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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)
19105 DMOJ STNBD P3 - Rinslet Laurenfrost
19104 DMOJ STNBD P2 - Claire Elstein
19103 DMOJ STNBD P1 - Ren Ashbell
19102 DMOJ The DMOJ Driveway
19101 DMOJ Single Source Shortest Path
19100 DMOJ Secret Santa
19099 DMOJ Coding Spree
19098 DMOJ Bane of Arthropods
19097 DMOJ Special Relativity
19096 DMOJ Bob and Special Mud
19095 DMOJ Bubble Sort
19094 DMOJ SMAC 08/09 (Nov) #5 - Intelligent Stats
19093 DMOJ SMAC 08/09 (Nov) #4 - Infinite Degrees
19092 DMOJ SMAC 08/09 (Nov) #3 - Factor Game
19091 DMOJ SMAC 08/09 (Nov) #2 - Stock Market II
19090 DMOJ SMAC 08/09 (Nov) #1 - Befungulator
19089 DMOJ SMAC 08/09 (Oct) #5 - Crossroads
19088 DMOJ SMAC 08/09 (Oct) #4 - Daycare
19087 DMOJ SMAC 08/09 (Oct) #3 - Jumpscotch
19086 DMOJ SMAC 08/09 (Oct) #2 - Digging for Gold
19085 DMOJ SMAC 08/09 (Oct) #1 - Eliminanagram
19084 DMOJ Sleigh Ride
19083 DMOJ Skyscrapers
19082 DMOJ A Simple Game
19081 DMOJ Summer Institute '17 Contest 3 P5 - Balanced Cycles
19080 DMOJ Summer Institute '17 Contest 3 P4 - Customs
19079 DMOJ Summer Institute '17 Contest 1 P9 - Safe Square
19078 DMOJ Summer Institute '17 Contest 1 P8 - Mo' Money
19077 DMOJ Summer Institute '17 Contest 1 P7 - Grand Theft Otto
19076 DMOJ Summer Institute '17 Contest 1 P6 - Fortunate Farmland
19075 DMOJ Summer Institute '17 Contest 1 P5 - Crazy Math
19074 DMOJ Summer Institute '17 Contest 1 P4 - Clips of Video
19073 DMOJ Summer Institute '17 Contest 1 P3 - CEO Queue
19072 DMOJ Summer Institute '17 Contest 1 P2 - Bernard
19071 DMOJ Summer Institute '17 Contest 1 P10 - Trading Cards
19070 DMOJ Summer Institute '17 Contest 1 P1 - Ant Clans
19069 DMOJ Python Infinite Loop
19068 DMOJ SGS Programming Challenge P5 - Tree After School
19067 DMOJ SGS Programming Challenge P4 - Toy in Psychology Class
19066 DMOJ SGS Programming Challenge P3 - Tree in Biology Class
19065 DMOJ SGS Programming Challenge P2 - Vending Machine in Lunch
19064 DMOJ SGS Programming Challenge P1 - XOR in Computer Class
19063 DMOJ Unique Elements
19062 DMOJ Creating a Sequence
19061 DMOJ Jason's Theorem
19060 DMOJ Summing A Sequence
19059 DMOJ Geometric Sequence
19058 DMOJ Dynamic Range Minimum Test
19057 DMOJ Touching Segments
19056 DMOJ The Cosmic Era P5 - GENESIS
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