N=int(input())
E=[]
for i in range(N*(N-1)//2):
  a,b,c=map(int,input().split())
  E.append((c,a-1,b-1))
par=[i for i in range(N)]
rank=[0]*(N+1)
def root(x):
  if par[x]==x:
    return x
  else:
    par[x]=root(par[x])
    return par[x]
def unite(x,y):
  rx,ry=root(x),root(y)
  if rx==ry:
    return
  else:
    if rank[x]<rank[y]:
      par[rx]=ry
    else:
      par[ry]=rx
      if rank[x]==rank[y]:
        rank[x]+=1
def same(x,y):
  rx,ry=root(x),root(y)
  return rx==ry
max_cost=0
for cost,s,g in E:
  if not same(s,g):
    max_cost=cost
    unite(s,g)
print(max_cost)