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Introduction

A repository to keep track of problem solving practice, containing solutions from platforms:

  • Codeforces   Codeforces
  • AtCoder   AtCoder

Contents

# Title Solution Tags Submitted
561 I - Palindrome Pairs GNU C++17 (64) hashing strings *1600 Sep/16/2021 23:27
560 D2 - Seating Arrangements (hard version) GNU C++17 (64) data structures greedy implementation sortings two pointers *1600 Sep/12/2021 21:42
559 D1 - Seating Arrangements (easy version) GNU C++17 (64) data structures greedy sortings *1100 Sep/12/2021 20:55
558 C - MAX-MEX Cut GNU C++17 (64) bitmasks constructive algorithms dp greedy *1000 Sep/12/2021 20:36
557 B - MIN-MEX Cut GNU C++17 (64) bitmasks constructive algorithms dp greedy *800 Sep/12/2021 20:22
556 A - Median Maximization GNU C++17 (64) binary search greedy math *800 Sep/12/2021 20:15
555 D - Inconvenient Pairs GNU C++17 (64) binary search data structures implementation sortings two pointers Sep/09/2021 13:16
554 C - Jury Meeting GNU C++17 (64) combinatorics math Sep/08/2021 21:20
553 B - Chess Tournament GNU C++17 (64) constructive algorithms Sep/08/2021 20:19
552 A - Balanced Substring GNU C++17 (64) implementation Sep/08/2021 20:07
551 C - Compressed Bracket Sequence GNU C++17 (64) brute force implementation *1800 Aug/29/2021 22:18
550 D - Take a Guess GNU C++17 (64) bitmasks constructive algorithms interactive math *1800 Aug/29/2021 21:43
549 B - Take Your Places! GNU C++17 (64) implementation *1300 Aug/29/2021 20:30
548 A - A Variety of Operations GNU C++17 (64) math *800 Aug/29/2021 20:09
547 D1 - Two Hundred Twenty One (easy version) GNU C++17 (64) dp math Aug/26/2021 21:55
546 C - Rings GNU C++17 (64) constructive algorithms math Aug/26/2021 21:44
545 B - Scenes From a Memory GNU C++17 (64) brute force constructive algorithms implementation math number theory Aug/26/2021 20:36
544 A - The Miracle and the Sleeper GNU C++17 (64) greedy math Aug/26/2021 20:17
543 D1 - Up the Strip (simplified version) GNU C++17 (64) brute force data structures dp math number theory *1700 Aug/25/2021 12:24
542 D2 - Up the Strip GNU C++17 (64) brute force dp math number theory *1900 Aug/25/2021 12:24
541 F1 - Nearest Beautiful Number (easy version) GNU C++17 (64) binary search bitmasks brute force constructive algorithms dfs and similar greedy *1900 Aug/19/2021 13:24
540 F2 - Nearest Beautiful Number (hard version) GNU C++17 (64) bitmasks brute force constructive algorithms dfs and similar dp greedy *2100 Aug/19/2021 13:24
539 E - Polycarp and String Transformation GNU C++17 (64) binary search implementation sortings strings *1800 Aug/18/2021 21:20
538 D - Make a Power of Two GNU C++17 (64) greedy math strings *1300 Aug/18/2021 20:49
537 C - Infinity Table GNU C++17 (64) implementation math *800 Aug/18/2021 20:19
536 B - Who's Opposite? GNU C++17 (64) math *800 Aug/18/2021 20:12
535 A - Dislike of Threes GNU C++17 (64) implementation *800 Aug/18/2021 20:07
534 E - Mocha and Stars GNU C++17 (64) combinatorics dp fft math number theory *2200 Aug/17/2021 18:30
533 D1 - Mocha and Diana (Easy Version) GNU C++17 (64) brute force constructive algorithms dsu graphs greedy trees *1400 Aug/16/2021 16:31
532 D2 - Mocha and Diana (Hard Version) GNU C++17 (64) brute force constructive algorithms dfs and similar dsu graphs greedy trees two pointers *2500 Aug/16/2021 16:30
531 C - Mocha and Hiking GNU C++17 (64) constructive algorithms graphs *1200 Aug/15/2021 20:48
530 B - Mocha and Red and Blue GNU C++17 (64) dp greedy *900 Aug/15/2021 20:16
529 A - Mocha and Math GNU C++17 (64) bitmasks constructive algorithms math *900 Aug/15/2021 20:07
528 D - Sum of Maximum Weights C++ (GCC 9.2.1) AtCoder *400 Aug/14/2021 20:13
527 C - Distribution C++ (GCC 9.2.1) AtCoder *300 Aug/14/2021 17:40
526 B - How many? C++ (GCC 9.2.1) AtCoder *200 Aug/14/2021 17:33
525 A - New Generation ABC C++ (GCC 9.2.1) AtCoder *100 Aug/14/2021 17:31
524 D - Powerful array GNU C++17 (64) data structures implementation math two pointers *2200 Aug/14/2021 16:00
523 C - Sereja and Brackets GNU C++17 (64) data structures schedules *2000 Aug/14/2021 15:34
522 C - Longest Regular Bracket Sequence GNU C++17 (64) constructive algorithms data structures dp greedy sortings strings *1900 Aug/14/2021 13:27
521 D - Minimax Problem GNU C++17 (64) binary search bitmasks dp *2000 Aug/14/2021 00:18
520 C - Two Arrays GNU C++17 (64) combinatorics dp *1600 Aug/13/2021 23:52
519 B - Ciel and Flowers GNU C++17 (64) combinatorics math *1600 Aug/13/2021 23:49
518 C - Moamen and XOR GNU C++17 (64) bitmasks combinatorics dp math matrices *1700 Aug/12/2021 22:46
517 F - Removing Leaves GNU C++17 (64) data structures greedy implementation trees *2300 Aug/10/2021 22:06
516 B - Moamen and k-subarrays GNU C++17 (64) greedy sortings *1100 Aug/09/2021 20:26
515 A - Ezzat and Two Subsequences GNU C++17 (64) brute force math sortings *800 Aug/09/2021 20:14
514 C - Mikasa GNU C++17 (64) binary search bitmasks greedy implementation *1800 Aug/09/2021 19:27
513 F - Array Stabilization (GCD version) Kotlin binary search brute force data structures divide and conquer number theory two pointers *1900 Aug/02/2021 20:55
512 E - The Three Little Pigs GNU C++17 (64) combinatorics dp fft math *2500 Aug/02/2021 15:30
511 D - Integers Have Friends GNU C++17 (64) binary search data structures math two pointers *1800 Aug/01/2021 20:48
510 C - Web of Lies GNU C++17 (64) graphs greedy *1400 Aug/01/2021 20:29
509 B - Gregor and the Pawn Game GNU C++17 (64) dfs and similar dp flows graph matchings graphs greedy implementation *800 Aug/01/2021 20:15
508 A - Gregor and Cryptography GNU C++17 (64) math number theory *800 Aug/01/2021 20:07
507 F - Good Graph GNU C++17 (64) data structures dsu graphs trees *2700 Aug/01/2021 19:39
506 D - Querying Multiset C++ (GCC 9.2.1) AtCoder *400 Jul/31/2021 20:40
505 D - Say No to Palindromes PyPy 3 brute force constructive algorithms dp strings *1600 Jul/31/2021 01:39
504 E - Boring Segments GNU C++17 (64) data structures sortings trees two pointers *2100 Jul/31/2021 00:32
503 C - Coin Rows GNU C++17 (64) brute force constructive algorithms dp implementation *1300 Jul/30/2021 21:11
502 B - Two Tables GNU C++17 (64) brute force *1300 Jul/30/2021 20:55
501 A - PizzaForces GNU C++17 (64) brute force math *900 Jul/30/2021 20:36
500 D - Diane GNU C++17 (64) constructive algorithms greedy strings *1800 Jul/30/2021 19:22
