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204 Omkar and Mosaic combinatorics constructive algorithms math Statement I Codeforces Round 749 (Div. 1 + Div. 2, based on Technocup 2022 Elimination Round 1) {1586} PROGRAMMING 4000.0 Editorial for Technocup 2022 — Elimination Round 1 and Codeforces Round #749 (Div. 1+Div. 2)
16211 A-characteristic combinatorics constructive algorithms math Statement A Codeforces Round 868 (Div. 2) {1823} PROGRAMMING 500.0 115465