#assert
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 sys import stdin
pin=stdin.readline
def main():
  C_SET=set()
  AB_SET=set()
  MAX_C=pow(10,100)
  N=int(pin())
  assert(2<=N<=100)
  uf=dsu(N)
  FLAG=False
  for _ in[0]*(N*(N-1)//2):
    a,b,s=pin().rstrip().split()
    a=int(a)
    b=int(b)
    assert(1<=a<=N)
    assert(1<=b<=N)
    assert(1<=int(s)<=MAX_C)
    C_SET.add(s)
    AB_SET.add((a,b))
    if FLAG:
      continue
    a-=1
    b-=1
    if uf.same(a,b):
      continue
    uf.merge(a,b)
    if uf.size(0)==N:
      print(s)
      FLAG=True
  assert(2*len(C_SET)==N*(N-1))
  assert(2*len(AB_SET)==N*(N-1))
  return

main()