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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)
6900 Codeforces 1517C: Fillomino 2
6899 Codeforces 1517B: Morning Jogging
6898 Codeforces 1517A: Sum of 2050
6897 Codeforces 1516E: Baby Ehab Plays with Permutations
6896 Codeforces 1516D: Cut
6895 Codeforces 1516C: Baby Ehab Partitions Again
6894 Codeforces 1516B: AGAGA XOOORRR
6893 Codeforces 1516A: Tit for Tat
6892 Codeforces 1515I: Phoenix and Diamonds
6891 Codeforces 1515H: Phoenix and Bits
6890 Codeforces 1515G: Phoenix and Odometers
6889 Codeforces 1515F: Phoenix and Earthquake
6888 Codeforces 1515E: Phoenix and Computers
6887 Codeforces 1515D: Phoenix and Socks
6886 Codeforces 1515C: Phoenix and Towers
6885 Codeforces 1515B: Phoenix and Puzzle
6884 Codeforces 1515A: Phoenix and Gold
6883 Codeforces 1514E: Baby Ehab's Hyper Apartment
6882 Codeforces 1514D: Cut and Stick
6881 Codeforces 1514C: Product 1 Modulo N
6880 Codeforces 1514B: AND 0, Sum Big
6879 Codeforces 1514A: Perfectly Imperfect Array
6878 Codeforces 1513F: Swapping Problem
6877 Codeforces 1513E: Cost Equilibrium
6876 Codeforces 1513D: GCD and MST
6875 Codeforces 1513C: Add One
6874 Codeforces 1513B: AND Sequences
6873 Codeforces 1513A: Array and Peaks
6872 Codeforces 1512G: Short Task
6871 Codeforces 1512F: Education
6870 Codeforces 1512E: Permutation by Sum
6869 Codeforces 1512D: Corrupted Array
6868 Codeforces 1512C: A-B Palindrome
6867 Codeforces 1512B: Almost Rectangle
6866 Codeforces 1512A: Spy Detected!
6865 Codeforces 1511G: Chips on a Board
6864 Codeforces 1511F: Chainword
6863 Codeforces 1511E: Colorings and Dominoes
6862 Codeforces 1511D: Min Cost String
6861 Codeforces 1511C: Yet Another Card Deck
6860 Codeforces 1511B: GCD Length
6859 Codeforces 1511A: Review Site
6858 Codeforces 1510K: King's Task
6857 Codeforces 1510J: Japanese Game
6856 Codeforces 1510I: Is It Rated?
6855 Codeforces 1510H: Hard Optimization
6854 Codeforces 1510G: Guide
6853 Codeforces 1510F: Fiber Shape
6852 Codeforces 1510E: Equilibrium Point /\textbackslash/\textbackslash
6851 Codeforces 1510D: Digits
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