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#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

bool sortByFirst(const pair<int,int> &a,
              const pair<int,int> &b) {
          	return a.first < b.first;
}

vector<int> reverseVectorFull(vector<int> v) {
	int i = 0, j = v.size() - 1, tmp;
	while (i < j) {
		tmp = v[i];
		v[i] = v[j];
		v[j] = tmp;
		i++;
		j--;
	}
	
	
	// for (int i = 0; i < v.size(); i++) {
	// 	cout << v[i] << " ";
	// }
	// cout << endl;
	
	return v;
}

vector<int> reverseVector(vector<int> v) {
	int i = 0, j = v.size() - 2, tmp;
	while (i < j) {
		tmp = v[i];
		v[i] = v[j];
		v[j] = tmp;
		i++;
		j--;
	}
	
	
	// for (int i = 0; i < v.size(); i++) {
	// 	cout << v[i] << " ";
	// }
	// cout << endl;
	
	return v;
}


int main() {
	int n, h;
	cin >> n;
	int visited[n];
	int destination[n];
	vector<pair<int, int> > students;
	for (int i = 0; i < n; i++) {
		cin >> h;;
		students.push_back(make_pair(h, i));
	}
	
	sort(students.begin(), students.end(), sortByFirst);
	
	for (int i = 0; i < n; i++) {
		destination[students[i].second] = i;
		visited[i] = 0;
	}
	
	vector<vector<int>> cycles;
	int next;
	for (int i = 0; i < n; i++) {
		if (!visited[i]) {
			vector<int> newCycle;
			next = destination[i];
			newCycle.push_back(i);
			visited[i] = 1;
			while (!visited[next]) {
				visited[next] = 1;
				newCycle.push_back(next);
				next = destination[next];
			}
			cycles.push_back(newCycle);
		}
	}
	
	// for (int i = 0; i < cycles.size(); i++) {
	// 	for (int j = 0; j < cycles[i].size(); j++) {
	// 		cout << cycles[i][j] << " -> ";
			
	// 	}
	// 	cout << endl;
	// }
	
	
	vector<int> firstLeft, firstRight, secondLeft, secondRight;
	for (int i = 0; i < cycles.size(); i++) {
		if (cycles[i].size() == 2) {
			firstLeft.push_back(cycles[i][0]);
			firstRight.push_back(cycles[i][1]);
		} else if (cycles[i].size() > 2) {
			vector<int> newV = reverseVector(cycles[i]);
			int l = 0, r = newV.size() - 2, tmp;
			while (l < r) {
				firstLeft.push_back(newV[l]);
				firstRight.push_back(newV[r]);
				l++;
				r--;
			}
			
			newV = reverseVectorFull(cycles[i]);
			l = 0, r = newV.size() - 1;
			while (l < r) {
				// secondLeft.push_back(newV[l]);
				secondLeft.push_back(newV[l]);
				secondRight.push_back(newV[r]);
				// secondRight.push_back();
				l++;
				r--;
			}
		}
	}
	
	if (secondLeft.size() > 0) {
		cout << 2 << endl;
	} else if (firstLeft.size() > 0) {
		cout << 1 << endl;
		cout << firstLeft.size() * 2 << endl;
		for (int i = 0; i < firstLeft.size(); i++) {
			cout << firstLeft[i] + 1 << " ";
		}
		
		for (int i = firstRight.size() - 1; i >= 0; i--) {
			cout << firstRight[i] + 1 << " ";
		}
	} else {
		cout << 0;
	}
	
	
	if (secondLeft.size() > 0) {
		
		cout << firstLeft.size() * 2 << endl;
		for (int i = 0; i < firstLeft.size(); i++) {
			cout << firstLeft[i] + 1 << " ";
		}
		
		for (int i = firstRight.size() - 1; i >= 0; i--) {
			cout << firstRight[i] + 1 << " ";
		}
		cout <<  endl;
		
		
		cout << secondLeft.size() * 2 << endl;
		for (int i = 0; i < secondLeft.size(); i++) {
			cout << secondLeft[i] + 1 << " ";
		}
		
		for (int i = secondRight.size() - 1; i >= 0; i--) {
			cout << secondRight[i] + 1 << " ";
		}
		cout << endl;
	}
	

	
	return 0;
}