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#include<bits/stdc++.h>
 
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("trapv")
 
#define st first
#define nd second
#define pb push_back
#define pp pop_back
#define eb emplace_back
#define mp(a, b) make_pair(a, b)
#define all(x) (x).begin(), (x).end()
#define rev(x) reverse(all(x))
#define sor(x) sort(all(x))
#define sz(x) (int)(x).size()
#define rsz(x) resize(x)
 
using namespace std;
 
///~~~~~~~~~~~~~~~~~~~~~~~~~~
 
template <typename H, typename T> 
ostream& operator<<(ostream& os, pair<H, T> m){
	return os <<"("<< m.st<<", "<<m.nd<<")";
}
template <typename H> 
ostream& operator<<(ostream& os, vector<H> V){
	os<<"{";
	for(int i=0; i<V.size(); i++){
		if(i)os<<" ";
		os<<V[i];
	}
	os<<"}";
	return os;
}
 
void debug(){cerr<<"\n";}
template <typename H, typename... T>
void debug(H h, T... t) {cerr<<h; if (sizeof...(t)) cerr << ", "; debug(t...);}
#define deb(x...) cerr<<#x<<" = ";debug(x);
 
///~~~~~~~~~~~~~~~~~~~~~~~~~
 
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<pii > vii;
typedef vector<ll> vl;
typedef vector<pll> vll;
typedef string str;
 
#define BOOST ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
 
mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());
 
const int N=2e5+5, INF=1e9+5, mod=1e9+7;

int main(){
	//BOOST;
	vector<vi> ans;
	int n;
	cin>>n;
	vii V(n);
	for(int i=0; i<n; i++)cin>>V[i].st, V[i].nd=i;
	sor(V);
	for(int i=0; i<n; i++)V[i].st=i, swap(V[i].st, V[i].nd);
	sor(V);
	while(true){
		vi V2, V3;
		vi vis(n);
		for(int i=0; i<n; i++){
			if(!vis[i]){
				vector<int> VV;
				VV.pb(i);
				while(V[VV.back()].nd!=i){
					VV.pb(V[VV.back()].nd);
				}
				for(int i:VV)vis[i]=1;
				for(int i=0; i<VV.size()/2; i++){
					V2.pb(VV[i]);
					V3.pb(VV[VV.size()-i-1]);
				}
			}
		}
		if(!V2.size())break;
		for(int i=0; i<V2.size(); i++){
			swap(V[V2[i]].nd, V[V3[i]].nd);
		}
		//deb(V2, V3);
		ans.pb({});
		for(int i:V2)ans.back().pb(i);
			rev(V3);
		for(int i:V3)ans.back().pb(i);
	}
	cout<<ans.size()<<"\n";
	for (auto VV:ans){
		cout<<VV.size()<<"\n";
		for(int i:VV)cout<<i+1<<" ";
			cout<<"\n";
	}
}