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Name |
Tags |
Solutions |
Index |
Contest |
Type |
Points |
Tutorial |
Rating Level |
|---|---|---|---|---|---|---|---|---|---|
| 18743 | Longest Palindrome | brute force constructive algorithms greedy implementation strings | Statement | B | Codeforces Round 620 (Div. 2) {1304} | PROGRAMMING | 1000.0 | Codeforces Round #620 (Div. 2) Editorial | 1100 |
| 17719 | 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 |
| 3265 | Kuroni and the Score Distribution | constructive algorithms greedy implementation math | Statement | E | Ozon Tech Challenge 2020 (Div.1 + Div.2, Rated, T-shirts + prizes!) {1305} | PROGRAMMING | 2000.0 | Ozon Tech Challenge 2020 Editorial | 2100 |
| 1362 | Cow and Treats | binary search combinatorics dp greedy implementation math | Statement | E | Codeforces Round 621 (Div. 1 + Div. 2) {1307} | PROGRAMMING | 2500.0 | Codeforces Round #621 (Div. 1 + Div. 2) Editorial | 2400 |
| 15621 | Cow and Haybales | greedy implementation | Statement | A | Codeforces Round 621 (Div. 1 + Div. 2) {1307} | PROGRAMMING | 500.0 | Codeforces Round #621 (Div. 1 + Div. 2) Editorial | 800 |
| 574 | Double Elimination | dp implementation | Statement | B | VK Cup 2019-2020 - Elimination Round (Engine) {1310} | PROGRAMMING | 1000.0 | VK Cup 2019-2020 - Elimination Round (Engine) and Codeforces Round #623 | 2500 |
| 4810 | Moving Points | data structures divide and conquer implementation sortings | Statement | F | Codeforces Round 624 (Div. 3) {1311} | PROGRAMMING | 74224 | 2100 | |
| 46143 | Add Odd or Subtract Even | greedy implementation math | Statement | A | Codeforces Round 624 (Div. 3) {1311} | PROGRAMMING | 74224 | 700 | |
| 18314 | Adding Powers | bitmasks greedy implementation math number theory ternary search | Statement | C | Educational Codeforces Round 83 (Rated for Div. 2) {1312} | PROGRAMMING | 74640 | ||
| 7006 | Different Rules | binary search constructive algorithms greedy implementation math | Statement | B | Codeforces Round 622 (Div. 2) {1313} | PROGRAMMING | 1000.0 | Editorial | 1700 |
| 1497 | Happy New Year | bitmasks dp implementation | Statement | D | Codeforces Round 622 (Div. 2) {1313} | PROGRAMMING | 2000.0 | Editorial | 2600 |
| 16212 | Fast Food Restaurant | brute force greedy implementation | Statement | A | Codeforces Round 622 (Div. 2) {1313} | PROGRAMMING | 500.0 | Editorial | 900 |
| 12909 | Dead Pixel | implementation | Statement | A | Codeforces Round 623 (Div. 2, based on VK Cup 2019-2020 - Elimination Round, Engine) {1315} | PROGRAMMING | 500.0 | VK Cup 2019-2020 - Elimination Round (Engine) and Codeforces Round #623 | 700 |
| 11719 | String Modification | brute force constructive algorithms implementation sortings strings | Statement | B | CodeCraft-20 (Div. 2) {1316} | PROGRAMMING | 1000.0 | Codecraft-20 (Div.2) Editorial | 1400 |
| 3537 | Nash Matrix | constructive algorithms dfs and similar graphs implementation | Statement | D | CodeCraft-20 (Div. 2) {1316} | PROGRAMMING | 1750.0 | Codecraft-20 (Div.2) Editorial | 2000 |
| 19637 | Grade Allocation | implementation | Statement | A | CodeCraft-20 (Div. 2) {1316} | PROGRAMMING | 500.0 | Codecraft-20 (Div.2) Editorial | 700 |
| 20861 | Even Subset Sum Problem | brute force dp greedy implementation | Statement | A | Codeforces Round 626 (Div. 2, based on Moscow Open Olympiad in Informatics) {1323} | PROGRAMMING | 500.0 | Codeforces Round #626 Editorial | |
| 11703 | Count Subrectangles | greedy implementation | Statement | B | Codeforces Round 626 (Div. 2, based on Moscow Open Olympiad in Informatics) {1323} | PROGRAMMING | 1000.0 | Codeforces Round #626 Editorial | |
| 30424 | Frog Jumps | binary search data structures greedy implementation | Statement | C | Codeforces Round 627 (Div. 3) {1324} | PROGRAMMING | Codeforces Round #627 (Div. 3) Editorial | ||
| 27280 | Yet Another Tetris Problem | implementation number theory | Statement | A | Codeforces Round 627 (Div. 3) {1324} | PROGRAMMING | Codeforces Round #627 (Div. 3) Editorial | ||
| 38766 | CopyCopyCopyCopyCopy | greedy implementation | Statement | B | Codeforces Round 628 (Div. 2) {1325} | PROGRAMMING | 750.0 | 74235 | 800 |
| 25244 | Maximums | implementation math | Statement | B | Codeforces Global Round 7 {1326} | PROGRAMMING | 1000.0 | 74961 | 900 |
| 33018 | Ternary XOR | greedy implementation | Statement | C | Codeforces Round 629 (Div. 3) {1328} | PROGRAMMING | 75246 | 1200 | |
| 31976 | K-th Beautiful String | combinatorics implementation math | Statement | B | Codeforces Round 629 (Div. 3) {1328} | PROGRAMMING | 75246 | 1300 | |
| 9656 | Dreamoon Likes Coloring | constructive algorithms greedy implementation math | Statement | A | Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov! {1329} | PROGRAMMING | 500.0 | Codeforces Round #631 Editorial | 1800 |
| 1802 | Drazil Likes Heap | constructive algorithms data structures greedy implementation sortings | Statement | C | Codeforces Round 631 (Div. 1) - Thanks, Denis aramis Shitov! {1329} | PROGRAMMING | 1500.0 | Codeforces Round #631 Editorial | 2400 |
| 19441 | Dreamoon and Ranking Collection | implementation | Statement | A | Codeforces Round 631 (Div. 2) - Thanks, Denis aramis Shitov! {1330} | PROGRAMMING | 500.0 | Codeforces Round #631 Editorial | 1000 |
| 14512 | Dreamoon Likes Permutations | implementation math | Statement | B | Codeforces Round 631 (Div. 2) - Thanks, Denis aramis Shitov! {1330} | PROGRAMMING | 1000.0 | Codeforces Round #631 Editorial | 1400 |
| 1238 | Jordan Smiley | dfs and similar geometry implementation | Statement | E | April Fools Day Contest 2020 {1331} | PROGRAMMING | April Fools Day Contest 2020: editorial | ||
| 12099 | Again? | implementation | Statement | D | April Fools Day Contest 2020 {1331} | PROGRAMMING | April Fools Day Contest 2020: editorial | ||
