view plaincopy to clipboardprint?·········10········20········30········40········50········60········70········80········90········100·······110·······120·······130·······140·······150 从放暑假前周sir给我讲了一个用polya计数法和burnside定理做的题目（pku2409）后，突然觉得组合数学挺有意思，
算法/数据结构
2023-11-11
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