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#include <stdio.h>
#include <time.h>
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <map> 
#include <string>
#include <vector>  
#include <iostream> 
#include <sstream> 
#include <queue>
#include <algorithm>
#include <assert.h>


using namespace std;

#define ll long long
#define PB 		push_back
#define FOR(a,start,end) 	for(int a=int(start); a<int(end); a++)
#define INF 		INT_MAX
#define SORT(a) 	sort(a.begin(),a.end()) 
#define CL(a,x) 		memset(a,x,sizeof(a))
#define REP(a,x)	for(int a=0;a<x;a++)
#define REP1(a,x)	for(int a=1;a<=x;a++)
#define MP 		make_pair



typedef vector<ll>     vi;
typedef pair<ll, ll>     pii;
typedef vector<string> vs;
typedef vector<pii> vii;
typedef vector<vector<ll> > vvi;
typedef vector<vector<string> > vvs;
typedef vector<pair<string, string> > vss;
typedef pair<string, string> pss;
typedef pair<ll, pii> ppii;
typedef vector<ppii> vppii;
typedef vector<vector<pii> > vvii;
typedef vector<vvi> vvvi;


ll  n, k, q, d, r, g, b, z, p, a, c;
char zn;

string wa;
vi vk, va, vk1, vk2;
vii vkx;
vvi vvk;
vector<bool> vb;
bool ok() {
	for (int i = 0; i < n; i++)
		if (i!=vkx[i].second)
			return false;
	return true;
}
int bs(ll a) {
	int i1 = 0;
	int i2 = n - 1;
	int i0 = (i1 + i2) / 2;
	while (i2 - i1 > 1) {
		if (vkx[i0].first < a)
			i1 = i0;
		else if (vkx[i0].first > a)
			i2 = i0;
		else
			return i0;
		i0 = (i1 + i2) / 2;
	}
	if (vkx[i1].first == a)
		return i1;
	return i2;

}
vii genp() {
	vii vpx;
	vpx.clear();
	vb.assign(n, false);
	for (int i = 0; i < n; i++) {
		if (vb[i])
			continue;
		if (vkx[i].second == i) {
			vb[i] = true;
		}
		else {
			if (vb[vkx[i].second])
				continue;
			if (vkx[vkx[i].second].second == i) {
				vpx.push_back(MP(i, vkx[i].second));
				vb[i] = true;
				vb[vkx[i].second] = true;
			}
		}
	}
	for (int i = 0; i < n; i++) {
		if (!vb[i]) {
			if (vb[vkx[i].second])
				continue;
			int a = i;
			int b = vkx[i].second;
			while (a >= 0) {
				vpx.push_back(MP(a, b));
				vb[a] = true;
				vb[b] = true;
				
				a = bs(vk[a]);
				b = vkx[b].second;
				
				if (vb[a])
					a = -1;
				if (vb[b])
					a = -1;
				if (a == b)
					a = -1;
			}
		}

	}
	return vpx;
}
int main() {
	//freopen("c:\\wojtek\\uva\\pa\\debug\\tes.in", "rt", stdin);
	//d = 1000000007;

	//while (1) {

	cin >> n;
	vkx.assign(n, MP(0,0));
	
	vk.assign(n, 0);
	for (int i = 0; i < n; i++) {
		cin >> vkx[i].first;
		vk[i] = vkx[i].first;
		vkx[i].second = i;
	}
	SORT(vkx);
	z = 0;
	vvk.clear();
	while (!ok()) {
		vii vpx = genp();
		va.clear();
		for (int i = 0; i < (int)vpx.size(); i++) {
			va.push_back(vpx[i].first);
		}
		for (int i = (int)vpx.size()-1; i >=0; i--) {
			va.push_back(vpx[i].second);
		}
		vvk.push_back(va);
		for (int i = 0; i < (int)vpx.size(); i++) {
			int a = vk[vpx[i].first];
			vk[vpx[i].first] = vk[vpx[i].second];
			vk[vpx[i].second] = a;
		}
		for (int i = 0; i < n; i++) {
			vkx[i] = MP(vk[i], i);
		}
		SORT(vkx);
	}
	cout << (int)vvk.size() << "\n";
	for (int i = 0; i < (int)vvk.size(); i++) {
		cout << (int)vvk[i].size() << "\n";
		for (int j = 0; j < (int)vvk[i].size(); j++) {
			cout << vvk[i][j] + 1 << " ";
		}
		cout << "\n";
	}
	


	// }

	return 0;

}