers | Statement | C | Codeforces Round 878 (Div. 3) {1840} | PROGRAMMING | Codeforces Round #878 (Div.3) Editorial | ||
| 38329 | Cipher Shifer | implementation strings two pointers | Statement | A | Codeforces Round 878 (Div. 3) {1840} | PROGRAMMING | Codeforces Round #878 (Div.3) Editorial | ||
| 2204 | Max to the Right of Min | binary search data structures divide and conquer dsu two pointers | Statement | E | Educational Codeforces Round 152 (Rated for Div. 2) {1849} | PROGRAMMING | 118752 | ||
| 4088 | Vlad and the Mountains | data structures dsu graphs implementation sortings trees two pointers | Statement | G | Codeforces Round 888 (Div. 3) {1851} | PROGRAMMING | 118667 | ||
| 32567 | Parity Sort | sortings two pointers | Statement | B | Codeforces Round 888 (Div. 3) {1851} | PROGRAMMING | 118667 | ||
| 9278 | Ntarsis' Set | binary search implementation math two pointers | Statement | A | Codeforces Round 887 (Div. 1) {1852} | PROGRAMMING | 500.0 | Codeforces Round 887 (Div 1, Div 2) Tutorial | |
| 5483 | Imbalanced Arrays | constructive algorithms greedy sortings two pointers | Statement | B | Codeforces Round 887 (Div. 1) {1852} | PROGRAMMING | 750.0 | Codeforces Round 887 (Div 1, Div 2) Tutorial | |
| 3209 | Trees and Segments | binary search brute force constructive algorithms data structures dp greedy two pointers | Statement | D | Codeforces Round 893 (Div. 2) {1858} | PROGRAMMING | 2000.0 | Codeforces Round #893 (Div. 2) Editorial | 2200 |
| 8028 | Andrey and Escape from Capygrad | binary search data structures dp dsu greedy sortings two pointers | Statement | D | Codeforces Round 892 (Div. 2) {1859} | PROGRAMMING | 1750.0 | Video solutions from Geothermal. | |
| 938 | Imagination Castle | dp games two pointers | Statement | I | COMPFEST 15 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1866} | PROGRAMMING | COMPFEST 15 Preliminary — Editorial | ||
| 13161 | Colorful Table | binary search data structures dp implementation math sortings two pointers | Statement | C | CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!) {1870} | PROGRAMMING | 1500.0 | CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!) Editorial | |
| 5059 | Replace With Product | brute force math two pointers | Statement | G | Codeforces Round 895 (Div. 3) {1872} | PROGRAMMING | Codeforces Round 895 (Div. 3) Editorial | ||
| 19857 | Money Trees | greedy greedy greedy math two pointers | Statement | F | Codeforces Round 898 (Div. 4) {1873} | PROGRAMMING | 120634 | ||
| 1050 | Lexichromatography | combinatorics dfs and similar dsu graphs two pointers | Statement | D | Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round) {1876} | PROGRAMMING | 1750.0 | Codeforces Round #902 (Div. 1, Div. 2, based on COMPFEST 15 — Final Round) Editorial | |
| 14773 | Haunted House | greedy math two pointers | Statement | B | Codeforces Round 904 (Div. 2) {1884} | PROGRAMMING | 1000.0 | Codeforces Round #904 (Div. 2) Editorial | |
| 1862 | I Wanna be the Team Leader | bitmasks dp two pointers | Statement | E | Educational Codeforces Round 156 (Rated for Div. 2) {1886} | PROGRAMMING | Educational Codeforces Round 156 Editorial | ||
| 1263 | Split | binary search data structures divide and conquer math two pointers | Statement | D | Codeforces Round 905 (Div. 1) {1887} | PROGRAMMING | 1250.0 | Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial | |
| 2304 | Minimum Array | constructive algorithms data structures two pointers | Statement | C | Codeforces Round 905 (Div. 1) {1887} | PROGRAMMING | 1000.0 | Codeforces Round #905 (Div. 1, Div. 2, Div. 3) Editorial | |
| 20731 | Smilo and Monsters | constructive algorithms greedy sortings two pointers | Statement | C | Codeforces Round 907 (Div. 2) {1891} | PROGRAMMING | 1000.0 | ||
| 11601 | Neutral Tonality | constructive algorithms greedy sortings two pointers | Statement | B | Codeforces Round 908 (Div. 1) {1893} | PROGRAMMING | 1000.0 | Codeforces Round 908 (Div. 1, Div, 2) Editorial | |
| 7039 | Ones and Twos | data structures math two pointers | Statement | D | CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) {1896} | PROGRAMMING | 2000.0 | CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!) Editorial | |
