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Over 20,000 problems available: AMC 8/10/12 and AIME problems from 2010-2024; USAJMO/USAMO problems from 2002-2024; USACO problems from 2014 to 2024 (all divisions); all Codeforces, AtCoder and DMOJ problems. If you leave the search field blank, it returns all problems with the specified type.

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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
  • DMOJ: DMOJ [contest name (if applicable)] [problem number (e.g. P1)] - [Problem name], Ex: DMOJ Yet Another Contest 3 P1 - Shell Swap Scam
  • 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)
1500 Codeforces 337C: Quiz
1499 Codeforces 337B: Routine Problem
1498 Codeforces 337A: Puzzles
1497 Codeforces 336E: Vasily the Bear and Painting Square
1496 Codeforces 336D: Vasily the Bear and Beautiful Strings
1495 Codeforces 336C: Vasily the Bear and Sequence
1494 Codeforces 336B: Vasily the Bear and Fly
1493 Codeforces 336A: Vasily the Bear and Triangle
1492 Codeforces 335F: Buy One, Get One Free
1491 Codeforces 335E: Counting Skyscrapers
1490 Codeforces 335D: Rectangles and Square
1489 Codeforces 335C: More Reclamation
1488 Codeforces 335B: Palindrome
1487 Codeforces 335A: Banana
1486 Codeforces 334B: Eight Point Sets
1485 Codeforces 334A: Candy Bags
1484 Codeforces 333E: Summer Earnings
1483 Codeforces 333D: Characteristics of Rectangles
1482 Codeforces 333C: Lucky Tickets
1481 Codeforces 333B: Chips
1480 Codeforces 333A: Secrets
1479 Codeforces 332E: Binary Key
1478 Codeforces 332D: Theft of Blueprints
1477 Codeforces 332C: Students' Revenge
1476 Codeforces 332B: Maximum Absurdity
1475 Codeforces 332A: Down the Hatch!
1474 Codeforces 331E2: Deja Vu
1473 Codeforces 331E1: Deja Vu
1472 Codeforces 331D3: Escaping on Beaveractor
1471 Codeforces 331D2: Escaping on Beaveractor
1470 Codeforces 331D1: Escaping on Beaveractor
1469 Codeforces 331C3: The Great Julya Calendar
1468 Codeforces 331C2: The Great Julya Calendar
1467 Codeforces 331C1: The Great Julya Calendar
1466 Codeforces 331B2: Shave Beaver!
1465 Codeforces 331B1: Shave Beaver!
1464 Codeforces 331A2: Oh Sweet Beaverette
1463 Codeforces 331A1: Oh Sweet Beaverette
1462 Codeforces 330B: Road Construction
1461 Codeforces 330A: Cakeminator
1460 Codeforces 329E: Evil
1459 Codeforces 329D: The Evil Temple and the Moving Rocks
1458 Codeforces 329C: Graph Reconstruction
1457 Codeforces 329B: Biridian Forest
1456 Codeforces 329A: Purification
1455 Codeforces 328B: Sheldon and Ice Pieces
1454 Codeforces 328A: IQ Test
1453 Codeforces 327E: Axis Walking
1452 Codeforces 327D: Block Tower
1451 Codeforces 327C: Magic Five
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