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#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int i;
    int n;
    cin>>n;
    pair<int,int> tab[n+1];
    for (i = 1; i < n+1; i++){
    	cin>>tab[i].first;
    	tab[i].second = i;
    }
    stable_sort(tab+1,tab+n+1);
    int perm[n+1];
    for (i = 1; i < n+1; i++){
    	perm[tab[i].second] = i;
    }
	bool czyzero = 1;
	bool czyjeden = 1;
	for (i = 1; i < n+1; i++){
		if (perm[i] != i) czyzero = 0;
		if (perm[perm[i]] != i) czyjeden = 0;
	}
	if (czyzero){
		cout<<0<<"\n";
		return 0;
	}
	if (czyjeden){
    	cout<<1<<"\n";
    	vector<int> wy1;
    	vector<int> wy2;
    	for (i = 1; i < n+1; i++){
    		if (perm[i] > i){
    			wy1.push_back(i);
    			wy2.push_back(perm[i]);
    		}
    	}
    	reverse(wy2.begin(),wy2.end());
    	for (int j : wy2) wy1.push_back(j);
    	cout<<wy1.size()<<"\n";
    	for (int j : wy1) cout<<j<<" ";
    	cout<<"\n";
    	return 0;
	}
	cout<<2<<"\n";
	bool vis[n+1];
	for (i = 1; i < n+1; i++) vis[i] = 0;
	vector<int> wy1;
	vector<int> wy2;
	for (i = 1; i < n+1; i++){
		if (vis[i]) continue;
		int x = perm[i];
		vector<int> akt;
		while (x != i){
			vis[x] = 1;
			akt.push_back(x);
			x = perm[x];
		}
		for (int j = 0; j < (akt.size())/2; j++){
			wy1.push_back(akt[j]);
			wy2.push_back(akt[akt.size()-1-j]);
		}
	}
	for (i = 0; i < (int)wy1.size(); i++) swap(perm[wy1[i]],perm[wy2[i]]);
	reverse(wy2.begin(),wy2.end());
	cout<<wy1.size()+wy2.size()<<"\n";
	for (int j : wy1) cout<<j<<" ";
	for (int j : wy2) cout<<j<<" ";
	cout<<"\n";
	wy1.clear();
	wy2.clear();
	for (i = 1; i < n+1; i++){
		if (perm[i] > i){
			wy1.push_back(i);
			wy2.push_back(perm[i]);
		}
	}
	reverse(wy2.begin(),wy2.end());
	for (int j : wy2) wy1.push_back(j);
	cout<<wy1.size()<<"\n";
	for (int j : wy1) cout<<j<<" ";
	cout<<"\n";
    return 0;
}