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#include <bits/stdc++.h>
using namespace std;
int n,x,licznik,rundy;
bool odw[3007];
vector <pair<int, int> > v;

stack <int> koniec[3007];
queue <int> poczatek[3007];

void rucham_ci_matke(int x, int y){
    if(x==y){
        return;
    }
    //cout<<x<<" AAA "<<y<<endl;
    // y indeks dobrej zmiennej, x indeks zmiennej do wydłużenia
    if(odw[v[x].second] == 0 && odw[v[y].second] == 0){
        //cout<<x<<" "<<y<<" YYY "<<endl;
        //cout<<v[x].second+1<<" ZZZ "<<v[y].second+1<<endl;
        int temp, temp2;
        for(int i=0; i<v.size();i++)
        {
            if(v[i].second==x)
                temp = i;
        }
        for(int i=0;i<v.size();i++)
        {
            //cout<<v[i].second+1<<" "<<i<<"\n";
            if(v[y].second==i)
                temp2 = i;
        }
        //cout<<y <<"ASDA"<<v[y].second<<"\n";
        poczatek[rundy].push(v[x].second);
        koniec[rundy].push(v[y].second);
        swap(v[x].second, v[y].second);
        odw[v[x].second] = 1;
        odw[v[y].second] = 1;
        rucham_ci_matke(temp, temp2);
    }
}

//indeks kolejnosci, indeks realny
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>x;
        v.push_back({x,i});
    }
    sort(v.begin(), v.end());
    //cout<<v[0].second+1<<" "<<v[0].first<<endl;
    while(licznik!=n){
        licznik = 0;
        ++rundy;
        for(int i=0;i<v.size();++i){
            /*for(int j=0;j<v.size();++j){
                cout<<v[j].second+1<<" ";
            }
            cout<<endl;*/
            if(v[i].second == i){
                ++licznik;
            }
            if(v[i].second != i){
                if(odw[v[i].second] == 0){
                    rucham_ci_matke(i, v[i].second);
                }
            }
        }
        for(int i=0;i<=3001;++i){
            odw[i] = 0;
        }
    }
    cout<<rundy-1<<endl;
    for(int i=1;i<=rundy-1;++i){
        cout<<koniec[i].size() * 2<<endl;
        while(!poczatek[i].empty()){
            cout<<poczatek[i].front()+1<<" ";
            poczatek[i].pop();
        }
        while(!koniec[i].empty()){
            cout<<koniec[i].top()+1<<" ";
            koniec[i].pop();
        }
        cout<<endl;
    }

}