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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)
3100 Codeforces 731B: Coupons and Discounts
3099 Codeforces 731A: Night at the Museum
3098 Codeforces 730L: Expression Queries
3097 Codeforces 730K: Roads Orientation Problem
3096 Codeforces 730J: Bottles
3095 Codeforces 730I: Olympiad in Programming and Sports
3094 Codeforces 730H: Delete Them
3093 Codeforces 730G: Car Repair Shop
3092 Codeforces 730F: Ber Patio
3091 Codeforces 730E: Award Ceremony
3090 Codeforces 730D: Running Over The Bridges
3089 Codeforces 730C: Bulmart
3088 Codeforces 730B: Minimum and Maximum
3087 Codeforces 730A: Toda 2
3086 Codeforces 729F: Financiers Game
3085 Codeforces 729E: Subordinates
3084 Codeforces 729D: Sea Battle
3083 Codeforces 729C: Road to Cinema
3082 Codeforces 729B: Spotlights
3081 Codeforces 729A: Interview with Oleg
3080 Codeforces 727F: Polycarp's problems
3079 Codeforces 727E: Games on a CD
3078 Codeforces 727D: T-shirts Distribution
3077 Codeforces 727C: Guess the Array
3076 Codeforces 727B: Bill Total Value
3075 Codeforces 727A: Transformation: from A to B
3074 Codeforces 725G: Messages on a Tree
3073 Codeforces 725F: Family Photos
3072 Codeforces 725E: Too Much Money
3071 Codeforces 725D: Contest Balloons
3070 Codeforces 725C: Hidden Word
3069 Codeforces 725B: Food on the Plane
3068 Codeforces 725A: Jumping Ball
3067 Codeforces 724G: Xor-matic Number of the Graph
3066 Codeforces 724F: Uniformly Branched Trees
3065 Codeforces 724E: Goods transportation
3064 Codeforces 724D: Dense Subsequence
3063 Codeforces 724C: Ray Tracing
3062 Codeforces 724B: Batch Sort
3061 Codeforces 724A: Checking the Calendar
3060 Codeforces 723F: st-Spanning Tree
3059 Codeforces 723E: One-Way Reform
3058 Codeforces 723D: Lakes in Berland
3057 Codeforces 723C: Polycarp at the Radio
3056 Codeforces 723B: Text Document Analysis
3055 Codeforces 723A: The New Year: Meeting Friends
3054 Codeforces 722F: Cyclic Cipher
3053 Codeforces 722E: Research Rover
3052 Codeforces 722D: Generating Sets
3051 Codeforces 722C: Destroying Array
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