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#include<bits/stdc++.h>
using namespace std;
vector<pair<int,int>>v;
int tab[3006],idtab[3006];
deque<int>d;
vector<deque<int>>vd;
int check(int n)
{
   int a=0;
   for(int i=1;i<=n;i++)
   {
      //cout<<tab[i]<<" ";
      if(tab[i]!=i)
      {
         if(tab[tab[i]]==i&&a!=2)a=1;
         else a=2;
      }
   }
   return a;
}
void f2(int n)
{
   for(int i=1;i<=n;i++)
   {
      if(tab[i]!=i)
      {
         int j=tab[i];
         int a=tab[i],b=tab[j];
         tab[j]=a;tab[i]=b;
         d.push_front(i);
         d.push_back(j);
      }
   }
   vd.push_back(d);
}
bool vis[3006];
bool cycle(int id,int n)
{
   int len=1;
   int j=id;
   while(tab[j]!=id)
   {
      len++;
      j=tab[j];
   }

   j=id;
   int l;
   //if(len%2==0)l=len/2;
   //else l=len/2 -1;
   l=len/2;
   int p1=id,p2=id,ll=0;
   //cout<<len<<" "<<l<<" l<=   \n";
   while(1)
   {
      int j2=tab[j];
      for(int i=1;i<=l;i++)
      {
          //cout<<j<<" "<<j2<<" "<<id<<" id\n";
         if(vis[j]==0&&vis[j2]==0&&i>ll)
         {
            //cout<<j<<" "<<j2<<" "<<id<<" id\n";
            p1=j;
            p2=j2;
            ll=i;
         }
         j2=tab[j2];
      }
      j=tab[j];
      if(j==id)break;
   }
   if(ll==0)return 0;
   //cout<<p1<<" "<<p2<<" pp     "<<" ll\n";
   int a=tab[p1],b=tab[p2];
   tab[p1]=b;tab[p2]=a;
   d.push_back(p2);//
   d.push_front(p1);///
   vis[p2]=vis[p1]=1;
   return 1;
}
int res(int n)
{
   int c=check(n);
   if(c==0)return 0;
   if(c==1)
   {
      f2(n);
      return 1;
   }
  c=0;
  int ans=0;
   while(1)
   {
      for(int i=1;i<=n;i++)
      {
         if(tab[i]!=i&&tab[tab[i]]!=i&&vis[i]==0)
         {
            if(cycle(i,n)==1)c=1;
         }
      }
      if(c==0)
      {
         vd.push_back(d);
         ans++;
         if(check(n)<2)break;
         memset(vis,0,sizeof vis);
         d.clear();
      }
      c=0;
   }
   d.clear();
   f2(n);
   return ans+1;
}
int main()
{
   ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
   int n;cin>>n;
   for(int i=1;i<=n;i++)
   {
      int h;cin>>h;
      v.push_back({h,i});
   }
   sort(v.begin(),v.end());
   int id=1;
   for(auto it:v)
   {
      tab[it.second]=id;
      idtab[id]=it.second;
      id++;
   }
   int ans=check(n);
   if(ans==0)cout<<0<<"\n";
   else if(ans==1)
   {
      f2(n);
      cout<<1<<"\n"<<d.size()<<"\n";
      while(d.size())
      {
         cout<<d.front()<<" ";
         d.pop_front();
      }
      cout<<"\n";
   }
   else
   {
      cout<<res(n)<<"\n";
      for(int i=0;i<vd.size();i++)
      {
         cout<<vd[i].size()<<"\n";
         while(vd[i].size()>0)
         {
            cout<<vd[i].front()<<" ";
            vd[i].pop_front();
         }
         cout<<"\n";
      }
   }

}