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#include <iostream>
#include <vector>
#include <algorithm>
#include <list>

struct Person
{
	int height;
	int index;
	int round = 0;

	bool operator<(const Person& rhs)
	{
		return height < rhs.height;
	}

	friend std::ostream& operator<<(std::ostream& stream, const Person& person)
	{
		stream << person.height << " " << person.index + 1;
		return stream;
	}
};



int main()
{
	std::ios_base::sync_with_stdio(false);
	std::cin.tie(nullptr);

	int n;
	std::cin >> n;

	std::vector<Person> pepole;
	pepole.resize(n);
	for (int i = 0; i < n; ++i)
	{
		std::cin >> pepole[i].height;
		pepole[i].index = i;
	}

	std::vector<Person> sorted = pepole;
	std::sort(sorted.begin(), sorted.end());

	for (int i = 0; i < sorted.size(); ++i)
	{
		pepole[sorted[i].index].index = i;
	}

	// for (auto& person : pepole)
	// {
	// 	std::cout << person << std::endl;
	// }
	// std::cout << std::endl << "-----" << std::endl;

	std::list<std::vector<std::pair<int,int>>> rounds;
	bool finished = false;
	int current_round = 0;
	while (!finished)
	{
		std::vector<std::pair<int,int>> round;
		round.reserve(pepole.size());

		finished = true;
		++current_round;
		int i = 0;
		for (auto& person : pepole)
		{
			if (person.index == i || person.round == current_round || pepole[person.index].round == current_round)
			{
				++i;
				continue;
			}

			person.round = current_round;
			pepole[person.index].round = current_round;

			//std::cout << "swap " << current_round << " " << i + 1 << " " << person.index + 1 << std::endl;

			round.emplace_back(std::make_pair(person.index + 1, i + 1));

			int temp = person.index;
			person.index =  pepole[temp].index;
			pepole[temp].index = temp;

			if (person.index != i)
			{
				//std::cout << "mis " << person.index + 1 << " " << i + 1 << std::endl;
				finished = false;
			}

			++i;
		}

		if (round.size() == 0)
		{
			std::cout << "0" << std::endl;
			return 0;
		}
		rounds.emplace_back(std::move(round));
		//break;
	}

	std::cout << rounds.size() << std::endl;
	for (auto round : rounds)
	{
		std::cout << round.size() * 2 << std::endl;
		for (int i = 0; i < round.size(); ++i)
		{
			std::cout << round[i].first << " ";
		}
		for (int i = round.size() - 1; i >= 0; --i)
		{
			std::cout << round[i].second << " ";
		}
		std::cout << std::endl;
	}


	return 0;
}

/*

1670 4
2011 5
1560 3
1232 1
1447 2

*/