| 35608 | Yarik and Array | greedy two pointers | Statement | C | Codeforces Round 909 (Div. 3) {1899} | PROGRAMMING | Разбор Codeforces Round 909 (Div. 3) | ||
| 5759 | 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 | |
| 28610 | Collecting Game | binary search dp greedy two pointers | Statement | B | Codeforces Round 914 (Div. 2) {1904} | PROGRAMMING | 750.0 | Codeforces Round 914 (Div. 2) Editorial | |
| 4648 | 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 | |
| 66 | Innovative Washing Machine | geometry math two pointers | Statement | I | 2023-2024 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1912} | PROGRAMMING | 3300 | ||
| 6272 | Blocking Elements | binary search data structures dp greedy implementation two pointers | Statement | D | Codeforces Round 922 (Div. 2) {1918} | PROGRAMMING | 2000.0 | Codeforces Round #922 (Div. 2) Editorial | |
| 24352 | Very Different Array | greedy sortings two pointers | Statement | D | Codeforces Round 920 (Div. 3) {1921} | PROGRAMMING | Editorial for Codeforces Round 920 (Div. 3) | ||
| 33793 | Find the Different Ones! | binary search brute force data structures dp greedy two pointers | Statement | D | Codeforces Round 923 (Div. 3) {1927} | PROGRAMMING | 125597 | ||
| 20848 | Equalize | binary search greedy sortings two pointers | Statement | B | Codeforces Round 924 (Div. 2) {1928} | PROGRAMMING | 1000.0 | Codeforces Round 924 Editorial | |
| 629 | Bitwise Paradox | bitmasks data structures greedy two pointers | Statement | D | Codeforces Round 930 (Div. 1) {1936} | PROGRAMMING | 2000.0 | Codeforces Round 930 (Div. 1, Div. 2) Editorial | |
| 415 | More Gifts | *special dfs and similar two pointers | Statement | C | XVIII Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules) {1939} | PROGRAMMING | |||
| 7449 | Rudolf and Imbalance | binary search greedy two pointers | Statement | F | Codeforces Round 933 (Div. 3) {1941} | PROGRAMMING | 127018 | ||
| 47840 | Rudolf and the Ticket | brute force math sortings two pointers | Statement | A | Codeforces Round 933 (Div. 3) {1941} | PROGRAMMING | 127018 | ||
| 372 | MEX Game 2 (Hard Version) | binary search greedy two pointers | Statement | E2 | Codeforces Round 934 (Div. 1) {1943} | PROGRAMMING | 1500.0 | Codeforces Round #934 (Div1, Div2) Editorial | |
| 12455 | Tandem Repeats? | brute force dp strings two pointers | Statement | D | Educational Codeforces Round 163 (Rated for Div. 2) {1948} | PROGRAMMING | Educational Codeforces Round 163 Editorial | ||
| 541 | Amanda the Amoeba | graphs implementation trees two pointers | Statement | J | European Championship 2024 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) {1949} | PROGRAMMING | European Championship 2024 (EUC) Editorial | ||
| 18674 | Inaccurate Subsequence Search | data structures two pointers | Statement | D | Codeforces Round 938 (Div. 3) {1955} | PROGRAMMING | 128243 | ||
| 982 | Long Way to be Non-decreasing | binary search dfs and similar graphs implementation shortest paths two pointers | Statement | D | Codeforces Round 942 (Div. 1) {1967} | PROGRAMMING | 1750.0 | Tutorial | 2800 |
| 31637 | Prefiquence | greedy two pointers | Statement | B | Codeforces Round 943 (Div. 3) {1968} | PROGRAMMING | 129096 | 800 | |
| 25970 | Contest Proposal | brute force greedy two pointers | Statement | A | Codeforces Round 942 (Div. 2) {1972} | PROGRAMMING | 500.0 | Tutorial | 800 |
| 16905 | Cat, Fox and the Lonely Array | binary search bitmasks data structures greedy math two pointers | Statement | B | Codeforces Round 945 (Div. 2) {1973} | PROGRAMMING | 1000.0 | Editorial for Codeforces Round #945 (Div. 2) | 1300 |
| 4419 | Cutting Game | binary search brute force data structures implementation sortings two pointers | Statement | F | Codeforces Round 946 (Div. 3) {1974} | PROGRAMMING | Codeforces Round #946 (Div. 3) Editorial | 1900 | |
| 5835 | Invertible Bracket Sequences | binary search combinatorics data structures divide and conquer implementation two pointers | Statement | D | Educational Codeforces Round 166 (Rated for Div. 2) {1976} | PROGRAMMING | Educational Codeforces Round 166 Editorial | ||
