Problem: Given a connected undirected graph with n vertices and an integer k, you have to either:

  * either find an independent set that has exactly ⌈k/2⌉ vertices.
  * or find a simple cycle of length at most k. 



An independent set is a set of vertices such that no two of them are connected by an edge. A simple cycle is a cycle that doesn't contain any vertex twice. 

I have a proof that for any input you can always solve at least one of these problems, but it's left as an exercise for the reader.

Input

The first line contains three integers n, m, and k (3 ≤ k ≤ n ≤ 10^5, n-1 ≤ m ≤ 2 ⋅ 10^5) — the number of vertices and edges in the graph, and the parameter k from the statement.

Each of the next m lines contains two integers u and v (1 ≤ u,v ≤ n) that mean there's an edge between vertices u and v. It's guaranteed that the graph is connected and doesn't contain any self-loops or multiple edges.

Output

If you choose to solve the first problem, then on the first line print 1, followed by a line containing ⌈k/2⌉ distinct integers not exceeding n, the vertices in the desired independent set.

If you, however, choose to solve the second problem, then on the first line print 2, followed by a line containing one integer, c, representing the length of the found cycle, followed by a line containing c distinct integers not exceeding n, the vertices in the desired cycle, in the order they appear in the cycle.

Examples

Input


4 4 3
1 2
2 3
3 4
4 1


Output


1
1 3 

Input


4 5 3
1 2
2 3
3 4
4 1
2 4


Output


2
3
2 3 4 

Input


4 6 3
1 2
2 3
3 4
4 1
1 3
2 4


Output


2
3
1 2 3 

Input


5 4 5
1 2
1 3
2 4
2 5


Output


1
1 4 5 

Note

In the first sample:

<image>

Notice that printing the independent set \{2,4\} is also OK, but printing the cycle 1-2-3-4 isn't, because its length must be at most 3.

In the second sample:

<image>

Notice that printing the independent set \{1,3\} or printing the cycle 2-1-4 is also OK.

In the third sample:

<image>

In the fourth sample:

<image>

Solution (in JAVA):

Solution:
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Random;
import java.util.StringTokenizer;

public class F {
	static PrintWriter out = new PrintWriter(System.out);

	static int N;
	static int adj[][];
	static int NEED;
	
	static ArrayList<Integer> dChild[];
	static int dPar[];
	static int dep[];
	static boolean vis[];
	
	static int ROOT;
	
	static Random rand = new Random();
	
	static final boolean debug = false;
	
	public static void main(String[] args) {
		FS in = new FS();
		N = in.nextInt();
		int M = in.nextInt();
		int inp[][] = new int[2][M];
		int cnt[] = new int[N];
		for(int i = 0; i < M; i++) {
			inp[0][i] = in.nextInt()-1;
			inp[1][i] = in.nextInt()-1;
			cnt[inp[0][i]]++;
			cnt[inp[1][i]]++;
		}
		
		adj = new int[N][];
		for(int i = 0; i < N; i++) adj[i] = new int[cnt[i]];
		for(int i = 0; i < M; i++) {
			int a = inp[0][i];
			int b = inp[1][i];
			adj[a][--cnt[a]] = b;
			adj[b][--cnt[b]] = a;
		}
		
		if(debug) {
			for(int i = 0; i < N; i++) {
				System.out.println(i+" "+Arrays.toString(adj[i]));
			}
		}
		
		NEED = 0;
		while(NEED*NEED < N) NEED++;
		
		if(debug) {
			System.out.println("Need : "+NEED);
		}
		
		dChild = new ArrayList[N];
		for(int i = 0; i < N; i++) dChild[i] = new ArrayList<Integer>();
		dPar = new int[N];
		dep = new int[N];
		vis = new boolean[N];
		ArrayDeque<Integer> q = new ArrayDeque<Integer>();
		
// 		while(true) {
			for(int i = 0; i < N; i++) dChild[i].clear();
			Arrays.fill(vis, false);
			
			ROOT = rand.nextInt(N);
			dfs(ROOT, -1, 0);
			
			if(debug) {
				for(int i = 0; i < N; i++) {
					System.out.println(i+"  dep = "+dep[i]);
				}
			}
			
			// Now have the dfs tree. Check for simple cycle
			boolean found = false;
			for(int i = 0; i < N; i++) {
				for(int ii : adj[i]) {
					if(dep[i] < dep[ii]) continue;
					int verts = dep[i]-dep[ii]+1;
					if(verts >= NEED) {
						int cur = i;
						out.println(2);
						out.println(verts);
						while(true) {
							out.print((cur+1)+" ");
							if(cur == ii) break;
							cur = dPar[cur];
						}
						out.println();
						found = true;
						break;
					}
					if(found) break;
				}
				if(found) break;
			}
			
			if(!found) {
				// now search for independent set with the greedy
				ArrayList<Integer> set = new ArrayList<Integer>();
				boolean good[] = new boolean[N];
				Arrays.fill(good, true);
				
				int curC[] = new int[N];
				for(int i = 0; i < N; i++) curC[i] = dChild[i].size();
				q.clear();
				
				for(int i = 0; i < N; i++) {
					if(curC[i] == 0) q.add(i);
				}
				while(!q.isEmpty()) {
					int v = q.poll();
					if(good[v]) {
						set.add(v);
						for(int ii : adj[v]) good[ii] = false;
					}
					if(dPar[v] == -1) continue;
					if(--curC[dPar[v]] == 0) q.add(dPar[v]);
				}
				
				if(set.size() >= NEED) {
					out.println(1);
					for(int i = 0; i < NEED; i++) out.print((set.get(i)+1)+" ");
					found = true;
				}
			}
			
			
// 			if(found) break;
// 		}		
		
		out.close();
	}
	
	static void dfs(int node, int par, int d) {
		dPar[node] = par;
		dep[node] = d;
		vis[node] = true;
		
		for(int ii : adj[node]) {
			if(ii == par || vis[ii]) continue;
			dChild[node].add(ii);
			dfs(ii, node, d+1);
		}
	}
	
	static class FS{
		BufferedReader br;
		StringTokenizer st;
		public FS() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}
		String next() {
			while(st == null || !st.hasMoreElements()) {
				try {st = new StringTokenizer(br.readLine());}
				catch(Exception e) { throw null;}
			}
			return st.nextToken();
		}
		int nextInt() { return Integer.parseInt(next());}
		double nextDouble() { return Double.parseDouble(next());}
		long nextLong() { return Long.parseLong(next());}
		int[] NIA(int n) {
			int r[] = new int[n];
			for(int i = 0; i < n; i++) r[i] = nextInt();
			return r;
		}
		long[] NLA(int n) {
			long r[] = new long[n];
			for(int i = 0; i < n; i++) r[i] = nextLong();
			return r;
		}
		char[][] grid(int r, int c){
			char res[][] = new char[r][c];
			for(int i = 0; i < r; i++) {
				char l[] = next().toCharArray();
				for(int j = 0; j < c; j++) {
					res[i][j] = l[j];
				}
			}
			return res;
		}
	}
	
}