499 B - Cobb GNU C++17 (64) bitmasks brute force greedy math *1700 Jul/29/2021 23:09
498 A - Cherry GNU C++17 (64) greedy *800 Jul/29/2021 20:08
497 F - Telepanting GNU C++17 (64) binary search data structures dp sortings *2200 Jul/27/2021 14:02
496 D - Number of Shortest paths C++ (GCC 9.2.1) AtCoder *400 Jul/25/2021 13:02
495 D2 - Domino (hard version) GNU C++17 (64) constructive algorithms implementation math *2100 Jul/23/2021 21:44
494 D1 - Domino (easy version) GNU C++17 (64) constructive algorithms math *1700 Jul/23/2021 20:55
493 C - Interesting Story GNU C++17 (64) greedy sortings strings *1500 Jul/23/2021 20:45
492 B2 - Wonderful Coloring - 2 GNU C++17 (64) binary search constructive algorithms data structures greedy *1400 Jul/23/2021 20:34
491 B1 - Wonderful Coloring - 1 GNU C++17 (64) greedy strings *800 Jul/23/2021 20:16
490 A - Polycarp and Coins GNU C++17 (64) greedy math *800 Jul/23/2021 20:08
489 F - Pairwise Modulo GNU C++17 (64) data structures math number theory *2300 Jul/23/2021 02:39
488 E - Permutation Shift GNU C++17 (64) brute force combinatorics constructive algorithms dfs and similar dsu graphs math *2100 Jul/23/2021 01:23
487 D - Backspace GNU C++17 (64) greedy strings two pointers *1500 Jul/22/2021 21:03
486 C - Penalty GNU C++17 (64) brute force dp greedy *1200 Jul/22/2021 20:46
485 B - Reverse String GNU C++17 (64) brute force dp hashing strings *1300 Jul/22/2021 20:35
484 A - Digits Sum GNU C++17 (64) math number theory *800 Jul/22/2021 20:08
483 E - Stringforces GNU C++17 binary search bitmasks brute force dp strings two pointers *2500 Jul/16/2021 23:07
482 C - AquaMoon and Strange Sort GNU C++17 (64) sortings *1500 Jul/15/2021 12:25
481 B - AquaMoon and Stolen String GNU C++17 (64) interactive math *1200 Jul/15/2021 02:35
480 A - AquaMoon and Two Arrays GNU C++17 (64) brute force greedy *800 Jul/15/2021 02:23
479 C - Manhattan Subarrays GNU C++17 (64) brute force geometry greedy implementation *1700 Jul/14/2021 22:08
478 B - Maximum Cost Deletion GNU C++17 (64) greedy math *1000 Jul/14/2021 20:21
477 A - Find The Array GNU C++17 (64) greedy math *800 Jul/14/2021 20:13
476 G - How Many Paths? Kotlin dfs and similar dp graphs trees *2100 Jul/13/2021 02:24
475 E - Air Conditioners GNU C++17 (64) data structures dp implementation shortest paths sortings two pointers *1500 Jul/10/2021 21:40
474 D - Co-growing Sequence GNU C++17 (64) bitmasks constructive algorithms greedy *1300 Jul/10/2021 21:03
473 C - Pair Programming GNU C++17 (64) greedy two pointers *1100 Jul/10/2021 20:45
472 B - Alphabetical Strings GNU C++17 (64) greedy implementation strings *800 Jul/10/2021 20:36
471 A - Shortest Path with Obstacle GNU C++17 (64) implementation math *800 Jul/10/2021 20:32
470 D - Collision C++ (GCC 9.2.1) AtCoder *400 Jul/10/2021 17:51
469 C - Not Equal C++ (GCC 9.2.1) AtCoder *300 Jul/10/2021 17:47
468 B - Can you buy them all? C++ (GCC 9.2.1) AtCoder *200 Jul/10/2021 17:33
467 A - Counting C++ (GCC 9.2.1) AtCoder *100 Jul/10/2021 17:31
466 F - The Sum of the k-th Powers GNU C++17 (64) math *2600 Jul/10/2021 17:06
465 D1 - RPD and Rap Sheet (Easy Version) Kotlin bitmasks constructive algorithms interactive math *1700 Jul/08/2021 23:19
464 D2 - RPD and Rap Sheet (Hard Version) Kotlin brute force constructive algorithms interactive math *2200 Jul/08/2021 23:18
463 C - Need for Pink Slips GNU C++17 (64) bitmasks brute force dfs and similar implementation math probabilities *1900 Jul/07/2021 21:36
462 B - Customising the Track GNU C++17 (64) combinatorics greedy math *900 Jul/07/2021 20:14
461 A - Exciting Bets GNU C++17 (64) greedy math number theory *900 Jul/07/2021 20:09
460 D - Shortest Path Queries 2 C++ (GCC 9.2.1) AtCoder *400 Jul/04/2021 18:10
459 C - Fair Candy Distribution C++ (GCC 9.2.1) AtCoder *300 Jul/04/2021 17:47
458 B - Factorial Yen Coin C++ (GCC 9.2.1) AtCoder *200 Jul/04/2021 17:41
457 A - Rolling Dice C++ (GCC 9.2.1) AtCoder *100 Jul/04/2021 17:38
456 C - Strange Function Kotlin math number theory *1600 Jul/04/2021 00:21
455 B - Plus and Multiply Kotlin constructive algorithms math number theory *1500 Jul/03/2021 23:23
454 A - Odd Set GNU C++17 (64) math *800 Jul/03/2021 18:36
453 C - Tree Diameter Kotlin bitmasks graphs interactive *1700 Jul/02/2021 01:50
452 F - Three Paths on a Tree GNU C++17 (64) dfs and similar dp greedy trees *2000 Jul/01/2021 23:59
451 C - Product of Three Numbers Kotlin greedy math number theory *1300 Jul/01/2021 23:27
450 F - Binary String Partition Kotlin *special problem binary search greedy Jun/30/2021 00:56
449 E - Chess Team Forming Kotlin *special problem binary search data structures greedy Jun/29/2021 21:25
448 D - String Searching Kotlin *special problem hashing Jun/29/2021 20:50
447 C - Sweets Kotlin *special problem data structures implementation Jun/29/2021 20:31
446 B - Nearest Point Function Kotlin *special problem implementation Jun/29/2021 20:13
445 A - Travel to Bertown Kotlin *special problem implementation math Jun/29/2021 20:09
444 C - Many Segments C++ (GCC 9.2.1) AtCoder *300 Jun/26/2021 23:38
443 D - Tree Array GNU C++17 (64) combinatorics dp graphs math probabilities trees *2300 Jun/26/2021 11:25
442 C - Great Graphs GNU C++17 (64) constructive algorithms graphs greedy shortest paths sortings *1400 Jun/25/2021 21:58
441 B - Pleasant Pairs GNU C++17 (64) brute force implementation math number theory Jun/25/2021 21:37
440 A - Pretty Permutations GNU C++17 (64) constructive algorithms greedy implementation Jun/25/2021 21:09
439 D - PriceFixed GNU C++17 (64) binary search greedy implementation sortings two pointers *1600 Jun/25/2021 20:25
438 A - LCM Challenge Kotlin number theory *1600 Jun/25/2021 01:58
437 E2 - Erase and Extend (Hard Version) GNU C++17 (64) binary search data structures greedy hashing string suffix structures strings two pointers *2200 Jun/25/2021 00:11
436 F - Figure Fixing Kotlin constructive algorithms dfs and similar dsu graphs greedy math *2200 Jun/24/2021 20:35
435 C - Prefixes and Suffixes Kotlin strings *1700 Jun/23/2021 00:32
434 F - Prefixes and Suffixes Kotlin *special problem strings Jun/22/2021 21:51
433 E - Good Array Kotlin *special problem Jun/22/2021 20:45
432 C - Good Array GNU C++17 (64) *1300 Jun/22/2021 20:41
431 D - Teams Forming Kotlin *special problem sortings Jun/22/2021 20:22
430 C - Uniform String Kotlin *special problem implementation Jun/22/2021 20:16
429 B - Frog Jumping Kotlin *special problem math Jun/22/2021 20:05