| 19852 | Exercising Walk | greedy implementation math | Statement | A | Codeforces Round 630 (Div. 2) {1332} | PROGRAMMING | 500.0 | Codeforces Round #630 Editorial | 1200 |
| 20761 | K-Complete Word | dfs and similar dsu greedy implementation strings | Statement | C | Codeforces Round 630 (Div. 2) {1332} | PROGRAMMING | 1250.0 | Codeforces Round #630 Editorial | 1500 |
| 13285 | Eugene and an array | binary search data structures hashing implementation two pointers | Statement | C | Codeforces Round 632 (Div. 2) {1333} | PROGRAMMING | 1250.0 | Codeforces Round #632 (Div. 2) editorial | |
| 4128 | Challenges in school №41 | brute force constructive algorithms games graphs greedy implementation sortings | Statement | D | Codeforces Round 632 (Div. 2) {1333} | PROGRAMMING | 1750.0 | Codeforces Round #632 (Div. 2) editorial | |
| 22214 | Kind Anton | greedy implementation | Statement | B | Codeforces Round 632 (Div. 2) {1333} | PROGRAMMING | 750.0 | Codeforces Round #632 (Div. 2) editorial | |
| 4566 | Kate and imperfection | greedy implementation math number theory sortings two pointers | Statement | F | Codeforces Round 632 (Div. 2) {1333} | PROGRAMMING | 2500.0 | Codeforces Round #632 (Div. 2) editorial | |
| 7718 | Minimum Euler Cycle | constructive algorithms graphs greedy implementation | Statement | D | Educational Codeforces Round 85 (Rated for Div. 2) {1334} | PROGRAMMING | Educational Codeforces Round 85 Editorial | ||
| 24338 | Level Statistics | implementation math | Statement | A | Educational Codeforces Round 85 (Rated for Div. 2) {1334} | PROGRAMMING | Educational Codeforces Round 85 Editorial | ||
| 38877 | Two Teams Composing | binary search greedy implementation sortings | Statement | C | Codeforces Round 634 (Div. 3) {1335} | PROGRAMMING | 75993 | 1100 | |
| 29413 | Anti-Sudoku | constructive algorithms implementation | Statement | D | Codeforces Round 634 (Div. 3) {1335} | PROGRAMMING | 75993 | 1300 | |
| 36818 | Kana and Dragon Quest game | greedy implementation math | Statement | B | Codeforces Round 635 (Div. 2) {1337} | PROGRAMMING | 1000.0 | Codeforces Round #635 Editorial | 1000 |
| 3436 | Perfect Triples | bitmasks brute force constructive algorithms divide and conquer greedy implementation math | Statement | C | Codeforces Round 633 (Div. 1) {1338} | PROGRAMMING | 1500.0 | Editorial | |
| 13686 | Nastya and Strange Generator | brute force data structures greedy implementation | Statement | A | Codeforces Round 637 (Div. 1) - Thanks, Ivan Belonogov! {1340} | PROGRAMMING | 500.0 | Codeforces Round #637 Editorial | |
| 21053 | Nastya and Door | greedy implementation | Statement | B | Codeforces Round 637 (Div. 2) - Thanks, Ivan Belonogov! {1341} | PROGRAMMING | 1000.0 | Codeforces Round #637 Editorial | |
| 1392 | Restore the Permutation by Sorted Segments | brute force constructive algorithms data structures greedy implementation | Statement | F | Codeforces Round 636 (Div. 3) {1343} | PROGRAMMING | 76352 | 2800 | |
| 4803 | Orac and Game of Life | dfs and similar graphs implementation shortest paths | Statement | C | Codeforces Round 641 (Div. 1) {1349} | PROGRAMMING | 1250.0 | Codeforces Round #641 Editorial | 2000 |
| 9265 | Skier | data structures implementation | Statement | C | Testing Round 16 (Unrated) {1351} | PROGRAMMING | 1500.0 | 1400 | |
| 26851 | A+B (Trial Problem) | implementation | Statement | A | Testing Round 16 (Unrated) {1351} | PROGRAMMING | 500.0 | 800 | |
| 18495 | Square? | brute force implementation math | Statement | B | Testing Round 16 (Unrated) {1351} | PROGRAMMING | 1000.0 | 900 | |
| 29707 | Alice, Bob and Candies | implementation | Statement | D | Codeforces Round 640 (Div. 4) {1352} | PROGRAMMING | 77161 | 1300 | |
| 23901 | Special Elements | brute force implementation two pointers | Statement | E | Codeforces Round 640 (Div. 4) {1352} | PROGRAMMING | 77161 | 1500 | |
| 103475 | Sum of Round Numbers | implementation math | Statement | A | Codeforces Round 640 (Div. 4) {1352} | PROGRAMMING | 77161 | 800 | |
| 35174 | Ternary String | binary search dp implementation two pointers | Statement | B | Educational Codeforces Round 87 (Rated for Div. 2) {1354} | PROGRAMMING | 77593 | 1200 | |
| 28748 | Sequence with Digits | brute force implementation math | Statement | A | Codeforces Round 643 (Div. 2) {1355} | PROGRAMMING | 750.0 | Codeforces Round #643 (Div. 2) Editorial | 1200 |
| 11912 | Count Triangles | binary search implementation math two pointers | Statement | C | Codeforces Round 643 (Div. 2) {1355} | PROGRAMMING | 1250.0 | Codeforces Round #643 (Div. 2) Editorial | 1800 |
| 8701 | The Best Vacation | binary search brute force greedy implementation two pointers | Statement | D | Codeforces Round 645 (Div. 2) {1358} | PROGRAMMING | 1500.0 | Codeforces Round #645 (Div. 2) Editorial | 1900 |
| 2449 | Are You Fired? | constructive algorithms data structures dp greedy implementation | Statement | E | Codeforces Round 645 (Div. 2) {1358} | PROGRAMMING | 2000.0 | Codeforces Round #645 (Div. 2) Editorial | 2400 |
| 501 | Tasty Cookie | binary search constructive algorithms greedy implementation | Statement | F | Codeforces Round 645 (Div. 2) {1358} | PROGRAMMING | 2500.0 | Codeforces Round #645 (Div. 2) Editorial | 2700 |
| 29358 | 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 | |
| 10689 | Yet Another Yet Another Task | data structures dp implementation two pointers | Statement | D | Educational Codeforces Round 88 (Rated for Div. 2) {1359} | PROGRAMMING | Educational Codeforces Round 88 Editorial | 2000 | |
| 27931 | Polygon | dp graphs implementation shortest paths | Statement | E | Codeforces Round 644 (Div. 3) {1360} | PROGRAMMING | Codeforces Round #644 (Div. 3) Editorial | 1300 | |
| 3843 | Johnny and Grandmaster | greedy implementation math sortings | Statement | B | Codeforces Round 647 (Div. 1) - Thanks, Algo Muse! {1361} | PROGRAMMING | 1250.0 | Codeforces Round #647 Editorial | 1900 |
