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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)
18505 DMOJ Mock CCC '22 2 S3 - Kaguya Wants to Analyze the Academy Anthem
18504 DMOJ Mock CCC '22 2 S2 - Kaguya Wants to Grow the Student Council
18503 DMOJ Mock CCC '22 2 S1 - Kaguya Wants to Let Ishigami Pass
18502 DMOJ ICPC NAQ 2016 L - Unusual Darts
18501 DMOJ ICPC NAQ 2016 K - Robotopia
18500 DMOJ ICPC NAQ 2016 J - Quick Estimates
18499 DMOJ ICPC NAQ 2016 I - Primonimo
18498 DMOJ ICPC NAQ 2016 H - Nine Packs
18497 DMOJ ICPC NAQ 2016 G - Inverse Factorial
18496 DMOJ ICPC NAQ 2016 F - Free Desserts
18495 DMOJ ICPC NAQ 2016 E - Dots and Boxes
18494 DMOJ ICPC NAQ 2016 D - Brackets
18493 DMOJ ICPC NAQ 2016 C - Big Truck
18492 DMOJ ICPC NAQ 2016 B - Arcade!
18491 DMOJ ICPC NAQ 2016 A - A New Alphabet
18490 DMOJ ICPC NAQ 2015 G - Safe Passage
18489 DMOJ ICPC NAQ 2015 F - Quick Brown Fox
18488 DMOJ ICPC NAQ 2015 A - All About That Base
18487 DMOJ Mynerva
18486 DMOJ MWC '15 #8 P3: Draw Down
18485 DMOJ MWC '15 #8 P2: ASCII Art
18484 DMOJ MWC '15 #8 P1: Push-up Contest
18483 DMOJ MWC '15 #7 P3: Blue and Green
18482 DMOJ MWC '15 #7 P2: Thief in the Night
18481 DMOJ MWC '15 #7 P1: Sequences
18480 DMOJ MWC '15 #6 P3: Magical Sets
18479 DMOJ MWC '15 #6 P2: Breadwinners
18478 DMOJ MWC '15 #6 P1: Regpo
18477 DMOJ MWC '15 #5 P3: French Words
18476 DMOJ MWC '15 #5 P2: WildCard
18475 DMOJ MWC '15 #5 P1: Stats
18474 DMOJ MWC '15 #4 P5: Arts and Crafts
18473 DMOJ MWC '15 #4 P4: Dealing with Knots
18472 DMOJ MWC '15 #4 P3: Salt
18471 DMOJ MWC '15 #4 P2: Data Formatting
18470 DMOJ MWC '15 #4 P1: Love Guru 2
18469 DMOJ MWC '15 #3 P3: Bad News
18468 DMOJ MWC '15 #3 P2: Mechanical Pencils
18467 DMOJ MWC '15 #3 P1: Challenger Promos
18466 DMOJ MWC '15 #2 P5: Watchmeblink1
18465 DMOJ MWC '15 #2 P4: Robotics Summative
18464 DMOJ MWC '15 #2 P3: Breaking Ice
18463 DMOJ MWC '15 #2 P2: Towering Towers
18462 DMOJ MWC '15 #2 P1: Symmetry
18461 DMOJ MWC '15 #1 P5: Love Guru
18460 DMOJ MWC '15 #1 P4: Genetic Probability
18459 DMOJ MWC '15 #1 P3: Dolls
18458 DMOJ MWC '15 #1 P2: Postcard
18457 DMOJ MWC '15 #1 P1: Playlist Panic
18456 DMOJ Dream and the Multiverse
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