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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)
1750 Codeforces 397B: On Corruption and Numbers
1749 Codeforces 397A: On Segment's Own Points
1748 Codeforces 396E: On Iteration of One Well-Known Function
1747 Codeforces 396D: On Sum of Number of Inversions in Permutations
1746 Codeforces 396C: On Changing Tree
1745 Codeforces 396B: On Sum of Fractions
1744 Codeforces 396A: On Number of Decompositions into Multipliers
1743 Codeforces 394E: Lightbulb for Minister
1742 Codeforces 394D: Physical Education and Buns
1741 Codeforces 394C: Dominoes
1740 Codeforces 394B: Very Beautiful Number
1739 Codeforces 394A: Counting Sticks
1738 Codeforces 393B: Three matrices
1737 Codeforces 393A: Nineteen
1736 Codeforces 392E: Deleting Substrings
1735 Codeforces 392D: Three Arrays
1734 Codeforces 392C: Yet Another Number Sequence
1733 Codeforces 392B: Tower of Hanoi
1732 Codeforces 392A: Blocked Points
1731 Codeforces 391F3: Stock Trading
1730 Codeforces 391F2: Stock Trading
1729 Codeforces 391F1: Stock Trading
1728 Codeforces 391E2: Three Trees
1727 Codeforces 391E1: Three Trees
1726 Codeforces 391D2: Supercollider
1725 Codeforces 391D1: Supercollider
1724 Codeforces 391C3: The Tournament
1723 Codeforces 391C2: The Tournament
1722 Codeforces 391C1: The Tournament
1721 Codeforces 391B: Word Folding
1720 Codeforces 391A: Genetic Engineering
1719 Codeforces 390E: Inna and Large Sweet Matrix
1718 Codeforces 390D: Inna and Sweet Matrix
1717 Codeforces 390C: Inna and Candy Boxes
1716 Codeforces 390B: Inna, Dima and Song
1715 Codeforces 390A: Inna and Alarm Clock
1714 Codeforces 389B: Fox and Cross
1713 Codeforces 389A: Fox and Number Game
1712 Codeforces 388E: Fox and Meteor Shower
1711 Codeforces 388D: Fox and Perfect Sets
1710 Codeforces 388C: Fox and Card Game
1709 Codeforces 388B: Fox and Minimal path
1708 Codeforces 388A: Fox and Box Accumulation
1707 Codeforces 387E: George and Cards
1706 Codeforces 387D: George and Interesting Graph
1705 Codeforces 387C: George and Number
1704 Codeforces 387B: George and Round
1703 Codeforces 387A: George and Sleep
1702 Codeforces 386D: Game with Points
1701 Codeforces 386C: Diverse Substrings
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