| 12498 | Job Interview | binary search dp greedy implementation two pointers | Statement | C | Educational Codeforces Round 166 (Rated for Div. 2) {1976} | PROGRAMMING | Educational Codeforces Round 166 Editorial | ||
| 1829 | Manhattan Triangle | binary search constructive algorithms data structures geometry graphs two pointers | Statement | E | Codeforces Round 951 (Div. 2) {1979} | PROGRAMMING | 2500.0 | Codeforces Round 951 (Div. 2) Editorial | |
| 22024 | Boring Day | binary search data structures dp greedy two pointers | Statement | C | Codeforces Round 955 (Div. 2, with prizes from NEAR!) {1982} | PROGRAMMING | 1000.0 | 130839 | |
| 1537 | array-value | binary search bitmasks data structures two pointers | Statement | F | Codeforces Round 956 (Div. 2) and ByteRace 2024 {1983} | PROGRAMMING | 2500.0 | ||
| 18056 | Mathematical Problem | brute force dp two pointers | Statement | D | Codeforces Round 954 (Div. 3) {1986} | PROGRAMMING | 130762 | ||
| 7149 | Smithing Skill | brute force dp greedy math sortings two pointers | Statement | D | Educational Codeforces Round 167 (Rated for Div. 2) {1989} | PROGRAMMING | Educational Codeforces Round 167 Editorial | ||
| 446 | Polygonal Segments | data structures geometry two pointers | Statement | F | Codeforces Round 960 (Div. 2) {1990} | PROGRAMMING | 3000.0 | Video Tutorial | |
| 7486 | Valuable Cards | dp greedy number theory two pointers | Statement | F | Codeforces Round 957 (Div. 3) {1992} | PROGRAMMING | Shayan's Video Tutorial | ||
| 13740 | Hungry Games | binary search data structures dp two pointers | Statement | C | Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2) {1994} | PROGRAMMING | 1250.0 | Video Tutorial | |
| 398 | Let Me Teach You a Lesson (Hard Version) | 2-sat bitmasks data structures dp graphs matrices two pointers | Statement | E2 | Codeforces Round 961 (Div. 2) {1995} | PROGRAMMING | 1500.0 | Video Tutorial | |
| 511 | Let Me Teach You a Lesson (Easy Version) | 2-sat data structures dp two pointers | Statement | E1 | Codeforces Round 961 (Div. 2) {1995} | PROGRAMMING | 2500.0 | Video Tutorial | |
| 21059 | Bouquet (Easy Version) | binary search brute force greedy sortings sortings two pointers | Statement | B1 | Codeforces Round 961 (Div. 2) {1995} | PROGRAMMING | 1000.0 | Video Tutorial | |
| 10197 | Bouquet (Hard Version) | binary search data structures greedy math sortings two pointers | Statement | B2 | Codeforces Round 961 (Div. 2) {1995} | PROGRAMMING | 500.0 | Video Tutorial | |
| 29109 | Right Left Wrong | greedy implementation two pointers | Statement | D | Codeforces Round 966 (Div. 3) {2000} | PROGRAMMING | 132689 | ||
| 41003 | Seating in a Bus | two pointers | Statement | B | Codeforces Round 966 (Div. 3) {2000} | PROGRAMMING | 132689 | ||
| 6452 | Longest Max Min Subsequence | brute force constructive algorithms greedy two pointers | Statement | D | Codeforces Round 967 (Div. 2) {2001} | PROGRAMMING | 2000.0 | Video Tutorial | |
| 645 | Turtle and Inversions (Hard Version) | brute force constructive algorithms data structures dp greedy two pointers | Statement | E2 | Codeforces Round 968 (Div. 2) {2003} | PROGRAMMING | 1000.0 | sol-zh.pdf | |
| 810 | Turtle and Three Sequences | data structures dp graphs greedy meet-in-the-middle probabilities two pointers | Statement | F | Codeforces Round 968 (Div. 2) {2003} | PROGRAMMING | 2500.0 | sol-zh.pdf | |
| 2087 | Eri and Expanded Sets | binary search data structures number theory two pointers | Statement | C | Codeforces Round 969 (Div. 1) {2006} | PROGRAMMING | 1500.0 | Tutorial | |
| 5444 | Yunli's Subarray Queries (easy version) | binary search two pointers | Statement | G1 | Codeforces Round 971 (Div. 4) {2009} | PROGRAMMING | Codeforces Round 971 (Div. 4) Editorial | ||
| 4626 | Message Transmission Error (hard version) | hashing strings two pointers | Statement | C2 | Testing Round 19 (Div. 3) {2010} | PROGRAMMING | 1700 | ||
| 5222 | Speedbreaker | binary search dp greedy implementation math two pointers | Statement | B | Codeforces Round 975 (Div. 1) {2018} | PROGRAMMING | 750.0 | Editorial of Codeforces Round 975 (Div. 1, Div. 2) | |
