Wanted

4815:problems_untagged

ID Name Difficulty Solver
tessoku_book_ee B58. Jumping null 845
math_and_algorithm_au 055. Recurrence Formula 1 null 842
awc0004_d D. Parking Lot Assignment null 823
past202107_c C. Validation null 814
math_and_algorithm_bg 073. Sum of Maximum null 805
joig2023_b B. 絶対階差数列 (Sequence of Absolute Differences) null 798
joi2025_yo1b_c C. じゃんけん (Rock-Scissors-Paper) null 797
math_and_algorithm_bs 092. Beautiful Rectangle null 795
awc0006_b B. Efficient Quests null 792
math_and_algorithm_av 056. Recurrence Formula 2 null 791
past202107_d D. Replace null 791
joig2022_c C. 投票 (Voting) null 790
awc0005_e E. Mountain Height Survey null 789
past202112_b B. Perforated Coin null 787
joi2026_yo1a_a A. 面積 (Area) null 785
math_and_algorithm_bh 074. Sum of difference Easy null 785
math_and_algorithm_bq 087. Simple Math Easy null 780
past202109_e E. Colorful T-Shirts null 775
awc0007_a A. Selection of Delivery Trucks null 774
joi2026_yo1b_a A. 宿題 2 (Homework 2) null 771
awc0006_c C. Air Conditioner Temperature Adjustment null 770
past202112_c C. Fastest Answer null 761
agc020_f F. Arcs on a Circle null 759
ndpc2026_d D. Banknote null 757
fps_24_c C. 数列 null 753
awc0005_d D. Splitting Delivery Packages null 748
math_and_algorithm_bp 086. Parentheses Check null 747
awc0003_e E. Cargo Delivery Truck null 743
math_and_algorithm_be 068. Number of Multiples 2 null 739
tessoku_book_aw A49. Heuristic 2 null 736
pakencamp_2021_day2_a A. Participants 2 null 733
past202309_a A. ツバメ null 733
tessoku_book_fh C10. A Long Grid null 733
joi2022ho_a A. インターカステラー (Intercastellar) null 731
joi2025_yo1c_c C. いずれか片方 (Either, but Not Both) null 731
genocon2021_a A. Practice 1 null 728
tessoku_book_ff C08. ALGO4 null 728
awc0008_a A. Planting the Flower Bed null 722
past202203_a A. Three cards null 722
math_and_algorithm_bd 066. Three Cards null 717
math_and_algorithm_bo 085. Two Conditions null 711
awc0008_b B. Buildings Visible from the Sea null 708
past202112_d D. Examination null 705
math_and_algorithm_bj 077. Distance Sum null 702
past202107_e E. Aoki's Trick null 702
pakencamp_2020_day1_c C. 皆勤賞 null 700
past202203_b B. Flowers null 698
codequeen2023_final_a A. QUEN null 695
awc0008_c C. Anomaly Detection in Sensor Data null 684
joi2024_yo2_b B. 買い物 2 (Shopping 2) null 677
past202112_e E. Keyboard null 675
past202109_f F. Incomplete Permutation null 667
awc0007_b B. Laboratories That Can Collaborate null 664
1202Contest_a A. DEGwer's Doctoral Dissertation null 662
joi2025_yo2_a A. マスキングテープ (Masking Tape) null 661
past202107_f F. Double Booking null 660
past202206_a A. The Tortoise and the Hare null 660
math_and_algorithm_bi 075. Pyramid null 655
math_and_algorithm_by 089. Log Inequality 2 null 651
math_and_algorithm_bk 078. Difference Optimization 1 null 648
awc0007_c C. Group Knockout Battle null 647
pakencamp_2020_day2_a A. Participants null 637
tessoku_book_ep B69. Black Company 2 null 631
joig2023_c C. 鐘 (Bell) null 626
joig2022_d D. いちご 2 (Strawberry 2) null 624
awc0006_d D. Placement of Security Guards null 618
awc0009_a A. Total Shopping Amount null 618
codequeen2024_final_b C. Decode Time Signal null 618
joi2026_yo1b_b B. 帰省 2 (Homecoming 2) null 617
