n=int(input())
a = []
par=[-1]*n

def root(x):
    if par[x] < 0:return x
    return root(par[x])
def same(x,y):
    return root(x)==root(y)
def merge(x, y):
    if same(x,y):return
    x=root(x)
    y=root(y)
    if par[x]>par[y]:
        x,y=y,x
    par[x]+=par[y]
    par[y]=x
def sz(x):
    return -par[root(x)]

for _ in range(n*(n-1)//2):
    x,y,z=map(int,input().split())
    x-=1
    y-=1
    a.append([z, x, y])
a=sorted(a)

for z,x,y in a:
    merge(x, y)
    if sz(0)==n:
        print(z)
        break