428 A - A+B (Trial Problem) Kotlin *special problem Jun/22/2021 19:54
427 C - Stable Groups GNU C++17 (64) greedy sortings *1200 Jun/22/2021 00:31
426 A - Contest Start GNU C++17 (64) combinatorics geometry greedy math *1000 Jun/22/2021 00:08
425 B - Love Song GNU C++17 (64) dp implementation strings *800 Jun/21/2021 23:48
424 D - Deleting Divisors GNU C++17 (64) games math number theory *1700 Jun/19/2021 01:31
423 E1 - Erase and Extend (Easy Version) GNU C++17 (64) binary search brute force dp greedy hashing implementation string suffix structures strings two pointers *1600 Jun/18/2021 23:48
422 C - Challenging Cliffs GNU C++17 (64) constructive algorithms greedy implementation math *1200 Jun/18/2021 21:25
421 B - Bad Boy GNU C++17 (64) constructive algorithms greedy math *900 Jun/18/2021 20:30
420 A - Arithmetic Array GNU C++17 (64) greedy math *800 Jun/18/2021 20:13
419 F1 - Falling Sand (Easy Version) GNU C++17 (64) dfs and similar graphs greedy Jun/17/2021 00:48
418 C - Little Alawn's Puzzle Python 3 combinatorics dp dsu graphs math Jun/14/2021 23:49
417 E - Lost Array GNU C++17 (64) constructive algorithms dp graphs greedy implementation interactive shortest paths Jun/14/2021 23:09
416 D - Lost Tree GNU C++17 (64) constructive algorithms interactive trees Jun/14/2021 01:44
415 B - Histogram Ugliness GNU C++17 (64) greedy implementation math Jun/13/2021 21:41
414 A - Colour the Flag GNU C++17 (64) brute force implementation Jun/13/2021 21:10
413 E - Funny Substrings GNU C++17 (64) data structures hashing implementation matrices strings Jun/11/2021 11:11
412 G - Gift Set GNU C++17 (64) binary search greedy math ternary search Jun/10/2021 23:50
411 F - Interesting Function GNU C++17 (64) binary search dp math number theory Jun/10/2021 21:26
410 D - Another Problem About Dividing Numbers GNU C++17 (64) constructive algorithms math number theory Jun/10/2021 21:19
409 C - Number of Pairs GNU C++17 (64) binary search data structures math two pointers Jun/10/2021 20:33
408 B - Friends and Candies GNU C++17 (64) greedy math Jun/10/2021 20:13
407 A - Stone Game GNU C++17 (64) brute force dp greedy Jun/10/2021 20:09
406 E - Gold Transfer GNU C++17 (64) binary search data structures dp greedy interactive trees Jun/05/2021 21:36
405 D - Playoff Tournament GNU C++17 (64) data structures dfs and similar dp implementation trees Jun/04/2021 22:25
404 C - Unstable String GNU C++17 (64) binary search dp greedy implementation strings two pointers Jun/04/2021 20:47
403 B - Array Reodering GNU C++17 (64) brute force greedy math number theory sortings Jun/04/2021 20:16
402 A - Fair Playoff GNU C++17 (64) brute force implementation Jun/04/2021 20:10
401 B - Just Eat It! GNU C++17 (64) dp greedy implementation *1300 Jun/04/2021 02:37
400 A - Mezo Playing Zoma GNU C++17 (64) math *800 Jun/04/2021 02:21
399 C - Fadi and LCM GNU C++17 (64) brute force math number theory *1400 Jun/04/2021 02:15
398 C - XOR and OR GNU C++17 (64) constructive algorithms implementation math *1500 Jun/04/2021 02:01
397 B2 - Мониторинг GNU C++17 (64) *special problem Jun/03/2021 01:15
396 B1 - Мониторинг GNU C++17 (64) *special problem *special problem Jun/03/2021 01:14
395 A - Singer color GNU C++17 (64) *special problem Jun/03/2021 01:05
394 E - Compatible Numbers GNU C++17 (64) bitmasks brute force dfs and similar dp *2200 Jun/01/2021 13:13
393 D - Love-Hate GNU C++17 (64) bitmasks brute force dp probabilities *2400 Jun/01/2021 01:57
392 E - Crypto Lights GNU C++17 (64) combinatorics *2600 May/30/2021 23:32
391 C - Compression and Expansion GNU C++17 (64) brute force data structures implementation trees *1600 May/30/2021 20:58
390 B - Lord of the Values GNU C++17 (64) constructive algorithms *1100 May/30/2021 20:28
389 A - Game of Life GNU C++17 (64) implementation *800 May/30/2021 20:17
388 C2 - Potions (Hard Version) GNU C++17 (64) data structures greedy *1600 May/29/2021 18:37
387 C1 - Potions (Easy Version) GNU C++17 (64) brute force data structures dp greedy *1500 May/29/2021 18:15
386 B - I Hate 1111 GNU C++17 (64) dp math number theory *1400 May/29/2021 03:19
385 A - Mean Inequality GNU C++17 (64) constructive algorithms sortings *800 May/28/2021 19:44
384 A - DIY Wooden Ladder GNU C++17 (64) greedy math sortings *900 May/28/2021 00:47
383 B - Pillars GNU C++17 (64) greedy implementation *1000 May/28/2021 00:41
382 C - Array Splitting GNU C++17 (64) greedy sortings *1400 May/28/2021 00:17
381 D - Ilya and Escalator GNU C++17 (64) combinatorics dp math probabilities *1700 May/26/2021 22:44
380 C - Wet Shark and Flowers GNU C++17 (64) combinatorics math number theory probabilities *1700 May/26/2021 20:16
379 E - Monotonic Renumeration GNU C++17 (64) combinatorics sortings *1700 May/26/2021 19:54
378 C - Journey GNU C++17 (64) dfs and similar dp graphs probabilities trees *1500 May/26/2021 18:59
377 A - Toy Cars GNU C++17 (64) implementation *900 May/25/2021 00:39
376 B - Equidistant String GNU C++17 (64) greedy *1100 May/25/2021 00:33
375 C - Woodcutters GNU C++17 (64) dp greedy *1500 May/25/2021 00:28
374 D - Queue GNU C++17 (64) greedy implementation sortings *1300 May/25/2021 00:10
373 C - Parsa's Humongous Tree GNU C++17 (64) dp trees May/24/2021 23:25
372 D - Kavi on Pairing Duty GNU C++17 (64) dp May/24/2021 23:13
371 E - Paths and Trees GNU C++17 (64) graphs greedy shortest paths *2000 May/24/2021 22:41
370 B - Sifid and Strange Subsequences GNU C++17 (64) greedy May/24/2021 20:46
369 A - Eshag Loves Big Arrays GNU C++17 (64) constructive algorithms greedy May/24/2021 20:07
368 D - Returning Home GNU C++17 (64) graphs shortest paths sortings *2300 May/24/2021 13:22
367 E - Partition Game GNU C++17 (64) binary search data structures divide and conquer dp *2500 May/23/2021 13:53
366 E - Count Descendants C++ (GCC 9.2.1) AtCoder *500 May/22/2021 21:53
365 D - MEX Tree GNU C++17 (64) combinatorics dfs and similar implementation math trees *2400 May/22/2021 21:18
364 C - Sequence Pair Weight Rust hashing implementation math *1600 May/22/2021 01:45
363 A - And Then There Were K Rust bitmasks *800 May/22/2021 01:20
362 B2 - Palindrome Game (hard version) GNU C++17 (64) constructive algorithms games *1900 May/20/2021 23:03
361 B1 - Palindrome Game (easy version) GNU C++17 (64) constructive algorithms games *1200 May/20/2021 23:03
360 E - Colorings and Dominoes GNU C++17 (64) combinatorics dp greedy math *2100 May/19/2021 19:20
