class dsu:
  def __init__(self,n):
    assert n>0,"n must be Natural"
    self.n=n
    self.parents=[-1]*n
    return
  
  def find(self,x):
    assert x<self.n,"warning!! this is 0 index"
    if self.parents[x]<0:
      return x
    self.parents[x]=self.find(self.parents[x])
    return self.parents[x]
  
  def merge(self,x,y):
    assert x<self.n and y<self.n,"warning!! this is 0 index"
    x=self.find(x)
    y=self.find(y)
    if x==y:
      return
    if self.parents[x]>self.parents[y]:
      x,y=y,x
    self.parents[x]+=self.parents[y]
    self.parents[y]=x
    return
    
  def size(self,x):
    assert x<self.n,"warning!! this is 0 index"
    return -self.parents[self.find(x)]
    
  def same(self,x,y):
    assert x<self.n and y<self.n,"warning!! this is 0 index"
    return self.find(x)==self.find(y)
  
  def leader(self,x):
    assert x<self.n,"warning!! this is 0 index"
    if self.parents[x]<0:
      return x
    self.parents[x]=self.leader(self.parents[x])
    return self.parents[x]
  
  def groups(self):
    ld=[self.leader(i) for i in range(self.n)]
    res=[[] for _ in range(self.n)]
    for i in range(self.n):
      res[ld[i]].append(i)
    return list(filter(lambda a:a !=[],res))
    
from collections import deque
def main():
  N=int(input())
  uf=dsu(N)
  to=[[]for _ in[0]*N]
  for i in range(N):
    A,B=map(int,input().split())
    uf.merge(A-1,B-1)
    to[A-1].append([B-1,i])
    if A!=B:
      to[B-1].append([A-1,i])
  seen=[0]*N
  ans=[-1]*N
  
  gr=uf.groups()
  for linked in gr:
    is_cycle=True
    root=-1
    cycle_cnt=0
    
    for point in linked:
      link_size=len(to[point])
      for k in range(link_size):
        if to[point][k][0]==point:
          cycle_cnt+=1
          is_cycle=False
          ans[to[point][k][1]]=point+1
          root=point
    
    if cycle_cnt>1:
      print("No")
      return
    
    if is_cycle:
      next_point=-1
      que=deque()
      que.append([linked[0],-1])
      
      while que:
        q=que.pop()
        for j in to[q[0]]:
          if j[1]==q[1]:
            continue
          if seen[j[0]]:
            root=j[0]
            next_point=q[0]
            ans[j[1]]=root+1
            que.clear()
            break
          que.append([j[0],j[1]])
        seen[q[0]]=1
      
      if next_point==-1:
        print("No")
        return
      
    dq=deque()
    dq.append(root)

    while dq:
      q=dq.pop()

      for j in to[q]:
        if ans[j[1]]==-1:
          ans[j[1]]=j[0]+1
          dq.append(j[0])
  
  for i in ans:
    if i==-1:
      print("No")
      return
  
  print("Yes")
  for i in ans:
    print(i)
  return

main()