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#include <bits/stdc++.h>

using namespace std;

bool check(vector<int> heigh){
    for(int i=1 ;i< heigh.size() ;i++){
        if(heigh[i-1]>heigh[i]){
            return false;
        }
    }
    return true;
}

int main(){
    long long n;
    cin>>n;
    vector<int> heigh(n);
    vector<int> sorted(n);
    vector<int> zlicz(3003, -1);
    for(auto &a : heigh){
        cin>>a;
    }
    for(int i=0; i<n; i++){
        sorted[i]=heigh[i];
    }
    sort(sorted.begin(), sorted.end());
    //reverse(sorted.begin(), sorted.end());
    for(int i=0; i<n; i++){
        zlicz[sorted[i]]=i;
    }
   
 //   return 0;
 vector<string> output1, output2;
 int it=0;
    while(!check(heigh)){
        vector<int> resb;
        vector<int> rese;
        vector<int> vis(n);
        for(int i=0; i<n; i++){
            
            if(vis[i]==false && vis[zlicz[heigh[i]]]==false && zlicz[heigh[i]]!=i){
                resb.push_back(i);
                rese.push_back(zlicz[heigh[i]]);
                vis[zlicz[heigh[i]]]=true;
                vis[i]=true;
            }
        }
        output1.push_back(to_string(resb.size()*2));
        output2.push_back("");
        for(int i=0; i<resb.size(); i++){
            int tmp=resb[i]+1;
            output2[it]+=to_string(tmp)+" ";
        }
        for(int i=rese.size()-1; i>=0 ;i--){
            int tmp=rese[i]+1;
            output2[it]+=to_string(tmp)+" ";
        }
        for(int i=0 ;i<rese.size(); i++){
            swap(heigh[resb[i]], heigh[rese[i]]);
        }
       it++; 
    }  
    cout<<output1.size()<<endl;
    for(int i=0; i<output1.size(); i++){
        cout<<output1[i]<<endl;
        cout<<output2[i]<<endl;
    }
    return 0;
}