#include "iostream"
#include "climits"
#include "list"
#include "queue"
#include "stack"
#include "set"
#include "functional"
#include "algorithm"
#include "string"
#include "map"
#include "unordered_map"
#include "unordered_set"
#include "iomanip"
#include "cmath"
#include "random"
#include "bitset"
#include "cstdio"
#include "numeric"
#include "cassert"
#include "ctime"

using namespace std;

//constexpr long long int MOD = 1000000007;
//constexpr int MOD = 1000000007;
//constexpr int MOD = 998244353;
constexpr long long int MOD = 998244353;
constexpr double EPS = 1e-9;

//int N, M, K, H, W, L, R;
long long int N, M, K, H, W, L, R;

class UnionFind {
	vector<int>parent;
	vector<int>rank;
public:
	UnionFind(int num) {
		num++;
		parent.resize(num);
		rank.resize(num);
		for (int i = 0; i < num; i++) {
			parent[i] = i;
			rank[i] = 0;
		}
	}
	int Find(int node) {
		if (parent[node] == node)return node;
		else return parent[node] = Find(parent[node]);
	}
	void Unite(int u, int v) {
		u = Find(u);
		v = Find(v);
		if (u == v)return;
		if (rank[u] < rank[v])parent[u] = v;
		else {
			parent[v] = u;
			if (rank[u] == rank[v])rank[u]++;
		}
	}
	bool Check_Same(int u, int v) {
		return Find(u) == Find(v);
	}
};

int main() {
	ios::sync_with_stdio(false);
	cin.tie(0);

	while (cin >> N >> M, N) {
		UnionFind uf(N);
		vector<pair<int, pair<int, int>>>v(M);
		for (auto &i : v)cin >> i.second.first >> i.second.second >> i.first;
		sort(v.begin(), v.end());
		int used = 0;
		for (auto i : v) {
			if (uf.Check_Same(i.second.first, i.second.second))continue;
			used++;
			uf.Unite(i.second.first, i.second.second);
			if (used * 2 == N) {
				cout << i.first << endl;
			}
		}
	}
}