359 E1 - Weights Division (easy version) GNU C++17 (64) data structures dfs and similar greedy trees *2000 May/19/2021 12:57
358 E2 - Weights Division (hard version) GNU C++17 (64) binary search dfs and similar greedy sortings trees two pointers *2200 May/19/2021 12:56
357 A - Circle Coloring GNU C++17 (64) constructive algorithms *800 May/19/2021 00:00
356 F - Number of Subsequences GNU C++17 (64) combinatorics dp strings *2000 May/18/2021 23:53
355 F - Copy or Prefix Sum GNU C++17 (64) combinatorics data structures dp sortings *2400 May/18/2021 22:42
354 D - Multiples and Power Differences GNU C++17 (64) constructive algorithms graphs math number theory *2200 May/18/2021 14:29
353 E - Off by One GNU C++17 (64) constructive algorithms dfs and similar geometry graphs sortings trees *2700 May/18/2021 13:03
352 D - Armchairs GNU C++17 (64) dp flows graph matchings greedy *1800 May/16/2021 21:05
351 B - Permutation Sort GNU C++17 (64) constructive algorithms greedy *900 May/16/2021 20:08
350 A - Potion-making GNU C++17 (64) math number theory *800 May/16/2021 19:57
349 C - Chef Monocarp GNU C++17 (64) dp flows graph matchings greedy math sortings *1800 May/16/2021 00:28
348 D - Jongmah GNU C++17 (64) dp *2200 May/15/2021 23:09
347 E - Xor Distances C++ (GCC 9.2.1) AtCoder *500 May/15/2021 21:26
346 C - Secret Number C++ (GCC 9.2.1) AtCoder *300 May/15/2021 17:52
345 B - Do you know the second highest mountain? C++ (GCC 9.2.1) AtCoder *200 May/15/2021 17:33
344 A - Tiny Arithmetic Sequence C++ (GCC 9.2.1) AtCoder *100 May/15/2021 17:31
343 C - Floor and Mod GNU C++17 (64) binary search brute force math number theory *1700 May/15/2021 15:37
342 B - Replace and Keep Sorted GNU C++17 (64) dp implementation math *1200 May/15/2021 14:51
341 A - Add and Divide GNU C++17 (64) brute force greedy math number theory *1000 May/15/2021 14:26
340 D - Catching Cheaters GNU C++17 (64) dp greedy strings *1800 May/12/2021 22:53
339 B - Catching Cheaters GNU C++17 (64) dp strings *1800 May/12/2021 22:02
338 D - Used Markers Kotlin *special problem greedy *1500 May/12/2021 12:19
337 B - Binary Number GNU C++17 (64) greedy *1300 May/12/2021 02:03
336 A - Strange Birthday Party GNU C++17 (64) binary search dp greedy sortings two pointers *1300 May/12/2021 01:45
335 B - Minimal Cost GNU C++17 (64) brute force math *1200 May/12/2021 01:28
334 D - Gargari and Permutations GNU C++17 (64) dfs and similar dp graphs implementation *1900 May/11/2021 01:47
333 A - Alternating Sum GNU C++17 (64) math number theory *1800 May/10/2021 21:46
332 D - Phoenix and Socks GNU C++17 (64) greedy sortings two pointers *1500 May/10/2021 12:43
331 B - Hills And Valleys GNU C++17 (64) brute force implementation *1700 May/10/2021 01:53
330 A - Gravity Flip GNU C++17 (64) greedy implementation sortings *900 May/09/2021 00:36
329 D - Nastia Plays with a Tree GNU C++17 (64) constructive algorithms data structures dfs and similar dp dsu greedy implementation trees *2500 May/08/2021 18:41
328 C - Nastia and a Hidden Permutation GNU C++17 (64) constructive algorithms interactive *2000 May/08/2021 00:05
327 B - Nastia and a Good Array GNU C++17 (64) constructive algorithms math number theory *1300 May/07/2021 20:49
326 A - Nastia and Nearly Good Numbers GNU C++17 (64) constructive algorithms math number theory *1000 May/07/2021 20:09
325 G - To Go Or Not To Go? GNU C++17 (64) brute force dfs and similar graphs greedy implementation shortest paths *2200 May/06/2021 21:53
324 F2 - Spanning Tree with One Fixed Degree GNU C++17 (64) constructive algorithms dfs and similar dsu graphs greedy *1900 May/06/2021 19:35
323 F - Substring 2 C++ (GCC 9.2.1) AtCoder *600 May/06/2021 14:36
322 F2 - Guess the K-th Zero (Hard version) GNU C++17 (64) binary search constructive algorithms data structures interactive *2200 May/05/2021 21:44
321 F1 - Guess the K-th Zero (Easy version) GNU C++17 (64) binary search interactive *1600 May/05/2021 21:05
320 E - Arranging The Sheep GNU C++17 (64) greedy math *1400 May/05/2021 20:42
319 C - Not Adjacent Matrix GNU C++17 (64) constructive algorithms *1000 May/05/2021 20:32
318 D - Same Differences GNU C++17 (64) data structures hashing math *1200 May/05/2021 20:21
317 B - Ordinary Numbers GNU C++17 (64) brute force math number theory *800 May/05/2021 20:10
316 A - Do Not Be Distracted! GNU C++17 (64) brute force implementation *800 May/05/2021 20:07
315 D - Water Tree GNU C++17 (64) data structures dfs and similar graphs trees *2100 May/05/2021 00:25
314 B - Mahmoud and Ehab and the bipartiteness GNU C++17 (64) dfs and similar graphs trees *1300 May/05/2021 00:07
313 B - Phoenix and Puzzle GNU C++17 (64) brute force geometry math number theory *1000 May/04/2021 20:47
312 A - Phoenix and Gold GNU C++17 (64) constructive algorithms greedy math *800 May/04/2021 20:19
311 C - Phoenix and Towers GNU C++17 (64) constructive algorithms data structures greedy *1400 May/04/2021 20:19
310 F - Unusual Matrix GNU C++17 (64) 2-sat brute force constructive algorithms *1900 May/04/2021 15:48
309 C - Going Home GNU C++17 (64) brute force implementation math *1800 May/04/2021 14:13
308 E - A and B and Lecture Rooms GNU C++17 (64) binary search data structures dfs and similar dp trees *2100 May/04/2021 01:15
307 B - Valuable Paper GNU C++17 (64) binary search flows graph matchings graphs *1900 May/03/2021 16:55
306 C - Timofey and a tree GNU C++17 (64) dfs and similar graphs implementation trees *1600 May/03/2021 12:55
305 C - MAD TEAM C++ (GCC 9.2.1) AtCoder *400 May/01/2021 20:18
304 E - Enemy is weak GNU C++17 (64) data structures trees *1900 May/01/2021 19:52
303 D - Pashmak and Parmida's problem GNU C++17 (64) data structures divide and conquer sortings *1800 May/01/2021 19:49
302 D - Maximum Sum of Products GNU C++17 (64) brute force dp implementation math two pointers *1600 Apr/30/2021 06:40
301 C - Berland Regional GNU C++17 (64) brute force data structures greedy number theory sortings *1400 Apr/29/2021 20:51
300 B - The Cake Is a Lie GNU C++17 (64) dp math *800 Apr/29/2021 20:37
299 A - Red and Blue Beans GNU C++17 (64) math *800 Apr/29/2021 20:12
298 C - The Sports Festival GNU C++17 (64) dp greedy *1800 Apr/29/2021 18:57
297 B - TMT Document GNU C++17 (64) greedy *1100 Apr/29/2021 14:29
296 A - Average Height GNU C++17 (64) constructive algorithms *800 Apr/29/2021 13:47
295 B - Polycarp and the Language of Gods Kotlin *special problem implementation two pointers *1400 Apr/29/2021 01:42
