#include <vector>
#include <iostream>
#include <fstream>
#include <set>
#include <queue>
#define cout std::cout
typedef std::pair<int, int> pair;

std::ifstream in("dijkstra.in");
std::ofstream out("dijkstra.out");

const int N=50000;
const int M=250000;
const int INF=2000000000;

struct muchie
{
    int from;
    int to;
    int cost;
};

int dist[N+1];
std::vector<int> v[N+1];
muchie edge[M+1];



struct boring
{
    int first;
    int second;
};

bool operator<(const boring a, const boring b)
{
    return a.first>b.first;
}

std::priority_queue<boring, std::vector<boring>> q;

void Dijkstra()
{
    dist[1]=0;
    q.push({0, 1});
    int cnt =0;
    while(!q.empty())
    {
        int dist_curr=q.top().first;
        int curr=q.top().second;
        q.pop();

        if(dist_curr==dist[curr])
        {
            for(int l : v[curr])
            {
                int to = edge[l].to;

                if(dist_curr+edge[l].cost<dist[to])
                {
                    cnt++;
                    dist[to]=dist_curr+edge[l].cost;
                    q.push({dist[to], to});
                }
            }
        }
    }
    cout << cnt;
}

int n, m;

int main()
{
    in>>n>>m;
    for(int i=1; i<=m; i++)
    {
        in>>edge[i].from>>edge[i].to>>edge[i].cost;
        v[edge[i].from].push_back(i);
    }

    for(int i=1; i<=n; i++)
    {
        dist[i]=INF;
    }
    Dijkstra();

    for(int i=2; i<=n; i++)
    {
        if(dist[i]-INF) out<<dist[i]<<" ";
        else out<<0<<" ";
    }
}