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
Solved |
Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 2169 | Beaver | data structures dp greedy hashing strings two pointers | Statement | C | Codeforces Beta Round 71 {79} | PROGRAMMING | Codeforces Beta Round #71 Editorial | 1800 | |
| 419 | Shoe Store | dp graph matchings greedy sortings two pointers | Statement | D | Codeforces Round 113 (Div. 2) {166} | PROGRAMMING | Codeforces Round #113 (Div. 2) Tutorial | 2400 | |
| 2679 | Towers | dp greedy two pointers | Statement | D | Codeforces Round 142 (Div. 1) {229} | PROGRAMMING | Codeforces Round #142 Problem Analysis | 2000 | |
| 59327 | BerSU Ball | dfs and similar dp graph matchings greedy sortings two pointers | Statement | B | Codeforces Round 277.5 (Div. 2) {489} | PROGRAMMING | Codeforces Round #277.5 (Div. 2) Editorial [A-D for now] | 1300 | |
| 2457 | Correcting Mistakes | constructive algorithms dp greedy hashing strings two pointers | Statement | E | VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) {533} | PROGRAMMING | Разбор VK Cup Round 2 | 1800 | |
| 2507 | Skills | binary search brute force dp greedy sortings two pointers | Statement | B | Codeforces Round 339 (Div. 1) {613} | PROGRAMMING | Tutorial | 2200 | |
| 3594 | Epidemic in Monstropolis | constructive algorithms dp greedy two pointers | Statement | C | Codeforces Round 378 (Div. 2) {733} | PROGRAMMING | Codeforces Round #378 (Div. 2) editorial | 1800 | |
| 5743 | Anton and Making Potions | binary search dp greedy two pointers | Statement | C | Codeforces Round 379 (Div. 2) {734} | PROGRAMMING | Tutorial of Codeforces Round #379 (Div. 2) | 1600 | |
| 6920 | Alyona and Spreadsheet | binary search data structures dp greedy implementation two pointers | Statement | C | Codeforces Round 401 (Div. 2) {777} | PROGRAMMING | Problem analysis of Codeforces Round #401 (Div. 2) | 1600 | |
| 4315 | Pencils and Boxes | binary search data structures dp greedy two pointers | Statement | E | Educational Codeforces Round 44 (Rated for Div. 2) {985} | PROGRAMMING | Educational Codeforces Round 44 Editorial | 2000 | |
| 2949 | Maximum Balanced Circle | constructive algorithms dp greedy two pointers | Statement | F | Codeforces Round 555 (Div. 3) {1157} | PROGRAMMING | 66737 | 2300 | |
| 4549 | Sequence Sorting | dp greedy two pointers | Statement | D | Technocup 2020 - Elimination Round 1 {1223} | PROGRAMMING | Сodeforces Round 591 (and Technocup 2020 — Elimination Round 1) Editorial | 2000 | |
| 812 | Discarding Game | dp greedy two pointers | Statement | G | 2019-2020 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Teams Preferred) {1250} | PROGRAMMING | 2400 | ||
| 8341 | Yet Another Monster Killing Problem | binary search data structures dp greedy sortings two pointers | Statement | D | Educational Codeforces Round 76 (Rated for Div. 2) {1257} | PROGRAMMING | Educational Codeforces Round 76 Editorial | 1700 | |
| 18067 | Air Conditioner | dp greedy implementation sortings two pointers | Statement | C | Codeforces Round 620 (Div. 2) {1304} | PROGRAMMING | 1500.0 | Codeforces Round #620 (Div. 2) Editorial | 1500 |
| 45424 | Alternating Subsequence | dp greedy two pointers | Statement | C | Codeforces Round 636 (Div. 3) {1343} | PROGRAMMING | 76352 | 1100 | |
| 29627 | New Theatre Square | brute force dp greedy implementation two pointers | Statement | B | Educational Codeforces Round 88 (Rated for Div. 2) {1359} | PROGRAMMING | Educational Codeforces Round 88 Editorial | 1000 | |
| 4688 | Two Arrays | binary search brute force combinatorics dp greedy implementation two pointers | Statement | E | Educational Codeforces Round 89 (Rated for Div. 2) {1366} | PROGRAMMING | Educational Codeforces Round 89 Editorial | ||
| 2025 | Flying Sort (Hard Version) | binary search dp greedy two pointers | Statement | F2 | Codeforces Round 650 (Div. 3) {1367} | PROGRAMMING | Codeforces Round #650 (Div. 3) Editorial | ||
| 3725 | Flying Sort (Easy Version) | dp greedy two pointers | Statement | F1 | Codeforces Round 650 (Div. 3) {1367} | PROGRAMMING | Codeforces Round #650 (Div. 3) Editorial | ||
| 839 | 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 |
| 20833 | Good String | brute force dp greedy implementation two pointers | Statement | C | Educational Codeforces Round 92 (Rated for Div. 2) {1389} | PROGRAMMING | 80809 | ||
| 7171 | 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 |
| 11778 | 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 | ||
| 31180 | Strange Birthday Party | dp greedy sortings two pointers | Statement | A | Codeforces Round 694 (Div. 1) {1470} | PROGRAMMING | 500.0 | 86464 | |
| 11371 | 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 | ||
| 17715 | Maximum width | data structures dp greedy two pointers | Statement | C | Codeforces Round 704 (Div. 2) {1492} | PROGRAMMING | 1500.0 | Codeforces Round #704 Editorial | |