| 340 | Johnny and James | greedy implementation math trees | Statement | D | Codeforces Round 647 (Div. 1) - Thanks, Algo Muse! {1361} | PROGRAMMING | 2500.0 | Codeforces Round #647 Editorial | 2900 |
| 172 | Johnny and New Toy | data structures implementation math | Statement | F | Codeforces Round 647 (Div. 1) - Thanks, Algo Muse! {1361} | PROGRAMMING | 3500.0 | Codeforces Round #647 Editorial | 3300 |
| 33813 | Johnny and Ancient Computer | implementation | Statement | A | Codeforces Round 647 (Div. 2) - Thanks, Algo Muse! {1362} | PROGRAMMING | 500.0 | Codeforces Round #647 Editorial | 1000 |
| 40288 | Odd Selection | brute force implementation math | Statement | A | Codeforces Round 646 (Div. 2) {1363} | PROGRAMMING | 500.0 | 78202 | 1200 |
| 26083 | Subsequence Hate | implementation strings | Statement | B | Codeforces Round 646 (Div. 2) {1363} | PROGRAMMING | 1000.0 | 78202 | 1400 |
| 4405 | Guess The Maximums | binary search divide and conquer implementation interactive math | Statement | D | Codeforces Round 646 (Div. 2) {1363} | PROGRAMMING | 2000.0 | 78202 | 2100 |
| 4951 | Ehab's Last Corollary | constructive algorithms data structures dfs and similar dp graphs implementation trees | Statement | D | Codeforces Round 649 (Div. 2) {1364} | PROGRAMMING | 2000.0 | Codeforces round #649 editorial | 2100 |
| 25026 | Matrix Game | games greedy implementation | Statement | A | Codeforces Round 648 (Div. 2) {1365} | PROGRAMMING | 500.0 | Editorial — Codeforces Round #648 | 1100 |
| 28799 | Trouble Sort | constructive algorithms implementation | Statement | B | Codeforces Round 648 (Div. 2) {1365} | PROGRAMMING | 750.0 | Editorial — Codeforces Round #648 | 1300 |
| 24942 | Rotation Matching | constructive algorithms data structures greedy implementation | Statement | C | Codeforces Round 648 (Div. 2) {1365} | PROGRAMMING | 1250.0 | Editorial — Codeforces Round #648 | 1400 |
| 20687 | Solve The Maze | constructive algorithms dfs and similar dsu graphs greedy implementation shortest paths | Statement | D | Codeforces Round 648 (Div. 2) {1365} | PROGRAMMING | 1500.0 | Editorial — Codeforces Round #648 | 1700 |
| 4740 | Swaps Again | constructive algorithms implementation sortings | Statement | F | Codeforces Round 648 (Div. 2) {1365} | PROGRAMMING | 2500.0 | Editorial — Codeforces Round #648 | 2100 |
| 4616 | 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 | ||
| 8768 | Task On The Board | constructive algorithms greedy implementation sortings | Statement | D | Codeforces Round 650 (Div. 3) {1367} | PROGRAMMING | Codeforces Round #650 (Div. 3) Editorial | ||
| 67431 | Short Substrings | implementation strings | Statement | A | Codeforces Round 650 (Div. 3) {1367} | PROGRAMMING | Codeforces Round #650 (Div. 3) Editorial | ||
| 1104 | Lamps on a Circle | games greedy implementation interactive math | Statement | F | Codeforces Global Round 8 {1368} | PROGRAMMING | 3000.0 | Codeforces Global Round 8: editorial | |
| 25545 | AccurateLee | greedy implementation strings | Statement | B | Codeforces Round 652 (Div. 2) {1369} | PROGRAMMING | 1000.0 | Codeforces Round #652 (Div. 2) Editorial | 1200 |
| 2450 | DeadLee | constructive algorithms data structures graphs greedy implementation sortings | Statement | E | Codeforces Round 652 (Div. 2) {1369} | PROGRAMMING | 2500.0 | Codeforces Round #652 (Div. 2) Editorial | 2400 |
| 5216 | Binary Subsequence Rotation | binary search data structures dp greedy implementation | Statement | E | Codeforces Round 651 (Div. 2) {1370} | PROGRAMMING | 2500.0 | Editorial — Codeforces Round #651 | |
| 10812 | Odd-Even Subsequence | binary search dp greedy implementation sortings | Statement | D | Codeforces Round 651 (Div. 2) {1370} | PROGRAMMING | 2000.0 | Editorial — Codeforces Round #651 | |
| 64005 | Maximum GCD | brute force greedy implementation number theory | Statement | A | Codeforces Round 651 (Div. 2) {1370} | PROGRAMMING | 500.0 | Editorial — Codeforces Round #651 | |
| 5523 | Asterism (Easy Version) | brute force combinatorics implementation math number theory sortings | Statement | E1 | Codeforces Round 654 (Div. 2) {1371} | PROGRAMMING | 1500.0 | Codeforces Round #654 (Div. 2) Editorial | |
| 21352 | A Cookie for You | constructive algorithms greedy implementation math | Statement | C | Codeforces Round 654 (Div. 2) {1371} | PROGRAMMING | 1250.0 | Codeforces Round #654 (Div. 2) Editorial | |
| 689 | Raging Thunder | data structures implementation | Statement | F | Codeforces Round 654 (Div. 2) {1371} | PROGRAMMING | 3000.0 | Codeforces Round #654 (Div. 2) Editorial | |
| 33453 | Omkar and Completion | constructive algorithms implementation | Statement | A | Codeforces Round 655 (Div. 2) {1372} | PROGRAMMING | 500.0 | Codeforces Round #655 Editorial | 800 |
| 19332 | Pluses and Minuses | binary search dp greedy implementation math | Statement | C | Educational Codeforces Round 90 (Rated for Div. 2) {1373} | PROGRAMMING | Educational Codeforces Round 90 Editorial | ||
| 52280 | 01 Game | brute force constructive algorithms dp games implementation strings | Statement | B | Educational Codeforces Round 90 (Rated for Div. 2) {1373} | PROGRAMMING | Educational Codeforces Round 90 Editorial | ||
| 29420 | Donut Shops | greedy implementation math | Statement | A | Educational Codeforces Round 90 (Rated for Div. 2) {1373} | PROGRAMMING | Educational Codeforces Round 90 Editorial | ||
| 1392 | Cyclic Shifts Sorting | brute force constructive algorithms implementation | Statement | F | Codeforces Round 653 (Div. 3) {1374} | PROGRAMMING | 79517 | ||
| 14943 | Reading Books (easy version) | data structures greedy implementation sortings | Statement | E1 | Codeforces Round 653 (Div. 3) {1374} | PROGRAMMING | 79517 | ||
