N = gets.to_i

cost = Array.new(N) {Array.new(N, Float::INFINITY)}

(N*(N-1)/2).times {
	a, b, c = gets.split(" ").map{|s| s.to_i}
	cost[a-1][b-1] = cost[b-1][a-1] = c
}

mincost = Array.new(N, Float::INFINITY)
used = Array.new(N, false)

mincost[0] = 0
res = 0

loop {
	v = -1
	0.upto(N-1) {|u|
		v = u if !used[u] and (v == -1 or mincost[u] < mincost[v])
	}
	break if v == -1
	used[v] = true
	res = mincost[v] if res < mincost[v]
	0.upto(N-1) {|u|
		mincost[u] = cost[v][u] if mincost[u] > cost[v][u]
	}
}

puts res