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📅 最后修改于: 2022-03-11 14:44:46.360000 🧑 作者: Mango
std::set my_set; //inserting element in set my_set.insert(5); my_set.insert(15); my_set.insert(10); my_set.insert(7); //accessing nth element form set int x = *std::next(my_set.begin(), n);