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  • AMC 8: [year] AMC 8 Problem #, Ex: 2013 AMC 8 Problem 1
  • AMC 10: [year] AMC 10A Problem # OR [year] AMC 10B Problem #, Ex: 2015 AMC 10A Problem 16
  • AMC 12: [year] AMC 12A Problem # OR [year] AMC 12B Problem #, Ex: 2021 AMC 12B Problem 25
  • AIME: [year] AIME I Problem # OR [year] AIME II Problem #, Ex: 2013 AIME I Problem 8
  • USAJMO/USAMO: [year] USAJMO/USAMO Problem #, Ex: 2023 USAJMO Problem 1
  • Codeforces: Codeforces [contest id (e.g. 101)][problem id (e.g. A, B, C)]: [Codeforces problem name], Ex: Codeforces 1336F: Journey
  • AtCoder: AtCoder [contest id (e.g. ABC314, ARC164, ZONE2021)]: [problem id (A, B, C)]. [Problem name], Ex: AtCoder ZONE2021: E. Sneaking
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  • USACO: [year] [contest month (e.g. January, US Open)], [division (e.g. Gold)]: [Problem name], Ex: USACO 2023 US Open Contest, Bronze: Rotate and Shift

ID Problem Name (click to add insights/hints, view summary of insights/hints and similar problems)
5700 Codeforces 1283F: DIY Garland
5699 Codeforces 1283E: New Year Parties
5698 Codeforces 1283D: Christmas Trees
5697 Codeforces 1283C: Friends and Gifts
5696 Codeforces 1283B: Candies Division
5695 Codeforces 1283A: Minutes Before the New Year
5694 Codeforces 1282E: The Cake Is a Lie
5693 Codeforces 1282D: Enchanted Artifact
5692 Codeforces 1282C: Petya and Exam
5691 Codeforces 1282B2: K for the Price of One (Hard Version)
5690 Codeforces 1282B1: K for the Price of One (Easy Version)
5689 Codeforces 1282A: Temporarily unavailable
5688 Codeforces 1281B: Azamon Web Services
5687 Codeforces 1281A: Suffix Three
5686 Codeforces 1280F: Intergalactic Sliding Puzzle
5685 Codeforces 1280E: Kirchhoff's Current Loss
5684 Codeforces 1280D: Miss Punyverse
5683 Codeforces 1280C: Jeremy Bearimy
5682 Codeforces 1280B: Beingawesomeism
5681 Codeforces 1280A: Cut and Paste
5680 Codeforces 1279F: New Year and Handle Change
5679 Codeforces 1279E: New Year Permutations
5678 Codeforces 1279D: Santa's Bot
5677 Codeforces 1279C: Stack of Presents
5676 Codeforces 1279B: Verse For Santa
5675 Codeforces 1279A: New Year Garland
5674 Codeforces 1278F: Cards
5673 Codeforces 1278E: Tests for problem D
5672 Codeforces 1278D: Segment Tree
5671 Codeforces 1278C: Berry Jam
5670 Codeforces 1278B: A and B
5669 Codeforces 1278A: Shuffle Hashing
5668 Codeforces 1277D: Let's Play the Words?
5667 Codeforces 1277B: Make Them Odd
5666 Codeforces 1277A: Happy Birthday, Polycarp!
5665 Codeforces 1276F: Asterisk Substrings
5664 Codeforces 1276E: Four Stones
5663 Codeforces 1276D: Tree Elimination
5662 Codeforces 1276C: Beautiful Rectangle
5661 Codeforces 1276B: Two Fairs
5660 Codeforces 1276A: As Simple as One and Two
5659 Codeforces 1275F: Шардирование постов
5658 Codeforces 1275E3: Контрольная сумма
5657 Codeforces 1275E2: Контрольная сумма
5656 Codeforces 1275E1: Контрольная сумма
5655 Codeforces 1275D: Storage2
5654 Codeforces 1275C: #define Задача B ...
5653 Codeforces 1275B: Code Review
5652 Codeforces 1275A: Скрытый друг
5651 Codeforces 1272F: Two Bracket Sequences
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