| 4929 | Maximize the Remaining String | brute force data structures dp greedy strings two pointers | Statement | G | Codeforces Round 710 (Div. 3) {1506} | PROGRAMMING | Editorial | ||
| 18040 | Unstable String | dp greedy implementation strings two pointers | Statement | C | Educational Codeforces Round 110 (Rated for Div. 2) {1535} | PROGRAMMING | 91481 | ||
| 24731 | Pair Programming | dp greedy two pointers | Statement | C | Codeforces Round 731 (Div. 3) {1547} | PROGRAMMING | Codeforces Round #731 (Div. 3) Editorial | ||
| 1971 | 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 | ||
| 7455 | 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) | |
| 4449 | 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 | |
| 12028 | Monsters And Spells | data structures dp fft greedy implementation two pointers | Statement | C | Educational Codeforces Round 121 (Rated for Div. 2) {1626} | PROGRAMMING | 99136 | ||
| 5468 | 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 | |
| 221 | 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 | |
| 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 | ||
| 1423 | 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 | ||
| 6006 | 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 | |
| 7171 | 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 | |
| 7267 | Moscow Gorillas | dp greedy implementation two pointers | Statement | D | Codeforces Round 852 (Div. 2) {1793} | PROGRAMMING | 1750.0 | Codeforces Round #852 Editorial | |
| 4660 | 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 |
| 3272 | 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 |
| 8102 | 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. | |
| 30913 | 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 | |
| 6513 | 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 | |
| 36006 | Find the Different Ones! | binary search brute force data structures dp greedy two pointers | Statement | D | Codeforces Round 923 (Div. 3) {1927} | PROGRAMMING | 125597 | ||
| 12718 | 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 | ||
| 22406 | 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 | |
| 7278 | 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 | ||
| 7830 | Valuable Cards | dp greedy number theory two pointers | Statement | F | Codeforces Round 957 (Div. 3) {1992} | PROGRAMMING | Shayan's Video Tutorial | ||
| 664 | 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 | |
| 853 | 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 | |
| 5350 | 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) | |
| 1953 | 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 | |
| 7200 | 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 | |
| 10360 | 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 | |
| 10206 | 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 | |
| 21359 | 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 | |
| 5955 | 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 | |
| 111 | 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 | |
| 2319 | Kevin and Binary String (Easy Version) | binary search brute force data structures dp greedy implementation strings two pointers | Statement | F1 | IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) {2061} | PROGRAMMING | 2000.0 | IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2) Editorial | |
| 5200 | Game With Triangles | binary search data structures dp greedy math ternary search two pointers | Statement | D | Codeforces Round 1000 (Div. 2) {2063} | PROGRAMMING | 2250.0 | Codeforces Round 1000 (Div. 2) — Editorial | |
| 12761 | Flower Boy | binary search dp greedy two pointers | Statement | D | Codeforces Round 1020 (Div. 3) {2106} | PROGRAMMING | Codeforces Round 1020 (Div. 3) Editorial | ||
| 2282 | Inverse Minimum Partition (Easy Version) | binary search data structures dp greedy math two pointers | Statement | D1 | Codeforces Round 1058 (Div. 1) {2159} | PROGRAMMING | 1500.0 | Codeforces Round 1058 Editorial | |
| 2921 | Locked Out | binary search data structures dp graphs greedy implementation two pointers | Statement | D | Pinely Round 5 (Div. 1 + Div. 2) {2161} | PROGRAMMING | 2250.0 | ||
| 11704 | Sub-RBS (Easy Version) | combinatorics constructive algorithms dp greedy strings two pointers | Statement | B1 | Codeforces Round 1073 (Div. 1) {2190} | PROGRAMMING | 750.0 | Codeforces Round 1073 (Div. 1, Div. 2) Editorial | |
| 5445 | Good Schedule | dp graphs greedy two pointers | Statement | D | Educational Codeforces Round 190 (Rated for Div. 2) {2230} | PROGRAMMING | Educational Codeforces Round 190 — Editorial | ||
| 12347 | Seating Arrangement (Easy Version) | binary search dp greedy ternary search two pointers | Statement | C1 | Codeforces Round 1101 (Div. 2) {2232} | PROGRAMMING | 750.0 | Codeforces Round 1101 (Div. 2) — Editorial | |
| 1977 | Cake Trial | dp greedy two pointers | Statement | E | Codeforces Round 1106 (Div. 2) {2238} | PROGRAMMING | 2250.0 | Codeforces Round 1106 (Div. 2) Editorial |