| 10050 | Replace by MEX | brute force constructive algorithms implementation | Statement | D | Codeforces Global Round 9 {1375} | PROGRAMMING | 1750.0 | 79731 | |
| 12325 | Acacius and String | brute force implementation strings | Statement | A | Codeforces Round 657 (Div. 2) {1379} | PROGRAMMING | 500.0 | Codeforces Round #657 Editorial | 1500 |
| 2406 | Merging Towers | data structures dsu implementation trees | Statement | E | Educational Codeforces Round 91 (Rated for Div. 2) {1380} | PROGRAMMING | Educational Codeforces Round 91 Editorial | ||
| 1708 | Mastermind | constructive algorithms greedy implementation sortings | Statement | C | Codeforces Round 658 (Div. 1) {1381} | PROGRAMMING | 2000.0 | Codeforces Round #658 Editorial | 2500 |
| 21815 | a-Good String | bitmasks brute force divide and conquer dp implementation | Statement | D | Codeforces Round 656 (Div. 3) {1385} | PROGRAMMING | Codeforces Round #656 (Div. 3) Editorial | 1500 | |
| 1809 | Columns Swaps | 2-sat dfs and similar dsu graphs implementation | Statement | G | Codeforces Round 656 (Div. 3) {1385} | PROGRAMMING | Codeforces Round #656 (Div. 3) Editorial | 2300 | |
| 2813 | Removing Leaves | data structures dfs and similar divide and conquer greedy implementation trees | Statement | F | Codeforces Round 656 (Div. 3) {1385} | PROGRAMMING | Codeforces Round #656 (Div. 3) Editorial | 2300 | |
| 6902 | Captain Flint and Treasure | data structures dfs and similar dp graphs greedy implementation trees | Statement | D | Codeforces Round 660 (Div. 2) {1388} | PROGRAMMING | 2000.0 | Codeforces Round #660 Editorial | 2000 |
| 4546 | Segment Intersections | binary search brute force greedy implementation math | Statement | D | Educational Codeforces Round 92 (Rated for Div. 2) {1389} | PROGRAMMING | 80809 | ||
| 20523 | Good String | brute force dp greedy implementation two pointers | Statement | C | Educational Codeforces Round 92 (Rated for Div. 2) {1389} | PROGRAMMING | 80809 | ||
| 5751 | 505 | bitmasks brute force dp implementation | Statement | D | Codeforces Round 663 (Div. 2) {1391} | PROGRAMMING | 2000.0 | Codeforces Round #663 (Div. 2) Editorial | |
| 29730 | Fix You | brute force greedy implementation | Statement | B | Codeforces Round 663 (Div. 2) {1391} | PROGRAMMING | 750.0 | Codeforces Round #663 (Div. 2) Editorial | |
| 19574 | Omkar and Waterslide | greedy implementation | Statement | C | Codeforces Global Round 10 {1392} | PROGRAMMING | 1000.0 | Codeforces Global Round 10 — Editorial | |
| 18882 | Omkar and Infinity Clock | implementation math | Statement | B | Codeforces Global Round 10 {1392} | PROGRAMMING | 750.0 | Codeforces Global Round 10 — Editorial | |
| 4181 | Rarity and New Dress | data structures dp graphs implementation | Statement | D | Codeforces Round 662 (Div. 2) {1393} | PROGRAMMING | 1750.0 | Codeforces Round #662 Editorial | |
| 17353 | Applejack and Storages | data structures greedy implementation | Statement | B | Codeforces Round 662 (Div. 2) {1393} | PROGRAMMING | 1000.0 | Codeforces Round #662 Editorial | |
| 446 | Twilight and Ancient Scroll (easier version) | dp hashing implementation string suffix structures strings | Statement | E1 | Codeforces Round 662 (Div. 2) {1393} | PROGRAMMING | 1500.0 | Codeforces Round #662 Editorial | |
| 438 | Twilight and Ancient Scroll (harder version) | dp implementation string suffix structures strings | Statement | E2 | Codeforces Round 662 (Div. 2) {1393} | PROGRAMMING | 1500.0 | Codeforces Round #662 Editorial | |
| 2143 | Boboniu Walks on Graph | brute force graphs hashing implementation meet-in-the-middle | Statement | B | Codeforces Round 664 (Div. 1) {1394} | PROGRAMMING | 1000.0 | Codeforces Round #664 Editorial | 2300 |
| 2592 | Two Types of Spells | binary search data structures greedy implementation math sortings | Statement | E | Educational Codeforces Round 93 (Rated for Div. 2) {1398} | PROGRAMMING | Educational Codeforces Round 93 Editorial | ||
| 2628 | Divide Square | data structures divide and conquer geometry implementation sortings | Statement | E | Codeforces Round 665 (Div. 2) {1401} | PROGRAMMING | 2500.0 | Codeforces Round #665 (Div. 2) Editorial | |
| 75 | Chess Rush | *special combinatorics dp implementation math | Statement | C | Central-European Olympiad in Informatics, CEOI 2020, Day 2 (IOI, Unofficial Mirror Contest, Unrated) {1403} | PROGRAMMING | CEOI 2020 Online Mirror — Day 2 Tutorial | ||
| 19314 | Balanced Bitstring | implementation strings | Statement | A | Codeforces Round 668 (Div. 1) {1404} | PROGRAMMING | 500.0 | Codeforces Round #668 Editorial | |
| 24421 | Maximum Product | brute force dp greedy implementation sortings | Statement | B | Codeforces Round 670 (Div. 2) {1406} | PROGRAMMING | 1000.0 | Codeforces Round #670 (Div. 2) Editorial | |
| 22909 | Subset Mex | greedy implementation math | Statement | A | Codeforces Round 670 (Div. 2) {1406} | PROGRAMMING | 500.0 | Codeforces Round #670 (Div. 2) Editorial | |
| 4666 | Searchlights | binary search brute force data structures dp geometry implementation sortings | Statement | D | Grakn Forces 2020 {1408} | PROGRAMMING | 2000.0 | Grakn Forces -- Editorial | |
| 9264 | Discrete Acceleration | binary search implementation math two pointers | Statement | C | Grakn Forces 2020 {1408} | PROGRAMMING | 1250.0 | Grakn Forces -- Editorial | |
| 2708 | Grime Zoo | constructive algorithms greedy implementation | Statement | D | Technocup 2021 - Elimination Round 3 {1411} | PROGRAMMING | 2000.0 | Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial | |
| 1812 | Poman Numbers | greedy implementation math | Statement | E | Technocup 2021 - Elimination Round 3 {1411} | PROGRAMMING | 2250.0 | Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial | |
| 21725 | In-game Chat | implementation | Statement | A | Technocup 2021 - Elimination Round 3 {1411} | PROGRAMMING | 500.0 | Technocup 2021 Elimination Round 3 and Round #692 (Div. 1 + Div. 2) Editorial | |
