from collections import deque
from sys import stdin, stdout
readline = stdin.readline
inputs = lambda: map(int, readline().split())
n, m = inputs()
g = [[] for i in xrange(n)]
for i in xrange(m):
    u, v = inputs()
    u -= 1; v -= 1
    g[u].append(v)
    g[v].append(u)

cs = []
used = [0]*n
for i in xrange(n):
    if not used[i]:
        deq = deque()
        used[i] = 1
        cnt = 1
        deq.append(i)
        while deq:
            v = deq.popleft()
            for t in g[v]:
                if not used[t]:
                    used[t] = 1
                    deq.append(t)
                    cnt += 1
        cs.append(cnt)

cs.sort()
dp = [n]*(n+1)
dp[0] = -1
s = 0
for c in cs:
    s += c
    for i in xrange(s,c-1,-1):
        dp[i] = min(dp[i], dp[i-c]+1)
for i in xrange(n):
    if dp[i]==n: dp[i] = -1
stdout.write("\n".join(map(str, dp[1:])) + "\n")