| 19178 | New Game | binary search brute force greedy implementation two pointers | Statement | C | Educational Codeforces Round 170 (Rated for Div. 2) {2025} | PROGRAMMING | Educational Codeforces Round 170 Editorial | ||
| 28725 | Two Screens | binary search greedy strings two pointers | Statement | A | Educational Codeforces Round 170 (Rated for Div. 2) {2025} | PROGRAMMING | Educational Codeforces Round 170 Editorial | ||
| 1913 | The Endspeaker (Hard Version) | binary search combinatorics data structures dp greedy implementation two pointers | Statement | D2 | Codeforces Round 982 (Div. 2) {2027} | PROGRAMMING | 1000.0 | Codeforces Round #982 (Div. 2) Editorial | |
| 7029 | The Endspeaker (Easy Version) | binary search dp graphs greedy implementation two pointers | Statement | D1 | Codeforces Round 982 (Div. 2) {2027} | PROGRAMMING | 1250.0 | Codeforces Round #982 (Div. 2) Editorial | |
| 10066 | Alice's Adventures in Cutting Cake | binary search dp greedy two pointers | Statement | C | Codeforces Round 986 (Div. 2) {2028} | PROGRAMMING | 1500.0 | Codeforces Round 986 (Div. 2) Editorial | |
| 1188 | Orangutan Approved Subarrays | binary search brute force data structures greedy two pointers | Statement | F | Codeforces Round 979 (Div. 2) {2030} | PROGRAMMING | 2500.0 | Codeforces Round 979 Editorial | |
| 9918 | Penchick and Desert Rabbit | data structures dfs and similar dp dsu greedy two pointers | Statement | D | Codeforces Round 987 (Div. 2) {2031} | PROGRAMMING | 2000.0 | Codeforces Round 987 (Div. 2) Editorial | |
| 21111 | Penchick and Modern Monument | dp greedy math two pointers | Statement | A | Codeforces Round 987 (Div. 2) {2031} | PROGRAMMING | 500.0 | Codeforces Round 987 (Div. 2) Editorial | |
| 6234 | Genokraken | binary search constructive algorithms data structures graphs interactive trees two pointers | Statement | D | Codeforces Round 983 (Div. 2) {2032} | PROGRAMMING | 1750.0 | Codeforces Round 983 (Div. 2) Editorial | |
| 16298 | Trinity | binary search math sortings two pointers | Statement | C | Codeforces Round 983 (Div. 2) {2032} | PROGRAMMING | 1250.0 | Codeforces Round 983 (Div. 2) Editorial | |
| 15878 | Rakhsh's Revival | data structures greedy implementation two pointers | Statement | B | Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2) {2034} | PROGRAMMING | 750.0 | Rayan 2024 Selection Round Editorial | |
| 5853 | Yet Another Real Number Problem | binary search brute force data structures dp greedy implementation math two pointers | Statement | D | Codeforces Global Round 27 {2035} | PROGRAMMING | 1500.0 | Codeforces Global Round 27 Editorial | |
| 2981 | Ardent Flames | binary search data structures sortings two pointers | Statement | F | Codeforces Round 988 (Div. 3) {2037} | PROGRAMMING | Video Tutorial | ||
| 14840 | Sharky Surfing | data structures greedy two pointers | Statement | D | Codeforces Round 988 (Div. 3) {2037} | PROGRAMMING | Video Tutorial | ||
| 7444 | Kachina's Favorite Binary String | greedy interactive two pointers | Statement | E | Codeforces Round 988 (Div. 3) {2037} | PROGRAMMING | Video Tutorial | ||
| 5880 | Non Prime Tree | brute force constructive algorithms dfs and similar greedy number theory trees two pointers | Statement | D | Codeforces Round 992 (Div. 2) {2040} | PROGRAMMING | 2000.0 | Codeforces Round #992 (Div.2) Editorial | |
| 8369 | Kevin and Competition Memories | binary search data structures greedy sortings two pointers | Statement | D | Codeforces Global Round 28 {2048} | PROGRAMMING | 1250.0 | Tutorial | |
| 1325 | Kevin and Math Class | brute force data structures divide and conquer dp math trees two pointers | Statement | F | Codeforces Global Round 28 {2048} | PROGRAMMING | 2000.0 | Tutorial | |
| 24089 | Counting Pairs | binary search sortings two pointers | Statement | D | Codeforces Round 995 (Div. 3) {2051} | PROGRAMMING | 137623 | ||
| 108 | Affectionate Arrays (Hard Version) | data structures dp graphs greedy math shortest paths two pointers | Statement | I2 | Good Bye 2024: 2025 is NEAR {2053} | PROGRAMMING | 2000.0 | Good Bye 2024: 2025 is NEAR Editorial | |
| 32280 | Game of Mathletes | games greedy sortings two pointers | Statement | C | Codeforces Round 998 (Div. 3) {2060} | PROGRAMMING | Codeforces Round 998 (Div. 3) Editorial |