| 6213 | 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 | |
| 6908 | Shurikens | data structures greedy implementation | Statement | D | Technocup 2021 - Elimination Round 1 {1413} | PROGRAMMING | 2000.0 | Codeforces Round 679 (Div. 1, Div. 2) and Technocup Round 1 editorial | |
| 12004 | A New Technique | implementation | Statement | B | Technocup 2021 - Elimination Round 1 {1413} | PROGRAMMING | 1000.0 | Codeforces Round 679 (Div. 1, Div. 2) and Technocup Round 1 editorial | |
| 11712 | Bouncing Ball | brute force dp implementation | Statement | C | Technocup 2021 - Elimination Round 2 {1415} | PROGRAMMING | 1250.0 | Editorial of Codeforces Round 687 (Technocup 2021 — Elimitation Round 2) | |
| 16619 | 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 |
| 4733 | 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) | ||
| 17367 | 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 | |
| 561 | Rain of Fire | binary search dfs and similar dsu graphs implementation sortings | Statement | F | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 3000.0 | Codeforces Round #671 Editorial | |
| 26357 | Sage's Birthday (easy version) | binary search greedy implementation sortings | Statement | D1 | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 750.0 | Codeforces Round #671 Editorial | |
| 3494 | Decryption | bitmasks constructive algorithms implementation math number theory | Statement | E | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 2250.0 | Codeforces Round #671 Editorial | |
| 16949 | Stairs | brute force constructive algorithms greedy implementation math two pointers | Statement | B | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 750.0 | Codeforces Round #671 Editorial | |
| 20507 | Digit Game | games implementation | Statement | A | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 500.0 | Codeforces Round #671 Editorial | |
| 16286 | Killjoy | greedy implementation math | Statement | C | Codeforces Round 671 (Div. 2) {1419} | PROGRAMMING | 1250.0 | Codeforces Round #671 Editorial | |
| 5180 | Pokémon Army (hard version) | data structures divide and conquer dp greedy implementation | Statement | C2 | Codeforces Round 672 (Div. 2) {1420} | PROGRAMMING | 1250.0 | ||
| 961 | Swedish Heroes | brute force dp implementation | Statement | E | Codeforces Round 676 (Div. 2) {1421} | PROGRAMMING | 2500.0 | Codeforces Round #676 (Div. 2) Editorial | |
| 4375 | Hexagons | brute force implementation math shortest paths ternary search | Statement | D | Codeforces Round 676 (Div. 2) {1421} | PROGRAMMING | 2000.0 | Codeforces Round #676 (Div. 2) Editorial | |
| 13465 | Putting Bricks in the Wall | constructive algorithms implementation | Statement | B | Codeforces Round 676 (Div. 2) {1421} | PROGRAMMING | 1000.0 | Codeforces Round #676 (Div. 2) Editorial | |
| 3117 | Returning Home | data structures graphs implementation shortest paths sortings | Statement | D | Codeforces Round 675 (Div. 2) {1422} | PROGRAMMING | 1500.0 | Codeforces Round #675 (Div. 2) Editorial | |
| 851 | Minlexes | dp greedy implementation strings | Statement | E | Codeforces Round 675 (Div. 2) {1422} | PROGRAMMING | 2000.0 | Codeforces Round #675 (Div. 2) Editorial | |
| 14997 | Nice Matrix | greedy implementation ternary search | Statement | B | Codeforces Round 675 (Div. 2) {1422} | PROGRAMMING | 750.0 | Codeforces Round #675 (Div. 2) Editorial | |
| 155 | Lookup Tables | bitmasks | Statement | I | Bubble Cup 13 - Finals [Online Mirror, unrated, Div. 1] {1423} | PROGRAMMING | FinalsEditorial2020.pdf | ||
| 1012 | Excitation of Atoms | greedy implementation | Statement | E | 2020 ICPC, COMPFEST 12, Indonesia Multi-Provincial Contest (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1425} | PROGRAMMING | Tutorial | 2200 | |
| 54789 | Floor Number | implementation math | Statement | A | Codeforces Round 674 (Div. 3) {1426} | PROGRAMMING | 83120 | 800 | |
| 21775 | Symmetric Matrix | implementation | Statement | B | Codeforces Round 674 (Div. 3) {1426} | PROGRAMMING | 83120 | 900 | |
| 11438 | Chess Cheater | greedy implementation sortings | Statement | B | Codeforces Global Round 11 {1427} | PROGRAMMING | 750.0 | Editorial of Global Round 11 | 1400 |
| 3690 | Unshuffling a Deck | constructive algorithms implementation | Statement | D | Codeforces Global Round 11 {1427} | PROGRAMMING | 1000.0 | Editorial of Global Round 11 | 2000 |
| 15164 | Belted Rooms | graphs implementation | Statement | B | Codeforces Raif Round 1 (Div. 1 + Div. 2) {1428} | PROGRAMMING | 1000.0 | Codeforces Raif Round 1 Editorial | |
| 28112 | Numbers on Whiteboard | constructive algorithms data structures games implementation math | Statement | C | Educational Codeforces Round 96 (Rated for Div. 2) {1430} | PROGRAMMING | Educational Codeforces Round 96 — Editorial | ||
| 20188 | Barrels | greedy implementation sortings | Statement | B | Educational Codeforces Round 96 (Rated for Div. 2) {1430} | PROGRAMMING | Educational Codeforces Round 96 — Editorial | ||
| 746 | Black Friday | *special implementation | Statement | C | Kotlin Heroes 5: ICPC Round {1431} | PROGRAMMING | 84563 | ||
| 1053 | Polycarp and the Language of Gods | *special implementation two pointers | Statement | B | Kotlin Heroes 5: ICPC Round {1431} | PROGRAMMING | 84563 | ||
| 29814 | Yet Another Bookshelf | greedy implementation | Statement | B | Codeforces Round 677 (Div. 3) {1433} | PROGRAMMING | Codeforces Round #677 (Div. 3) Editorial | ||
| 62371 | Boring Apartments | implementation math | Statement | A | Codeforces Round 677 (Div. 3) {1433} | PROGRAMMING | Codeforces Round #677 (Div. 3) Editorial | ||
| 11645 | Binary Search | binary search combinatorics | Statement | C | Codeforces Round 678 (Div. 2) {1436} | PROGRAMMING | 1500.0 | Codeforces Round #678 (Div. 2). Editorial | |