fps_24_d D. 数列 2 null 614
ndpc2026_e E. Summer Vacation null 611
joig2024_a A. 三連続 (Three Consecutive) null 608
tessoku_book_fi C11. Election null 608
past202212_a A. Tokens null 603
awc0010_a A. Distributing Requests to Servers null 601
awc0008_d D. Orchard Harvest null 600
awc0006_e E. Store Sales Management null 599
joi2025_yo1b_d D. 三角足し算 (Triangle Addition) null 596
awc0007_d D. Investigation of Overlapping Advertisement Areas null 593
past202203_c C. Go Further null 592
fps_24_e E. 数列 3 null 588
joi2026_yo1a_b B. ノートパソコン (Laptop) null 587
codequeen2024_final_a B. Welcome to AtCoder Land 2 null 586
past17_a A. BMI null 582
awc0010_b B. Piano Practice null 581
ttpc2022_a A. Next TTPC 2 null 581
past202203_d D. High Score null 579
awc0009_b B. Dungeon Exploration null 578
past202303_a A. シンプル石取りゲーム null 577
past202206_b B. Two Letters null 575
agc012_f F. Prefix Median null 572
math_and_algorithm_bf 071. Linear Programming null 571
past202112_f F. Like As Shogi null 571
past202309_b B. スロット null 571
joig2024_b B. ダンス (Dance) null 570
codequeen2023_final_b B. N-Queens Problem null 569
joi2023_yo2_c C. 塗りつぶし (Painting) null 567
awc0009_c C. Apple Harvest null 565
past202112_g G. Connectivity null 563
past202109_h H. Shortest Path null 562
past202206_c C. Order null 560
pakencamp_2021_day2_b B. Pasokon Power null 559
past202306_b B. 殿堂入り null 559
joisc2015_k K. 遺産相続 null 558
joi2023ho_a A. 碁石ならべ 2 (Stone Arranging 2) null 556
tessoku_book_fk C13. Select 2 null 556
math_and_algorithm_bt 097. Primes in an Interval null 548
tessoku_book_eo B68. ALGO Express null 544
awc0010_d D. Rock Destruction null 543
fps_24_f F. 色紙 null 543
awc0008_e E. Organizing the Bookshelf null 542
rcl_contest_2021_a A. 魔法使いXの戦い null 540
past202209_a A. Trafic Light null 539
past17_e E. 連長圧縮 null 535
awc0010_c C. Mountain Hut Trails null 534
awc0013_a A. Path to the Target Score null 533
past202309_c C. コンテスト null 530
kupc2021_a A. Standing Sign null 526
past19_a A. 毎時運行 null 522
past202109_i I. /2 and *3 null 521
joi2026_yo1a_c C. シャッフル 2 (Shuffle 2) null 519
past202212_b B. Fractional Comparison null 519
tessoku_book_fl C14. Commute Route null 518
nadafes2022_day1_a A. Max Inversion null 517
past202107_g G. Power Expression null 515
past202203_g G. Equations null 514
joi2021ho_a A. とてもたのしい家庭菜園 (Growing Vegetables is Fun 4) null 513
past17_b B. フルコンボ null 512
joi2022ho_b B. 自習 (Self Study) null 507
past202303_c C. 逆順列 null 504
math_and_algorithm_bl 080. Difference Optimization 2 null 503
past202209_b B. Credits null 501
awc0014_a A. Loading Cargo null 500
past202112_h H. Longest Non-common Subsequence null 499
awc0013_c C. Optimal Pairing for a Tournament null 498
awc0012_a A. Typhoon Damage Survey null 497
joi2021ho_b B. 雪玉 (Snowball) null 497
past202109_j J. Reverse Array null 493
joi2017ho_b B. 準急電車 (Semiexpress) null 491
past202212_c C. Triplet Product null 490
awc0015_a A. Dot Product Calculation null 489
utpc2020_a A. Row of Tents null 489
awc0013_b B. Investigation of Friend Relationships null 488
birthday0410_a A. A + B null 487
past202209_c C. Biased Dice null 485
past17_c C. 換金 null 484
awc0011_a A. A Walk Along the Cherry Blossom Trees null 483
pakencamp_2021_day2_c C. Participants 3 null 483