294 A - Selling Hamburgers Kotlin *special problem *800 Apr/29/2021 01:37
293 A - Prime Permutation GNU C++17 (64) implementation number theory strings *1300 Apr/28/2021 00:37
292 B - Squares GNU C++17 (64) math *1800 Apr/28/2021 00:19
291 C - Baby Ehab Partitions Again GNU C++17 (64) bitmasks constructive algorithms dp math *1700 Apr/27/2021 21:52
290 C - White Sheet GNU C++17 (64) geometry math *1700 Apr/27/2021 20:41
289 D - Swords GNU C++17 (64) math *1300 Apr/27/2021 20:22
288 B - Shooting GNU C++17 (64) greedy implementation sortings *900 Apr/27/2021 20:06
287 A - Prefixes GNU C++17 (64) strings *800 Apr/27/2021 20:01
286 D - Bicolored RBS GNU C++17 (64) constructive algorithms greedy *1500 Apr/27/2021 10:19
285 C - News Distribution Kotlin dfs and similar dsu graphs *1400 Apr/26/2021 21:46
284 B - Lost Numbers Kotlin brute force divide and conquer interactive math *1400 Apr/26/2021 21:04
283 A - Telephone Number Kotlin brute force greedy strings *800 Apr/26/2021 20:34
282 E - Tree Queries GNU C++17 (64) dfs and similar graphs trees *1900 Apr/25/2021 00:30
281 B - RBS Deletion Kotlin *special problem greedy *1800 Apr/24/2021 12:54
280 B - AGAGA XOOORRR GNU C++17 (64) bitmasks brute force dp greedy *1500 Apr/21/2021 22:54
279 A - Tit for Tat GNU C++17 (64) greedy *800 Apr/21/2021 19:09
278 D - Cut and Stick GNU C++17 (64) binary search data structures greedy implementation sortings *2000 Apr/21/2021 11:55
277 I - Coins C++ (GCC 9.2.1) AtCoder *100 Apr/20/2021 15:36
276 H - Grid 1 C++ (GCC 9.2.1) AtCoder *100 Apr/20/2021 15:29
275 G - Longest Path C++ (GCC 9.2.1) AtCoder *100 Apr/20/2021 15:23
274 B - AND 0, Sum Big GNU C++17 (64) bitmasks combinatorics math *1200 Apr/19/2021 20:14
273 A - Thor GNU C++17 (64) brute force data structures implementation *1600 Apr/18/2021 10:31
272 E - Messenger Simulator GNU C++17 (64) data structures *2000 Apr/18/2021 01:40
271 C - Dijkstra? GNU C++17 (64) graphs shortest paths *1900 Apr/18/2021 00:51
270 D - GCD and MST GNU C++17 (64) constructive algorithms dsu graphs greedy number theory sortings *2000 Apr/17/2021 23:56
269 D - Points and Powers of Two GNU C++17 (64) brute force math *1800 Apr/17/2021 21:58
268 G - Strange Beauty GNU C++17 (64) dp math number theory sortings *1900 Apr/15/2021 23:16
267 C - Three Parts of the Array GNU C++17 (64) binary search data structures two pointers *1200 Apr/15/2021 22:36
266 G - Short Task GNU C++17 (64) brute force dp math number theory *1700 Apr/14/2021 21:39
265 F - Education GNU C++17 (64) brute force dp greedy implementation *1900 Apr/14/2021 21:10
264 D - Corrupted Array GNU C++17 (64) constructive algorithms data structures greedy *1200 Apr/14/2021 20:49
263 E - Permutation by Sum GNU C++17 (64) brute force greedy math *1600 Apr/14/2021 20:44
262 C - A-B Palindrome GNU C++17 (64) constructive algorithms implementation strings *1200 Apr/14/2021 20:13
261 B - Almost Rectangle GNU C++17 (64) implementation *800 Apr/14/2021 19:57
260 A - Spy Detected! GNU C++17 (64) brute force implementation *800 Apr/14/2021 19:47
259 C - Add One GNU C++17 (64) dp matrices *1600 Apr/14/2021 10:37
258 C - Ayoub and Lost Array GNU C++17 (64) combinatorics dp math *1500 Apr/13/2021 15:17
257 C - Count Triangles GNU C++17 (64) binary search implementation math two pointers *1800 Apr/13/2021 11:21
256 D - Multiplication Table GNU C++17 (64) binary search brute force *1800 Apr/13/2021 10:58
255 D - Min Cost String GNU C++17 (64) brute force constructive algorithms graphs greedy strings *1600 Apr/12/2021 22:23
254 C - Yet Another Card Deck GNU C++17 (64) brute force data structures implementation trees *1100 Apr/12/2021 20:57
253 B - GCD Length GNU C++17 (64) constructive algorithms math number theory *1100 Apr/12/2021 20:31
252 A - Review Site GNU C++17 (64) greedy *800 Apr/12/2021 20:08
251 C - Black Friday Kotlin *special problem implementation *1600 Apr/12/2021 16:11
250 B - AND Sequences GNU C++17 (64) bitmasks combinatorics constructive algorithms math *1400 Apr/11/2021 23:53
249 A - Array and Peaks GNU C++17 (64) constructive algorithms implementation *800 Apr/11/2021 20:13
248 D - Stas and the Queue at the Buffet GNU C++17 (64) greedy math sortings *1600 Apr/11/2021 00:27
247 C - Little Girl and Maximum Sum GNU C++17 (64) data structures greedy implementation sortings *1500 Apr/09/2021 22:57
246 B - Square? PyPy 3 brute force implementation math *900 Apr/08/2021 20:28
245 E - Travelling Salesman Problem GNU C++17 (64) binary search data structures dp graphs greedy shortest paths sortings *2200 Apr/08/2021 14:18
244 C - Balance the Bits GNU C++17 (64) brute force constructive algorithms greedy *1600 Apr/08/2021 10:30
243 E - Tetrahedron GNU C++17 (64) dp math matrices *1500 Apr/05/2021 23:23
242 E - Peddler C++ (GCC 9.2.1) AtCoder *500 Mar/30/2021 23:23
241 B - Visibility C++ (GCC 9.2.1) AtCoder *200 Mar/27/2021 17:39
240 A - Rotate C++ (GCC 9.2.1) AtCoder *100 Mar/27/2021 17:31
239 C - Doubled C++ (GCC 9.2.1) AtCoder *300 Mar/20/2021 17:36
238 B - Round Down C++ (GCC 9.2.1) AtCoder *200 Mar/20/2021 17:33
237 A - Difference Max C++ (GCC 9.2.1) AtCoder *100 Mar/20/2021 17:32
236 E - Mex Min Kotlin (1.3.71) AtCoder *500 Mar/12/2021 17:05
235 B - Remove It Kotlin (1.3.71) AtCoder *200 Mar/12/2021 01:27
234 A - Vanishing Pitch Kotlin (1.3.71) AtCoder *100 Mar/12/2021 01:18
233 C - Squared Error C++ (GCC 9.2.1) AtCoder *300 Mar/06/2021 18:06
232 B - Job Assignment C++ (GCC 9.2.1) AtCoder *200 Mar/06/2021 17:49
231 A - I Scream C++ (GCC 9.2.1) AtCoder *100 Mar/06/2021 17:34
230 F - Convolution C++ (GCC 9.2.1) AtCoder *100 Feb/27/2021 14:28
229 D - Base n PyPy3 (7.3.0) AtCoder *400 Feb/20/2021 22:43
228 C - Kaprekar Number C++ (GCC 9.2.1) AtCoder *300 Feb/20/2021 17:42
227 B - uNrEaDaBlE sTrInG C++ (GCC 9.2.1) AtCoder *200 Feb/20/2021 17:36
226 A - Star C++ (GCC 9.2.1) AtCoder *100 Feb/20/2021 17:32
225 C - Long Jumps GNU C++17 (64) dp graphs *1100 Jan/20/2021 20:36
224 B - Fair Division GNU C++17 (64) dp greedy math *800 Jan/20/2021 20:28
223 A - Cards for Friends GNU C++17 (64) greedy math *800 Jan/20/2021 20:19
222 C - Array Destruction GNU C++17 (64) brute force constructive algorithms data structures greedy implementation sortings *1700 Jan/19/2021 21:38
221 B - Different Divisors GNU C++17 (64) binary search constructive algorithms greedy math number theory *1000 Jan/19/2021 20:41
220 A - Puzzle From the Future GNU C++17 (64) greedy *800 Jan/19/2021 20:13
