import sys
input=lambda: sys.stdin.readline().rstrip()
n,m=map(int,input().split())
par=[-1]*n

def find(x):
  if par[x]<0:
    return x
  else:
    par[x]=find(par[x])
    return par[x]

def unite(x,y):
  x=find(x)
  y=find(y)
  if x==y:
    return False
  else:
    if par[x]>par[y]:
      x,y=y,x
    if par[x]==par[y] and x>y:
      x,y=y,x
    par[x]+=par[y]
    par[y]=x
    return True

def same(x,y):
  return find(x)==find(y)

def size(x):
  return -par[find(x)]

for i in range(m):
  a,b=map(int,input().split())
  unite(find(a-1),find(b-1))
for i in range(n):
  find(i)
  if par[i]<0:
    print(i+1)
  else:
    print(par[i]+1)