Codeforces Hello 2025

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Problems AC Note
A. MEX Table
B. Gorilla and the Exam
C. Trip to the Olympiad
D. Gifts Order 线段树
E1. Another Exercise on Graphs (Easy Version) 二分
E2. Another Exercise on Graphs (hard version) 并查集
F. Formation
G. Secret Message
H. Coffee Break
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Good Bye 2024: 2025 is NEAR

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Problems AC Note
A. Tender Carpenter
B. Outstanding Impressionist
C. Bewitching Stargazer
D. Refined Product Optimality 交换
E. Resourceful Caterpillar Sequence game、树上计数
F. Earnest Matrix Complement
G. Naive String Splits
H. Delicate Anti-monotonous Operations
I1. Affectionate Arrays (Easy Version)
I2. Affectionate Arrays (Hard Version)
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