219 B - String LCM GNU C++17 (64) brute force math number theory strings *1000 Jan/19/2021 17:35
218 A - Replacing Elements GNU C++17 (64) greedy implementation math sortings *800 Jan/19/2021 17:21
217 E - A Bit Similar GNU C++17 (64) bitmasks brute force hashing string suffix structures strings two pointers *2400 Dec/30/2020 12:07
216 B - Red and Blue GNU C++17 (64) dp greedy *1000 Dec/29/2020 10:42
215 A - Maximum GCD GNU C++17 greedy implementation math number theory *800 Dec/29/2020 00:48
214 C - Building a Fence GNU C++17 (64) dp greedy implementation two pointers *1600 Dec/29/2020 00:16
213 D - Ceil Divisions GNU C++17 (64) brute force constructive algorithms math number theory *1700 Dec/28/2020 22:49
212 C - Plasticine zebra GNU C++17 (64) constructive algorithms implementation *1600 Dec/27/2020 21:46
211 B - Fair Numbers PyPy 3 brute force math number theory *1000 Dec/26/2020 21:26
210 N - Waste Sorting GNU C++17 (64) greedy implementation *900 Dec/26/2020 18:51
209 E - Four Segments GNU C++17 (64) greedy *800 Dec/26/2020 18:31
208 C - Berpizza GNU C++17 (64) data structures implementation *1400 Dec/26/2020 18:14
207 K - Lonely Numbers GNU C++17 (64) binary search math number theory two pointers *1600 Dec/25/2020 21:06
206 E - String Reversal GNU C++17 (64) data structures greedy strings *1900 Dec/25/2020 13:40
205 D - String Deletion GNU C++17 (64) binary search data structures greedy two pointers *1700 Dec/25/2020 12:52
204 C - Triangles GNU C++17 (64) greedy implementation *1700 Dec/25/2020 02:35
203 D - Powerful Ksenia GNU C++17 (64) bitmasks constructive algorithms math *2200 Dec/24/2020 21:16
202 C - Engineer Artem GNU C++17 (64) 2-sat chinese remainder theorem constructive algorithms fft flows *2000 Dec/24/2020 16:16
201 B - Valerii Against Everyone GNU C++17 (64) constructive algorithms data structures greedy sortings *1000 Dec/24/2020 15:44
200 A - Specific Tastes of Andre GNU C++17 (64) constructive algorithms implementation *800 Dec/24/2020 15:31
199 C2 - Errich-Tac-Toe (Hard Version) GNU C++17 (64) constructive algorithms math *2300 Dec/24/2020 00:07
198 C1 - Errich-Tac-Toe (Easy Version) GNU C++17 (64) constructive algorithms math *2100 Dec/24/2020 00:07
197 F - Identify the Operations GNU C++17 (64) brute force combinatorics data structures greedy math *1800 Dec/23/2020 19:35
196 D - Divide and Sum GNU C++17 (64) combinatorics math sortings *1900 Dec/23/2020 18:58
195 D - Rating Compression GNU C++17 (64) binary search data structures greedy implementation two pointers *1800 Dec/23/2020 18:32
194 C - Peaceful Rooks GNU C++17 (64) dfs and similar dsu greedy implementation *1700 Dec/20/2020 22:13
193 A - In-game Chat GNU C++17 (64) implementation strings *800 Dec/20/2020 20:39
192 D - Pairs GNU C++17 (64) binary search constructive algorithms greedy two pointers *1900 Dec/19/2020 20:46
191 C - Row GCD GNU C++17 (64) math number theory *1600 Dec/19/2020 18:02
190 B - Move and Turn GNU C++17 (64) dp math *1300 Dec/19/2020 17:55
189 B - Find The Array GNU C++17 (64) bitmasks constructive algorithms greedy *1400 Dec/19/2020 11:25
188 C - Busy Robot GNU C++17 (64) implementation *1800 Dec/18/2020 01:37
187 A - Dungeon GNU C++17 (64) binary search math *1100 Dec/17/2020 20:09
186 D - Almost All Divisors GNU C++17 (64) math number theory *1600 Dec/16/2020 21:30
185 E2 - Close Tuples (hard version) GNU C++17 (64) binary search combinatorics implementation math sortings two pointers *1700 Dec/16/2020 13:32
184 F - The Treasure of The Segments GNU C++17 (64) binary search data structures greedy *1800 Dec/16/2020 13:21
183 D - Add to Neighbour and Remove GNU C++17 (64) greedy math number theory *1400 Dec/15/2020 21:44
182 E1 - Close Tuples (easy version) GNU C++17 (64) binary search combinatorics math sortings two pointers *1500 Dec/15/2020 21:28
181 C - Unique Number GNU C++17 (64) brute force greedy math *900 Dec/15/2020 20:29
180 B - Last Year's Substring GNU C++17 (64) dp implementation strings *800 Dec/15/2020 20:21
179 A - Favorite Sequence GNU C++17 (64) implementation two pointers *800 Dec/15/2020 20:08
178 D - Divide and Summarize GNU C++17 (64) binary search brute force data structures divide and conquer implementation sortings *1600 Dec/12/2020 12:34
177 B - Find the Spruce GNU C++17 (64) brute force dp implementation *1400 Dec/12/2020 12:07
176 C - Random Events GNU C++17 (64) dp math probabilities *1500 Dec/12/2020 11:42
175 A - String Generation GNU C++17 (64) constructive algorithms greedy *800 Dec/12/2020 11:20
174 C - Knapsack GNU C++17 (64) constructive algorithms greedy math sortings *1300 Dec/09/2020 11:40
173 B - Balls of Steel GNU C++17 (64) brute force geometry greedy *1000 Dec/06/2020 20:28
172 A - Avoid Trygub GNU C++17 (64) constructive algorithms sortings *800 Dec/06/2020 20:07
171 B - Suffix Operations GNU C++17 (64) constructive algorithms implementation *1400 Dec/05/2020 20:36
170 A - Cancel the Trains GNU C++17 (64) implementation *800 Dec/04/2020 18:38
169 D - Coins and Queries GNU C++17 (64) greedy *1600 Dec/03/2020 17:54
168 B - Little Elephant and Array GNU C++17 (64) constructive algorithms data structures *1800 Dec/02/2020 15:43
167 D - Vus the Cossack and Numbers GNU C++17 (64) constructive algorithms greedy math *1500 Dec/01/2020 17:19
166 B - Black Square GNU C++17 (64) implementation *1300 Dec/01/2020 16:47
165 A - Strange Functions GNU C++17 (64) math number theory *800 Dec/01/2020 00:35
164 D - Sequence and Swaps GNU C++17 (64) dp greedy sortings *1600 Nov/30/2020 21:20
163 C - Ping-pong GNU C++17 (64) constructive algorithms games math *1100 Nov/30/2020 20:53
162 B - Jumps GNU C++17 (64) constructive algorithms math *1200 Nov/30/2020 20:30
161 B - Longtail Hedgehog GNU C++17 (64) dp graphs *1600 Nov/30/2020 16:30
160 C - Rotation Matching GNU C++17 (64) constructive algorithms data structures greedy implementation *1400 Nov/30/2020 16:06
159 C - Bouncing Ball GNU C++17 (64) dp implementation *1400 Nov/29/2020 13:50
158 B - Repainting Street GNU C++17 (64) brute force greedy *1100 Nov/29/2020 12:55
157 A - Prison Break GNU C++17 (64) brute force math *800 Nov/29/2020 12:43
156 F - Array Partition GNU C++17 (64) binary search data structures greedy two pointers *2100 Nov/28/2020 00:20
155 C - Anton and Making Potions GNU C++17 (64) binary search dp greedy two pointers *1600 Nov/27/2020 00:36
154 B - Pipeline GNU C++17 (64) binary search math *1700 Nov/26/2020 23:20
