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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)
3950 Codeforces 922E: Birds
3949 Codeforces 922D: Robot Vacuum Cleaner
3948 Codeforces 922C: Cave Painting
3947 Codeforces 922B: Magic Forest
3946 Codeforces 922A: Cloning Toys
3945 Codeforces 92114: Labyrinth-14
3944 Codeforces 92113: Labyrinth-13
3943 Codeforces 92112: Labyrinth-12
3942 Codeforces 92111: Labyrinth-11
3941 Codeforces 92110: Labyrinth-10
3940 Codeforces 92109: Labyrinth-9
3939 Codeforces 92108: Labyrinth-8
3938 Codeforces 92107: Labyrinth-7
3937 Codeforces 92106: Labyrinth-6
3936 Codeforces 92105: Labyrinth-5
3935 Codeforces 92104: Labyrinth-4
3934 Codeforces 92103: Labyrinth-3
3933 Codeforces 92102: Labyrinth-2
3932 Codeforces 92101: Labyrinth-1
3931 Codeforces 920G: List Of Integers
3930 Codeforces 920F: SUM and REPLACE
3929 Codeforces 920E: Connected Components?
3928 Codeforces 920D: Tanks
3927 Codeforces 920C: Swap Adjacent Elements
3926 Codeforces 920B: Tea Queue
3925 Codeforces 920A: Water The Garden
3924 Codeforces 919F: A Game With Numbers
3923 Codeforces 919E: Congruence Equation
3922 Codeforces 919D: Substring
3921 Codeforces 919C: Seat Arrangements
3920 Codeforces 919B: Perfect Number
3919 Codeforces 919A: Supermarket
3918 Codeforces 918B: Radio Station
3917 Codeforces 918A: Eleven
3916 Codeforces 917E: Upside Down
3915 Codeforces 917D: Stranger Trees
3914 Codeforces 917C: Pollywog
3913 Codeforces 917B: MADMAX
3912 Codeforces 917A: The Monster
3911 Codeforces 916E: Jamie and Tree
3910 Codeforces 916D: Jamie and To-do List
3909 Codeforces 916C: Jamie and Interesting Graph
3908 Codeforces 916B: Jamie and Binary Sequence (changed after round)
3907 Codeforces 916A: Jamie and Alarm Snooze
3906 Codeforces 915G: Coprime Arrays
3905 Codeforces 915F: Imbalance Value of a Tree
3904 Codeforces 915E: Physical Education Lessons
3903 Codeforces 915D: Almost Acyclic Graph
3902 Codeforces 915C: Permute Digits
3901 Codeforces 915B: Browser
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