| 3904 | Make It Increasing | data structures dp implementation | Statement | E | Educational Codeforces Round 97 (Rated for Div. 2) {1437} | PROGRAMMING | 84149 | ||
| 1463 | Yurii Can Do Everything | brute force divide and conquer greedy implementation | Statement | E | Codeforces Round 682 (Div. 2) {1438} | PROGRAMMING | 2250.0 | Codeforces Round #682 (Div. 2) Editorial | |
| 5390 | Binary Table (Hard Version) | constructive algorithms graphs greedy implementation | Statement | A2 | Codeforces Round 684 (Div. 1) {1439} | PROGRAMMING | 500.0 | Codeforces Round #684[Div1 and Div2] Editorial | |
| 9796 | Binary Table (Easy Version) | constructive algorithms implementation | Statement | A1 | Codeforces Round 684 (Div. 1) {1439} | PROGRAMMING | 500.0 | Codeforces Round #684[Div1 and Div2] Editorial | |
| 20366 | Buy the String | implementation math | Statement | A | Codeforces Round 684 (Div. 2) {1440} | PROGRAMMING | 500.0 | Codeforces Round #684[Div1 and Div2] Editorial | |
| 5230 | Identify the Operations | brute force combinatorics data structures dsu greedy implementation | Statement | B | Codeforces Round 681 (Div. 1, based on VK Cup 2019-2020 - Final) {1442} | PROGRAMMING | 1000.0 | 84298 | |
| 277 | Multithreading (Hard Version) | combinatorics implementation math | Statement | H2 | Codeforces Global Round 12 {1450} | PROGRAMMING | 1750.0 | Codeforces Global Round 12 Editorial | |
| 5801 | Rating Compression | data structures implementation two pointers | Statement | D | Codeforces Global Round 12 {1450} | PROGRAMMING | 1750.0 | Codeforces Global Round 12 Editorial | |
| 17267 | String Equality | dp greedy hashing implementation strings | Statement | C | Codeforces Round 685 (Div. 2) {1451} | PROGRAMMING | 1250.0 | Editorial — Codeforces Round #685 | |
| 20176 | Non-Substring Subsequence | greedy implementation strings | Statement | B | Codeforces Round 685 (Div. 2) {1451} | PROGRAMMING | 750.0 | Editorial — Codeforces Round #685 | |
| 1688 | Two Editorials | brute force data structures greedy implementation | Statement | E | Educational Codeforces Round 98 (Rated for Div. 2) {1452} | PROGRAMMING | 84847 | ||
| 14056 | Suffix Operations | constructive algorithms implementation | Statement | B | Codeforces Round 688 (Div. 2) {1453} | PROGRAMMING | 1000.0 | Codeforces Round #688 (Div. 2) Editorial | |
| 6256 | Triangles | greedy implementation | Statement | C | Codeforces Round 688 (Div. 2) {1453} | PROGRAMMING | 1500.0 | Codeforces Round #688 (Div. 2) Editorial | |
| 24092 | Cancel the Trains | implementation | Statement | A | Codeforces Round 688 (Div. 2) {1453} | PROGRAMMING | 500.0 | Codeforces Round #688 (Div. 2) Editorial | |
| 22463 | Sequence Transformation | greedy implementation | Statement | C | Codeforces Round 686 (Div. 3) {1454} | PROGRAMMING | Codeforces Round #686 (Div. 3) Editorial | ||
| 30009 | Unique Bid Auction | implementation | Statement | B | Codeforces Round 686 (Div. 3) {1454} | PROGRAMMING | Codeforces Round #686 (Div. 3) Editorial | ||
| 1680 | Latin Square | data structures implementation math matrices | Statement | C | Codeforces Round 691 (Div. 1) {1458} | PROGRAMMING | 1500.0 | Codeforces Round #691 Editorial (finished) | |
| 10169 | Divide and Summarize | binary search brute force data structures divide and conquer implementation sortings | Statement | D | Codeforces Round 689 (Div. 2, based on Zed Code Competition) {1461} | PROGRAMMING | 1500.0 | Codeforces Round #689 (Div. 2). Editorial | |
| 2209 | Water Level | brute force graphs greedy implementation math | Statement | E | Codeforces Round 689 (Div. 2, based on Zed Code Competition) {1461} | PROGRAMMING | 2250.0 | Codeforces Round #689 (Div. 2). Editorial | |
| 11337 | Close Tuples (hard version) | binary search combinatorics implementation math sortings two pointers | Statement | E2 | Codeforces Round 690 (Div. 3) {1462} | PROGRAMMING | Codeforces Round #690 (Div. 3) Editorial | ||
| 29121 | Last Year's Substring | implementation strings | Statement | B | Codeforces Round 690 (Div. 3) {1462} | PROGRAMMING | Codeforces Round #690 (Div. 3) Editorial | ||
| 48709 | Favorite Sequence | implementation two pointers | Statement | A | Codeforces Round 690 (Div. 3) {1462} | PROGRAMMING | Codeforces Round #690 (Div. 3) Editorial | ||
| 6046 | Busy Robot | implementation math | Statement | C | Educational Codeforces Round 100 (Rated for Div. 2) {1463} | PROGRAMMING | Educational Codeforces Round 100 Editorial | ||
| 11532 | Hills And Valleys | brute force implementation | Statement | B | Codeforces Round 695 (Div. 2) {1467} | PROGRAMMING | 1000.0 | Codeforces Round #695 (Div. 2) Editorial | 1700 |
| 5595 | The Robot | brute force implementation | Statement | K | 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} | PROGRAMMING | Tutorial (PDF) | ||
| 10276 | Berpizza | data structures implementation | Statement | C | 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} | PROGRAMMING | Tutorial (PDF) | ||
| 9109 | Waste Sorting | flows greedy implementation | Statement | N | 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} | PROGRAMMING | Tutorial (PDF) | ||
| 573 | Plane Tiling | implementation math | Statement | I | 2020-2021 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules) {1468} | PROGRAMMING | Tutorial (PDF) | ||
| 11655 | 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 | ||
| 19919 | Strange List | brute force greedy implementation math | Statement | B | Codeforces Round 694 (Div. 2) {1471} | PROGRAMMING | 750.0 | Codeforces Round #694 Editorial | |
| 10933 | Program | data structures dp implementation | Statement | D | Educational Codeforces Round 102 (Rated for Div. 2) {1473} | PROGRAMMING | Educational Codeforces Round 102 Editorial | ||
| 4690 | Minimum Path | dp graphs implementation shortest paths | Statement | E | Educational Codeforces Round 102 (Rated for Div. 2) {1473} | PROGRAMMING | Educational Codeforces Round 102 Editorial | ||