153 B - String Typing GNU C++17 (64) implementation strings *1400 Nov/26/2020 22:38
152 E - Number of Simple Paths GNU C++17 (64) combinatorics dfs and similar graphs trees *2000 Nov/26/2020 19:54
151 D - Sum of Divisors C++ (GCC 9.2.1) AtCoder *400 Nov/26/2020 16:31
150 A - Three Indices GNU C++17 (64) brute force data structures *900 Nov/26/2020 00:56
149 B - Universal Solution GNU C++17 (64) greedy *1400 Nov/26/2020 00:45
148 B - National Project GNU C++17 (64) math *1400 Nov/26/2020 00:28
147 D - Number into Sequence GNU C++17 (64) constructive algorithms math number theory *1300 Nov/24/2020 20:43
146 C - Sequence Transformation GNU C++17 (64) greedy implementation *1200 Nov/24/2020 20:25
145 B - Unique Bid Auction GNU C++17 (64) implementation *800 Nov/24/2020 20:13
144 A - Special Permutation GNU C++17 (64) constructive algorithms probabilities *800 Nov/24/2020 20:07
143 B - Powers of Two GNU C++17 (64) brute force data structures implementation math *1500 Nov/24/2020 18:01
142 A - Robot Program GNU C++17 (64) math *800 Nov/19/2020 20:19
141 C2 - Binary Table (Hard Version) GNU C++17 (64) constructive algorithms implementation *1900 Nov/18/2020 21:06
140 C1 - Binary Table (Easy Version) GNU C++17 (64) constructive algorithms implementation *1500 Nov/17/2020 20:48
139 B - Sum of Medians GNU C++17 (64) greedy math *900 Nov/17/2020 20:19
138 A - Buy the String GNU C++17 (64) implementation math *800 Nov/17/2020 20:11
137 A - Add Candies GNU C++17 (64) constructive algorithms math *800 Nov/17/2020 19:18
136 B - Numbers Box GNU C++17 (64) greedy math *1000 Nov/17/2020 19:16
135 E - Xenia and Tree GNU C++17 (64) data structures divide and conquer trees *2400 Nov/10/2020 18:17
134 D - Wandering C++ (GCC 9.2.1) AtCoder *400 Nov/08/2020 18:19
133 C - To 3 C++ (GCC 9.2.1) AtCoder *300 Nov/08/2020 17:44
132 B - Almost GCD C++ (GCC 9.2.1) AtCoder *200 Nov/08/2020 17:36
131 A - twiblr C++ (GCC 9.2.1) AtCoder *100 Nov/08/2020 17:32
130 C - Useful Decomposition GNU C++17 (64) implementation trees *1400 Nov/08/2020 16:56
129 B - DNA Sequence C++ (GCC 9.2.1) AtCoder *400 Nov/08/2020 16:21
128 C - Link Cut Centroids GNU C++17 (64) constructive algorithms dfs and similar graphs trees *1700 Nov/08/2020 13:02
127 D - Extreme Subtraction GNU C++17 (64) dp greedy math *1800 Nov/05/2020 23:14
126 C - The Delivery Dilemma GNU C++17 (64) binary search greedy sortings *1400 Nov/05/2020 19:16
125 B - Saving the City GNU C++17 (64) dp greedy math sortings *1300 Nov/05/2020 19:04
124 A - Kids Seating GNU C++17 (64) constructive algorithms math *800 Nov/05/2020 18:41
123 A - Skyscrapers GNU C++17 (64) implementation sortings *1600 Nov/04/2020 17:36
122 D - Leaping Tak C++ (GCC 9.2.1) AtCoder *400 Nov/02/2020 22:16
121 C - Electrification GNU C++17 (64) binary search brute force greedy *1600 Nov/02/2020 17:06
120 C - Division GNU C++17 (64) math number theory *1500 Nov/01/2020 18:15
119 B - Elimination GNU C++17 (64) greedy math *900 Nov/01/2020 16:57
118 A - Array Rearrangment GNU C++17 (64) greedy sortings *800 Nov/01/2020 16:38
117 B - Chess Cheater GNU C++17 (64) greedy implementation sortings *1400 Oct/31/2020 18:27
116 D - Common Divisors GNU C++17 (64) brute force hashing implementation math strings *1400 Oct/30/2020 20:36
115 C2 - Exam in BerSU (hard version) GNU C++17 (64) brute force data structures greedy math *1700 Oct/30/2020 19:42
114 C1 - Exam in BerSU (easy version) GNU C++17 (64) greedy sortings *1200 Oct/30/2020 19:12
113 C - Find Maximum GNU C++17 (64) implementation math number theory *1600 Oct/30/2020 18:41
112 B - Hyperset GNU C++17 (64) brute force data structures implementation *1500 Oct/29/2020 18:48
111 B - Makes And The Product GNU C++17 (64) combinatorics implementation math sortings *1500 Oct/29/2020 18:27
110 C - Mortal Kombat Tower GNU C++17 (64) dp graphs greedy shortest paths *1500 Oct/29/2020 17:30
109 C - Dasha and Password GNU C++17 (64) brute force dp implementation *1500 Oct/28/2020 20:34
108 D - Minimal Height Tree GNU C++17 (64) graphs greedy shortest paths trees *1600 Oct/28/2020 12:18
107 B - Reverse Binary Strings GNU C++17 (64) constructive algorithms greedy *1200 Oct/27/2020 20:41
106 A - Marketing Scheme GNU C++17 (64) brute force constructive algorithms greedy math *800 Oct/27/2020 20:14
105 D - Game With Array GNU C++17 (64) constructive algorithms math *1400 Oct/27/2020 17:25
104 C - Soldier and Cards GNU C++17 (64) brute force dfs and similar games *1400 Oct/27/2020 16:47
103 C - Memory and De-Evolution GNU C++17 (64) greedy math *1600 Oct/26/2020 19:15
102 A - Case of Matryoshkas GNU C++17 (64) implementation *1500 Oct/26/2020 01:35
101 A - NP-Hard Problem GNU C++17 (64) dfs and similar graphs *1500 Oct/26/2020 01:10
100 B - Double Matrix GNU C++17 (64) brute force greedy *1400 Oct/26/2020 00:08
99 A - Finding Sasuke GNU C++17 (64) math *800 Oct/25/2020 19:06
98 B - A New Technique GNU C++17 (64) constructive algorithms implementation *1100 Oct/25/2020 19:06
97 D - Bandit in a City GNU C++17 (64) binary search dfs and similar graphs greedy trees *1900 Oct/25/2020 02:23
96 C - Binary Search GNU C++17 (64) binary search combinatorics *1500 Oct/24/2020 21:12
95 B - Prime Square GNU C++17 (64) constructive algorithms math *900 Oct/24/2020 20:10
94 A - Reorder GNU C++17 (64) math *800 Oct/24/2020 19:38
93 C - The Hard Work of Paparazzi GNU C++17 (64) dp *2000 Oct/23/2020 11:55
92 F - Zero Remainder Sum GNU C++17 (64) dp *2100 Oct/23/2020 11:14
91 C - Count Order C++ (GCC 9.2.1) AtCoder *300 Sep/30/2020 00:27
90 C - Next Prime C++ (GCC 9.2.1) AtCoder *300 Sep/30/2020 00:11
89 C - Alchemist C++ (GCC 9.2.1) AtCoder *300 Sep/30/2020 00:05
88 C - Go to School C++ (GCC 9.2.1) AtCoder *300 Sep/30/2020 00:01
87 C - Divide the Problems C++ (GCC 9.2.1) AtCoder *300 Sep/29/2020 23:54
86 C - Traveling Salesman around Lake C++ (GCC 9.2.1) AtCoder *300 Sep/29/2020 23:42
85 C - Rally C++ (GCC 9.2.1) AtCoder *300 Sep/29/2020 23:34
84 B - Power Socket C++ (GCC 9.2.1) AtCoder *200 Sep/29/2020 23:30
83 C - A x B + C C++ (GCC 9.2.1) AtCoder *300 Sep/20/2020 11:32
82 B - Go to Jail C++ (GCC 9.2.1) AtCoder *200 Sep/20/2020 11:10
81 A - Plural Form C++ (GCC 9.2.1) AtCoder *100 Sep/20/2020 11:08
80 F - Contrast C++ (GCC 9.2.1) AtCoder *600 Sep/14/2020 11:34
79 E - Dist Max C++ (GCC 9.2.1) AtCoder *500 Sep/14/2020 11:13
78 D - Redistribution C++ (GCC 9.2.1) AtCoder *400 Sep/14/2020 10:56
77 C - Ubiquity C++ (GCC 9.2.1) AtCoder *300 Sep/14/2020 10:48
