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1399 City Union constructive algorithms dp geometry greedy implementation math Statement E Codeforces Round 854 by cybercats (Div. 1 + Div. 2) {1799} PROGRAMMING 2250.0 Codeforces Round #854 Editorial
21240 Tender Carpenter dp geometry implementation math Statement A Good Bye 2024: 2025 is NEAR {2053} PROGRAMMING 500.0 Good Bye 2024: 2025 is NEAR Editorial