pakencamp_2022_day1_a A. Rook null 482
rcl_contest_2021_b B. マッサージチェア2021 null 482
awc0016_a A. Over Budget null 481
fps_24_i I. スコア null 481
ndpc2026_h H. Coin null 481
tessoku_book_fj C12. Taro the Novel Writer null 481
joi2025_yo1c_d D. 周期文字列 (Cycle String) null 478
awc0009_d D. Planting Flower Seeds null 476
awc0009_e E. Temperature Fluctuation Survey null 476
awc0012_b B. Factory Quality Inspection null 476
pakencamp_2020_day1_f F. Fibonaccyan null 475
past202203_e E. Only 2 kinds null 472
joisc2014_e E. 水筒 null 471
past202203_f F. Coloring map null 471
past202212_e E. Parentheses null 471
joi2025_yo2_b B. ビリヤード (Billiards) null 470
awc0016_b B. Exam Preparation null 465
awc0012_c C. Team Formation null 464
pakencamp_2021_day3_a A. 出欠確認 null 464
awc0011_b B. Creating Mosaic Art null 461
awc0017_a A. Organizing the Bookshelf null 461
awc0011_c C. Maximum Number of Team Members null 460
awc0015_b B. First Alert null 460
awc0016_c C. Choosing Souvenirs null 460
past202206_d D. Similar Strings null 459
joig2023_d D. コイン集め 2 (Coin Collecting 2) null 457
awc0007_e E. Warehouse Robot Delivery null 453
awc0018_a A. Round-Trip Patrol null 453
fps_24_g G. 硬貨 null 451
awc0020_a A. Equalizing Water null 450
past19_b B. 入金と出金 null 449
past202212_d D. Bozu Mekuri null 449
fps_24_h H. ジャンプ null 448
oupc2023_day1_a A. Mijingiri null 448
past202206_f F. Gun Shooting null 446
past202206_g G. Is it a tree? null 446
past202303_b B. 小数点第 D 位 null 444
awc0017_b B. Brightness of Street Lights null 440
pakencamp_2020_day1_e E. Amary null 440
joi2024ho_a A. 室温 (Room Temperature) null 439
awc0011_d D. Family Tree and Inheritance null 434
awc0014_b B. Marathon null 432
tupc2022_a A. Sum Sort null 432
awc0017_c C. Same Color Check in the Flower Bed null 430
pakencamp_2021_day2_d D. 選択問題の正答はすべて同じ選択肢で… null 429
awc0013_d D. Distance Between Cities null 428
pakencamp_2023_day1_a A. Kazuate Game null 427
past202112_i I. Direct Elevator null 427
past202209_d D. Marking null 427
awc0010_e E. Exhibition Booth Arrangement null 426
past202206_e E. Strange Sequence null 426
joi2026_yo1c_a A. テスト (Test) null 425
joig2022_e E. エゴイ展 (EGOI Exhibition) null 425
awc0019_a A. Number of Successful Applicants null 424
codequeen2023_final_c C. Path Intersection null 424
joi2016ho_c C. 鉄道運賃 (Train Fare) null 424
past202309_e E. 10 の n 乗 null 424
ndpc2026_f F. Set null 423
past17_d D. Webサービス null 420
joi2022_yo2_d D. 飴 2 (Candies 2) null 419
awc0012_d D. Escape from the Maze null 417
ndpc2026_g G. Mouth null 417
tessoku_book_fm C15. Many Meetings null 416
past202303_f F. 集合の問題 null 415
awc0019_b B. Cheerful Support Message null 411
past202107_i I. Nevus null 411
joisc2008_fraction fraction. 分数 (Fraction) null 409
awc0015_d D. Assignment of Cooking Tasks null 407
past202112_k K. Gas Station null 407
awc0015_c C. Matchup Card Combinations null 406
joi2026_yo1b_c C. 葵とIOI (Aoi and IOI) null 406
past202206_h H. Two Knapsacks null 405
past202309_d D. 相対評価のスコア null 404
tessoku_book_fo C17. Strange Data Structure? null 404
awc0019_c C. Consecutive Card Distribution null 403
pakencamp_2020_day1_g G. 同意書 null 401
awc0025_a A. Passing Score null 399
joisc2014_b B. たのしい家庭菜園 null 399
joisc2015_a A. コピー&ペースト 2 null 399
