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#include <bits/stdc++.h> //Michał Kuśmirek
using namespace std;     //XIII LO Szczecin

#define FOR(i, a, b) for(int i = (a); i <= (b); ++i)
#define REP(i, n) for(int i = 0; i < (n); ++i)

template<class T> int size(T && a) {
	return (int)(a.size());
}
ostream& operator << (ostream &os, string str) {
    for(char c : str) os << c;
    return os;
}
template <class A, class B> ostream& operator << (ostream &os, const pair<A, B> &p) {
	return os << '(' << p.first << "," << p.second << ')';
}
template <class T> auto operator << (ostream &os, T &&x) -> decltype(x.begin(), os) {
	os << '{';
	for(auto it = x.begin(); it != x.end(); ++it)
		os << *it << (it == prev(x.end()) ? "" : " ");
	return os << '}';
}
template <class T> ostream& operator << (ostream &os, vector<vector<T>> vec) {
    for(auto x : vec)
    	os << "\n  " << x;
    return os;
}
void dump() {}
template <class T, class... Args> void dump(T &&x, Args... args) {
    cerr << x << "; ";
    dump(args...);
}
#ifdef DEBUG
# define debug(x...) cerr << "[" #x "]: ", dump(x), cerr << '\n'
#else 
# define debug(...) 0
#endif

//--------------------------------------------------

bool check(vector<vector<int>> shifts, vector<int> a) {
	vector<int> sorted = a;
	sort(sorted.begin(), sorted.end());

	for(vector<int> vec : shifts) {
		set<int> S;
		vector<int> values;
		for(int x : vec) {
			values.emplace_back(a[x]);
			S.insert(x);
		}
		reverse(values.begin(), values.end());

		REP(i, size(vec)) 
			a[vec[i]] = values[i];
		assert(size(S) == size(vec));
	}

	return a == sorted;
}

vector<int> scale(vector<int> a) {
	int n = size(a);
	vector<pair<int, int>> sorted(n);
	REP(i, n)
		sorted[i] = pair(a[i], i);
	sort(sorted.begin(), sorted.end());
	vector<int> ret(n);
	REP(i, n)
		ret[sorted[i].second] = i;
	return ret;
}

vector<int> create_round(const vector<int> &a) {
	int n = size(a);
	vector<bool> visited(n);
	vector<vector<int>> cycles;
	REP(i, n) if(!visited[i]) {
		int cur = i;
		cycles.push_back({});
		while(!visited[cur]) {
			visited[cur] = true;
			cycles.back().emplace_back(cur);
			cur = a[cur];
		}
	}

	debug(cycles);

	vector<int> round;
	for(vector<int> cycle : cycles) {
		int len = size(cycle);
		REP(i, len / 2)
			round.emplace_back(cycle[i]);
	}

	reverse(cycles.begin(), cycles.end());
	for(vector<int> cycle : cycles) {
		int len = size(cycle);
		FOR(i, len - len / 2, len - 1)
			round.emplace_back(cycle[i]);
	}

	return round;
}

void make_swaps(vector<int> &a, vector<int> round) {
	int n = size(round);
	REP(i, n / 2) 
		swap(a[round[i]], a[round[n - 1 - i]]);
}

bool sorted(const vector<int> &a) {
	vector<int> temp = a;
	sort(temp.begin(), temp.end());
	return a == temp;
}

int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	int n; cin >> n;

	vector<int> input(n);
	REP(i, n)
		cin >> input[i];

	vector<int> a = scale(input);
	debug(a);

	vector<vector<int>> answer;
	while(!sorted(a)) {
		vector<int> round = create_round(a);
		answer.emplace_back(round);
		make_swaps(a, round);
		debug(round);
		debug(a);
	}

	cout << size(answer) << '\n';
	for(vector<int> round : answer) {
		cout << size(round) << '\n';
		for(int x : round)
			cout << x + 1 << ' ';
		cout << '\n';
	}
}