#include <iostream>
#include <fstream>
#include <algorithm>
#include <vector>


using namespace std;

#define nmax 200002

vector <int> edges[nmax], edge_price[nmax];

int cost[nmax];

int main()
{
    int n, m, i, a, b, cost;
    cin >> n >> m;
    /*ifstream cin("apm.in");
    ofstream cout("apm.out");*/
    for( i = 0; i < m; i++ ) {
        cin >> a >> b >> cost;
        edges[a].push_back(b);
        edges[a].push_back(cost);
        edges[b].push_back(a);
        edges[b].push_back(cost);

    }



    return 0;
}