awc0021_a A. Counting the Number of Successful Applicants null 396
past202203_h H. Connected Components null 396
joi2010ho_b B. お菓子の分割 null 395
past202309_f F. 式の評価 null 395
awc0016_d D. The Path of Carrying Luggage null 394
masters_qual_a A. Smoothing by Swaps null 394
math_and_algorithm_bv 100. Simulation of Chemicals null 394
genocon2021_b B. Practice 2 null 393
nadafes2022_day1_b B. Exist Multiples null 393
awc0017_d D. Team Building null 392
awc0014_d D. Round-Trip Delivery null 390
joigsc2022_a A. リレー競技 (Relay) null 390
awc0012_e E. Stone Crossing Game null 389
past202303_g G. 隣り合うマス null 389
tkppc6_1_a A. 技術室奥プログラミングコンテストの未来 null 389
pakencamp_2020_day1_d D. 立方体を壊せ！ null 388
joisc2016_h H. 回転寿司 null 387
past202303_e E. 図形のシャッフル null 387
awc0020_c C. Organizing the Bookshelf null 386
past202209_e E. Hitting Stick Game null 380
awc0018_b B. Classroom Assignment null 379
codequeen2025_final_b C. カップリング選抜 null 379
past202203_k K. Planning null 378
tenka1_2014_final_d D. 高橋君 null 378
awc0030_a A. Distribution of Sweets null 377
awc0020_b B. Climbing to the Summit null 376
monamieHB2021_a A. Crab or Shrimp null 376
pakencamp_2022_day1_b B. Power Strip null 376
past202212_g G. Range Sum null 376
awc0027_a A. Passing Criteria null 375
awc0022_a A. Battery Level and Charger Arrival null 373
awc0019_d D. Conservation Plan for the Botanical Garden null 371
tkppc6_1_b B. カラフルパ研 null 371
awc0018_c C. Bulk Character Conversion null 370
awc0013_e E. Part-Time Job Shift Assignment null 368
joig2024_c C. 座席 2 (Seats 2) null 367
past202306_c C. 円の描画 null 367
joi2023ho_b B. 宣伝 2 (Advertisement 2) null 365
awc0014_c C. Catch the Last Train! null 363
awc0026_a A. Announcement of Winning Numbers null 363
joig2025_a A. カードゲーム 4 (Card Game 4) null 363
joi2011ho4 D. 歩くサンタクロース (Walking Santa) null 362
joig2024_d D. たくさんの数字 (Many Digits) null 362
awc0014_e E. Flowerbed Watering Management null 361
awc0018_d D. Smart Shopper null 361
awc0028_a A. Applause for the Successful Candidates null 361
maximum_cup_2023_a A. 倍数ペア null 360
past202303_d D. シューティング null 360
codequeen2024_final_c F. Attraction on Rainy Day null 359
awc0024_a A. Comparing Test Scores null 358
joisc2014_a A. バス通学 null 358
math_and_algorithm_bu 098. Polygon and Point null 358
awc0026_c C. Field Trip Snacks null 357
awc0022_b B. Target Score for the Test null 356
awc0026_b B. Distribution of Jewels null 356
awc0027_b B. Election of the Class President null 356
joi2024ho_b B. 建設事業 2 (Construction Project 2) null 356
math_and_algorithm_aw 057. Domino Tiling null 355
past202303_h H. 3 枚階段 null 355
tupc2023_a A. Namboku / Tozai Line null 355
awc0023_a A. Chef's Break null 353
awc0025_c C. Air Conditioning Installation in Classrooms null 352
joi2026_yo1a_d D. oxゲーム (Xs and Os) null 352
past202209_g G. Wildcards null 350
tkppc6_2_a A. >_< null 349
awc0022_c C. Road Pothole Survey null 348
awc0027_c C. Building a Wireless Network null 347
awc0025_b B. Warehouse Inspection Robot null 346
cf16_exhibition_final_e E. Water Distribution null 346
past202209_f F. Pharmacist null 346
awc0021_b B. Scholarship Selection null 345
joi2025ho_a A. 色塗り (Grid Coloring) null 344
toyota2023spring_final_b B. Best Strategy null 344