/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		int m = sc.nextInt();
		List<List<Integer>> adj = new ArrayList<>();
		for(int i=0; i<=n;i++){
			adj.add(new ArrayList<>());
		}
		
		for(int i=0; i<m; i++){
			int u = sc.nextInt();
			int v = sc.nextInt();
			adj.get(u).add(v);
			adj.get(v).add(u);
		}
		System.out.println(adj);
	isReachable(adj,6);
	}
	
	public static void isReachable(	List<List<Integer>> adj,int src){
		Queue<Integer> q = new LinkedList<>();
		boolean visited[] = new boolean[adj.size()];
		q.add(src);
		visited[src] = true;
		
		while(!q.isEmpty()){
			int cur = q.poll();
			
			for(int x : adj.get(cur)){
				if(!visited[x]){
					q.add(x);
					visited[x] = true;
				}
			}
		}
		
		for(int i = 1; i< visited.length; i++){
			System.out.print(visited[i]+" ");
		}
	}
	
}