| 37276 | Replacing Elements | greedy implementation sortings | Statement | A | Educational Codeforces Round 102 (Rated for Div. 2) {1473} | PROGRAMMING | Educational Codeforces Round 102 Editorial | ||
| 14107 | Array Destruction | constructive algorithms data structures greedy implementation sortings | Statement | C | Codeforces Round 696 (Div. 2) {1474} | PROGRAMMING | 1500.0 | Codeforces Round #696 Editorial | |
| 4297 | Cleaning | data structures dp greedy implementation | Statement | D | Codeforces Round 696 (Div. 2) {1474} | PROGRAMMING | 2000.0 | Codeforces Round #696 Editorial | |
| 17561 | Advertising Agency | combinatorics implementation math sortings | Statement | E | Codeforces Round 697 (Div. 3) {1475} | PROGRAMMING | Codeforces Round #697 (Div. 3) Editorial | ||
| 9221 | Journey | dfs and similar dp dsu implementation two pointers | Statement | D | Educational Codeforces Round 103 (Rated for Div. 2) {1476} | PROGRAMMING | 87356 | ||
| 10616 | Nezzar and Symmetric Array | constructive algorithms implementation math sortings | Statement | C | Codeforces Round 698 (Div. 2) {1478} | PROGRAMMING | 1500.0 | Tutorial | 1700 |
| 7462 | Painting the Array I | constructive algorithms data structures dp greedy implementation | Statement | B1 | Codeforces Round 700 (Div. 1) {1479} | PROGRAMMING | 750.0 | Editorial of Codeforces Round #700 | |
| 4425 | Painting the Array II | data structures dp greedy implementation | Statement | B2 | Codeforces Round 700 (Div. 1) {1479} | PROGRAMMING | 750.0 | Editorial of Codeforces Round #700 | |
| 17921 | The Great Hero | greedy implementation | Statement | B | Codeforces Round 700 (Div. 2) {1480} | PROGRAMMING | 1000.0 | Editorial of Codeforces Round #700 | |
| 12390 | Fence Painting | brute force constructive algorithms greedy implementation | Statement | C | Codeforces Round 699 (Div. 2) {1481} | PROGRAMMING | 1500.0 | Codeforces Round #699 (Div. 2) Editorial | |
| 19898 | New Colony | brute force greedy implementation | Statement | B | Codeforces Round 699 (Div. 2) {1481} | PROGRAMMING | 750.0 | Codeforces Round #699 (Div. 2) Editorial | |
| 4847 | AB Graph | constructive algorithms graphs greedy implementation strings | Statement | D | Codeforces Round 699 (Div. 2) {1481} | PROGRAMMING | 2000.0 | Codeforces Round #699 (Div. 2) Editorial | |
| 25725 | Space Navigation | greedy implementation strings | Statement | A | Codeforces Round 699 (Div. 2) {1481} | PROGRAMMING | 500.0 | Codeforces Round #699 (Div. 2) Editorial | |
| 4110 | Playlist | data structures dsu implementation | Statement | D | Технокубок 2021 - Финал {1482} | PROGRAMMING | 2000.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 9590 | Restore Modulo | implementation math | Statement | B | Технокубок 2021 - Финал {1482} | PROGRAMMING | 1250.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 3852 | Basic Diplomacy | constructive algorithms flows greedy implementation | Statement | A | Codeforces Round 709 (Div. 1, based on Technocup 2021 Final Round) {1483} | PROGRAMMING | 500.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 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 | |
| 4125 | Restore Modulo | implementation math | Statement | B | Codeforces Round 709 (Div. 2, based on Technocup 2021 Final Round) {1484} | PROGRAMMING | 1250.0 | Technocup 2021: Final Round and Codeforces Round #709 — tutorial | |
| 17896 | Replace and Keep Sorted | dp implementation math | Statement | B | Codeforces Round 701 (Div. 2) {1485} | PROGRAMMING | 1000.0 | Editorial of Codeforces Round #701 (Div. 2) | 1200 |
| 27032 | Shifting Stacks | greedy implementation | Statement | A | Codeforces Round 703 (Div. 2) {1486} | PROGRAMMING | 500.0 | Codeforces Round #703 (Div. 2) Editorial | |
| 15386 | Minimum Ties | brute force constructive algorithms dfs and similar graphs greedy implementation math | Statement | C | Educational Codeforces Round 104 (Rated for Div. 2) {1487} | PROGRAMMING | 87873 | ||
| 5113 | Cheap Dinner | data structures dp implementation sortings two pointers | Statement | E | Educational Codeforces Round 104 (Rated for Div. 2) {1487} | PROGRAMMING | 87873 | ||
| 27490 | Arena | implementation sortings | Statement | A | Educational Codeforces Round 104 (Rated for Div. 2) {1487} | PROGRAMMING | 87873 | ||
| 21625 | Permutation Transformation | dfs and similar divide and conquer implementation | Statement | D | Codeforces Round 702 (Div. 3) {1490} | PROGRAMMING | Codeforces Round #702 (Div. 3) Editorial | ||
| 8386 | Pekora and Trampoline | brute force data structures dp graphs greedy implementation | Statement | C | Codeforces Global Round 13 {1491} | PROGRAMMING | 1000.0 | Codeforces Global Round 13 Editorial | |
| 18994 | K-th Largest Value | brute force greedy implementation | Statement | A | Codeforces Global Round 13 {1491} | PROGRAMMING | 500.0 | Codeforces Global Round 13 Editorial | |
| 14222 | Minimal Cost | brute force greedy implementation math | Statement | B | Codeforces Global Round 13 {1491} | PROGRAMMING | 750.0 | Codeforces Global Round 13 Editorial | |
| 1288 | Almost Fault-Tolerant Database | brute force constructive algorithms dfs and similar greedy implementation | Statement | E | Codeforces Round 704 (Div. 2) {1492} | PROGRAMMING | 3000.0 | Codeforces Round #704 Editorial | |
| 4941 | K-beautiful Strings | binary search brute force greedy implementation strings | Statement | C | Codeforces Round 705 (Div. 2) {1493} | PROGRAMMING | 1750.0 | Codeforces Round #705 (Div.2) Editorial | |
| 12562 | Planet Lapituletti | brute force implementation | Statement | B | Codeforces Round 705 (Div. 2) {1493} | PROGRAMMING | 1250.0 | Codeforces Round #705 (Div.2) Editorial | |
| 15296 | Berland Crossword | binary search bitmasks brute force greedy implementation | Statement | B | Educational Codeforces Round 105 (Rated for Div. 2) {1494} | PROGRAMMING | Educational Codeforces Round 105 Editorial | ||
