#include <atcoder/all>
#include <bits/stdc++.h>
#include <cmath>
using namespace std;
using namespace atcoder;
using ll = long long;
#define all(A) A.begin(),A.end()
using vll = vector<ll>;
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)
using Graph = vector<vector<ll>>;
Graph G;
vll E;
vector<bool> seen;
ll k = 0;


int main() {

	ll N;
	cin >> N;
	dsu D(N);
	while (1) {
		ll A, B, C;
		cin >> A >> B >> C;
		A--; B--;
		if (!D.same(A, B))D.merge(A, B);
		if (D.size(A) == N) {
			cout << C << endl;
			return 0;
		}
	}
	
}