Codeforces Round 1082 (Div. 1) A1. Lost Civilization (Easy Version) Hints: Lost Civilization (Easy Version) Code: Lost Civilization (Easy Version) A2. Lost Civilization (Hard Version) Hints: Lost Civilization (Hard Version) Code: Lost Civilization (Hard Version) C. Rigged Bracket Sequence Hints: Rigged Bracket Sequence Code: Rigged Bracket Sequence