| 5719 | 1D Sokoban | binary search implementation two pointers | Statement | C | Educational Codeforces Round 105 (Rated for Div. 2) {1494} | PROGRAMMING | Educational Codeforces Round 105 Editorial | ||
| 22786 | ABC String | bitmasks brute force implementation | Statement | A | Educational Codeforces Round 105 (Rated for Div. 2) {1494} | PROGRAMMING | Educational Codeforces Round 105 Editorial | ||
| 2814 | Dogeforces | brute force constructive algorithms divide and conquer dsu greedy implementation trees | Statement | D | Educational Codeforces Round 105 (Rated for Div. 2) {1494} | PROGRAMMING | Educational Codeforces Round 105 Editorial | ||
| 538 | Qingshan and Daniel | brute force data structures greedy implementation | Statement | E | Codeforces Round 706 (Div. 1) {1495} | PROGRAMMING | 2500.0 | Codeforces Round #706 Editorial | |
| 6327 | Let's Go Hiking | constructive algorithms games greedy implementation | Statement | B | Codeforces Round 706 (Div. 1) {1495} | PROGRAMMING | 1000.0 | Codeforces Round #706 Editorial | |
| 18262 | Max and Mex | implementation math | Statement | B | Codeforces Round 706 (Div. 2) {1496} | PROGRAMMING | 1000.0 | Codeforces Round #706 Editorial | |
| 21983 | Binary Removals | brute force dp greedy implementation | Statement | B | Educational Codeforces Round 106 (Rated for Div. 2) {1499} | PROGRAMMING | Educational Codeforces Round 106 Editorial | ||
| 9480 | Going Home | brute force implementation math | Statement | A | Codeforces Round 707 (Div. 1, based on Moscow Open Olympiad in Informatics) {1500} | PROGRAMMING | 750.0 | Codeforces Round #707 Editorial | 1800 |
| 12195 | Alexey and Train | implementation | Statement | A | Codeforces Round 707 (Div. 2, based on Moscow Open Olympiad in Informatics) {1501} | PROGRAMMING | 500.0 | Codeforces Round #707 Editorial | 800 |
| 21027 | Napoleon Cake | dp implementation sortings | Statement | B | Codeforces Round 707 (Div. 2, based on Moscow Open Olympiad in Informatics) {1501} | PROGRAMMING | 1000.0 | Codeforces Round #707 Editorial | 900 |
| 215 | Balance the Cards | constructive algorithms data structures divide and conquer geometry graphs implementation | Statement | F | Codeforces Round 712 (Div. 1) {1503} | PROGRAMMING | 4000.0 | T | 3500 |
| 25540 | Flip the Bits | constructive algorithms greedy implementation math | Statement | B | Codeforces Round 712 (Div. 2) {1504} | PROGRAMMING | 1000.0 | Codeforces Round #712 Editorial | 1200 |
| 1921 | Cakewalk | constructive algorithms greedy implementation shortest paths | Statement | E | April Fools Day Contest 2021 {1505} | PROGRAMMING | tutorial | ||
| 6514 | DMCA | constructive algorithms implementation | Statement | B | April Fools Day Contest 2021 {1505} | PROGRAMMING | tutorial | ||
| 6701 | Fibonacci Words | constructive algorithms implementation | Statement | C | April Fools Day Contest 2021 {1505} | PROGRAMMING | tutorial | ||
| 16051 | Is it rated - 2 | implementation interactive | Statement | A | April Fools Day Contest 2021 {1505} | PROGRAMMING | tutorial | ||
| 21111 | Partial Replacement | greedy implementation | Statement | B | Codeforces Round 710 (Div. 3) {1506} | PROGRAMMING | Editorial | ||
| 4414 | Almost Sorted | binary search bitmasks combinatorics constructive algorithms dp implementation math | Statement | B | Codeforces Round 715 (Div. 1) {1508} | PROGRAMMING | 1000.0 | Codeforces Round #715 Editorial | |
| 6662 | Binary Literature | constructive algorithms greedy implementation math strings two pointers | Statement | A | Codeforces Round 715 (Div. 1) {1508} | PROGRAMMING | 750.0 | Codeforces Round #715 Editorial | |
| 5964 | King's Task | brute force graphs implementation | Statement | K | 2020-2021 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred) {1510} | PROGRAMMING | nerc-2020-offline-tutorial.pdf | ||
| 32589 | Yet Another Card Deck | brute force data structures implementation trees | Statement | C | Educational Codeforces Round 107 (Rated for Div. 2) {1511} | PROGRAMMING | 89634 | ||
| 6802 | Education | binary search greedy implementation math | Statement | F | Codeforces Round 713 (Div. 3) {1512} | PROGRAMMING | Codeforces Round #713 (Div. 3) Editorial | ||
| 79579 | Spy Detected! | brute force implementation | Statement | A | Codeforces Round 713 (Div. 3) {1512} | PROGRAMMING | Codeforces Round #713 (Div. 3) Editorial | ||
| 21676 | A-B Palindrome | constructive algorithms implementation strings | Statement | C | Codeforces Round 713 (Div. 3) {1512} | PROGRAMMING | Codeforces Round #713 (Div. 3) Editorial | ||
| 26505 | Almost Rectangle | implementation | Statement | B | Codeforces Round 713 (Div. 3) {1512} | PROGRAMMING | Codeforces Round #713 (Div. 3) Editorial | ||
| 6451 | GCD and MST | constructive algorithms data structures dsu graphs implementation number theory sortings | Statement | D | Divide by Zero 2021 and Codeforces Round 714 (Div. 2) {1513} | PROGRAMMING | 2000.0 | Divide by Zero 2021 and Codeforces Round #714 (Div. 2) Editorial | |
| 20008 | Array and Peaks | constructive algorithms implementation | Statement | A | Divide by Zero 2021 and Codeforces Round 714 (Div. 2) {1513} | PROGRAMMING | 500.0 | Divide by Zero 2021 and Codeforces Round #714 (Div. 2) Editorial | |
| 1031 | 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 | |
| 14160 | 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 | |
| 17530 | Maximum Sum of Products | brute force dp implementation math ternary search two pointers | Statement | D | Educational Codeforces Round 108 (Rated for Div. 2) {1519} | PROGRAMMING | Educational Codeforces Round 108 Editorial | ||
| 58278 | Do Not Be Distracted! | brute force implementation | Statement | A | Codeforces Round 719 (Div. 3) {1520} | PROGRAMMING | Editorial |