package main

import . "fmt"
import . "os"
import bf "bufio"

func main() {
	rd:=bf.NewReader(Stdin)
	var n, m int
	Fscan(rd,&n,&m)
	graph := make([][]int, n+1)
	for i:=0;i<m;i++ {
		var u,v int
		Fscan(rd,&u,&v)
		graph[u]=append(graph[u],v)
		graph[v]=append(graph[v],u)
	}
	visited := make([]bool, n+1)
	visited[1] = true
	cnt1,cnt2 := 0,1
	if len(graph[1])==0 {
		cnt2=0
	}
	nodes, nexts := []int{1}, []int{}
	for i:=0; i< n; i++ {
		nexts = nexts[:0]
		for _, node := range nodes {
			for _, t := range graph[node] {
				if visited[t] {
					continue
				}
				cnt1++
				nexts = append(nexts, t)
				visited[t] = true
			}
		}
		Println(cnt1)
		cnt1,cnt2=cnt2,cnt1
		nodes, nexts = nexts, nodes
	}
}