76 B - Product Max C++ (GCC 9.2.1) AtCoder *200 Sep/14/2020 10:33
75 A - Not C++ (GCC 9.2.1) AtCoder *100 Sep/14/2020 10:30
74 C - Sum of product of pairs C++ (GCC 9.2.1) AtCoder *300 Aug/31/2020 17:10
73 B - Substring PyPy3 (7.3.0) AtCoder *200 Aug/29/2020 18:40
72 E - Coprime C++ (GCC 9.2.1) AtCoder *500 Aug/29/2020 18:37
71 D - Friends C++ (GCC 9.2.1) AtCoder *400 Aug/29/2020 18:04
70 A - Don't be late C++ (GCC 9.2.1) AtCoder *100 Aug/29/2020 17:32
69 B - Fix You GNU C++17 brute force greedy implementation *800 Aug/09/2020 20:22
68 C - Pinkie Pie Eats Patty-cakes GNU C++17 constructive algorithms greedy math sortings *1700 Aug/09/2020 19:35
67 B - Applejack and Storages GNU C++17 constructive algorithms data structures greedy implementation *1400 Aug/07/2020 20:58
66 A - Rainbow Dash, Fluttershy and Chess Coloring GNU C++17 greedy math *800 Aug/07/2020 20:10
65 D - Binary String To Subsequences GNU C++17 constructive algorithms data structures greedy implementation *1500 Aug/06/2020 18:30
64 C - Boats Competition GNU C++17 brute force greedy two pointers *1200 Aug/05/2020 20:31
63 B - Gifts Fixing GNU C++17 greedy *800 Aug/05/2020 20:15
62 A - Remove Smallest GNU C++17 greedy sortings *800 Aug/05/2020 20:09
61 D - Captain Flint and Treasure GNU C++17 data structures dfs and similar graphs greedy implementation trees *2000 Aug/01/2020 18:34
60 C - Uncle Bogdan and Country Happiness GNU C++17 dfs and similar greedy math trees *1800 Jul/30/2020 23:16
59 B - Captain Flint and a Long Voyage GNU C++17 greedy math *1000 Jul/30/2020 20:45
58 A - Captain Flint and Crew Recruitment GNU C++17 brute force greedy math number theory *800 Jul/30/2020 20:15
57 C - Good String GNU C++17 brute force dp greedy two pointers *1500 Jul/30/2020 18:58
56 E - Special Elements GNU C++17 brute force implementation two pointers *1500 May/09/2020 22:48
55 G - Special Permutation GNU C++17 constructive algorithms *1600 May/09/2020 21:47
54 B - Same Parity Summands GNU C++17 constructive algorithms math *1200 May/09/2020 21:32
53 F - Binary String Reconstruction GNU C++17 constructive algorithms dfs and similar math *1500 May/09/2020 21:26
52 D - Alice, Bob and Candies GNU C++17 implementation *1300 May/09/2020 20:51
51 C - K-th Not Divisible by n GNU C++17 binary search math *1200 May/09/2020 20:30
50 A - Sum of Round Numbers GNU C++17 implementation math *800 May/09/2020 20:10
49 D - Anti-Sudoku GNU C++17 constructive algorithms implementation *1300 Apr/18/2020 17:14
48 C - Two Teams Composing GNU C++17 binary search greedy implementation sortings *1100 Apr/18/2020 17:07
47 B - Construct the String GNU C++17 constructive algorithms *900 Apr/18/2020 16:53
46 A - Candies and Two Sisters GNU C++14 math *800 Apr/18/2020 16:46
45 C - Sum of gcd of Tuples (Easy) C++ (GCC 9.2.1) AtCoder *300 Apr/12/2020 17:42
44 A - Lucky 7 C++ (GCC 9.2.1) AtCoder *100 Apr/12/2020 17:37
43 B - FizzBuzz Sum C++ (GCC 9.2.1) AtCoder *200 Apr/12/2020 17:36
42 C - Replacing Integer C++14 (GCC 5.4.1) AtCoder *300 Apr/04/2020 17:51
41 B - Popular Vote C++14 (GCC 5.4.1) AtCoder *200 Apr/04/2020 17:37
40 A - ABC Swap C++14 (GCC 5.4.1) AtCoder *100 Apr/04/2020 17:32
39 B - Dreamoon Likes Permutations GNU C++14 implementation math *1400 Apr/03/2020 20:59
38 A - Dreamoon and Ranking Collection GNU C++14 implementation *900 Apr/03/2020 20:20
37 C - Vacation C++14 (GCC 5.4.1) AtCoder *100 Apr/01/2020 23:38
36 A - Kuroni and the Gifts GNU C++14 brute force constructive algorithms greedy sortings *800 Apr/01/2020 18:19
35 E - Knapsack 2 C++14 (GCC 5.4.1) AtCoder *100 Apr/01/2020 13:12
34 F - LCS C++14 (GCC 5.4.1) AtCoder *100 Mar/31/2020 22:11
33 D - Knapsack 1 C++14 (GCC 5.4.1) AtCoder *100 Mar/31/2020 20:30
32 B - Kanban Numbers GNU C++14 brute force Mar/31/2020 13:23
31 A - Thanos Sort GNU C++14 implementation Mar/31/2020 13:17
30 B - Golden Coins C++14 (GCC 5.4.1) AtCoder *200 Mar/28/2020 22:45
29 A - Coffee C++14 (GCC 5.4.1) AtCoder *100 Mar/28/2020 22:41
28 D - Carousel GNU C++14 constructive algorithms dp graphs greedy math *1800 Mar/28/2020 13:09
27 C - Ternary XOR GNU C++14 greedy implementation *1200 Mar/28/2020 13:03
26 E - Bertown roads GNU C++14 dfs and similar graphs *2000 Mar/27/2020 20:58
25 B - K-th Beautiful String GNU C++14 binary search brute force combinatorics implementation math *1300 Mar/26/2020 21:24
24 A - Divisibility Problem GNU C++14 math *800 Mar/26/2020 20:08
23 C - Modified GCD GNU C++14 binary search number theory *1600 Mar/24/2020 19:45
22 A - Life Without Zeros GNU C++14 implementation *1000 Mar/24/2020 19:44
21 C - Game with Chips GNU C++14 constructive algorithms implementation *1600 Mar/23/2020 22:37
20 B - Princesses and Princes GNU C++14 brute force graphs greedy *1200 Mar/23/2020 22:23
19 B - Frog 2 C++14 (GCC 5.4.1) AtCoder *100 Mar/23/2020 19:20
18 A - Frog 1 C++14 (GCC 5.4.1) AtCoder *100 Mar/23/2020 19:15
17 A - Angry Students GNU C++14 greedy implementation *800 Mar/22/2020 19:31
16 A - Even Subset Sum Problem GNU C++14 brute force dp greedy implementation *800 Mar/20/2020 21:45
15 C - Permutation Partitions GNU C++14 combinatorics greedy math *1300 Mar/19/2020 21:44
14 B - Maximums GNU C++14 implementation math *900 Mar/19/2020 20:29
13 A - Bad Ugly Numbers GNU C++14 constructive algorithms number theory *1000 Mar/19/2020 20:15
12 B - CopyCopyCopyCopyCopy GNU C++14 greedy implementation *800 Mar/16/2020 00:31
11 A - EhAb AnD gCd GNU C++14 constructive algorithms greedy number theory *800 Mar/16/2020 00:29
10 F1 - Spanning Tree with Maximum Degree GNU C++14 graphs *1600 Mar/14/2020 10:33
9 D - Pair of Topics GNU C++14 binary search data structures sortings two pointers *1400 Mar/12/2020 20:41
8 C - Frog Jumps GNU C++14 binary search data structures dfs and similar greedy implementation *1100 Mar/12/2020 19:02
7 A - Yet Another Tetris Problem GNU C++14 implementation number theory *900 Mar/12/2020 18:41
6 D - Count the Arrays GNU C++14 combinatorics math *1700 Mar/10/2020 12:24
5 C - Adding Powers GNU C++14 bitmasks greedy implementation math number theory ternary search *1400 Mar/10/2020 12:05
4 B - Bogosort GNU C++14 constructive algorithms sortings *1000 Mar/10/2020 11:53
3 A - Two Regular Polygons GNU C++14 geometry greedy math number theory *800 Mar/09/2020 20:09
2 B - Obtain Two Zeroes GNU C++14 binary search math *1300 Mar/09/2020 18:37
1 A - Erasing Zeroes GNU C++14 implementation strings *800 Feb/15/2020 18:43

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