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Cod sursa(job #756666)
//#include <cstdio>
//#include <vector>
//#include <utility>
//#include <algorithm>
//#include <queue>
//
//using namespace std;
//
//vector <int> bellman_ford (int sursa, int n, vector <vector < pair <int, int> > > &G, bool &ok) {
// vector < pair <int, int> > :: iterator it;
// vector <int> len, d;
// queue <int> q;
// len.resize (n + 1);
// d.resize (n + 1, 1 << 30);
// ok = true;
// d [sursa] = 0;
// len [sursa] = 0;
// q.push (sursa);
// while (ok && !q.empty ()) {
// sursa = q.front ();
// q.pop ();
// for (it = G [sursa].begin (); it != G [sursa].end (); ++ it) {
// if (d [it->first] > d [sursa] + it->second) {
// d [it->first] = d [sursa] + it->second;
// len [it->first] = 1 + len [sursa];
// q.push (it->first);
// if (len [it->first] >= n) {
// ok = false;
// break;
// }
// }
// }
// }
// return d;
//}
//
//int main () {
// vector <vector < pair <int, int> > > G;
// vector <int> d;
// bool ok;
// int i, n, m, x, y, c;
// freopen ("dijkstra.in", "rt", stdin);
// freopen ("dijkstra.out", "wt", stdout);
// scanf ("%d%d", &n, &m);
// G.resize (n + 1);
// for (i = 0; i < m; ++ i) {
// scanf ("%d%d%d", &x, &y, &c);
// G [x].push_back (make_pair (y, c));
// }
// d = bellman_ford (1, n, G, ok);
// if (! ok) {
// printf ("Ciclu negativ!");
// }
// else {
// if (d [2] == (1 << 30)) {
// d [2] = 0;
// }
// printf ("%d", d [2]);
// for (i = 3; i <= n; ++ i) {
// if (d [i] == (1 << 30)) {
// d [i] = 0;
// }
// printf (" %d", d [i]);
// }
// printf ("\n");
// }
// return 0;
//}
#include <fstream>
#include <vector>
#include <algorithm>
#include <queue>
#include <cstring>
using namespace std;
#define FILEIN "dijkstra.in"
#define FILEOUT "dijkstra.out"
const int MAXN = 50005;
const int INF = 0x3f3f3f3f;
int N, M;
vector< pair<int, int> > G[MAXN];
int Dmin[MAXN];
void ReadData() {
ifstream fin(FILEIN);
fin >> N >> M;
for (int i = 0; i < M; ++i) {
int a, b, c;
fin >> a >> b >> c;
G[a].push_back(make_pair(b, c));
}
}
void Solve() {
bool InQueue[MAXN];
queue<int> Q;
memset(Dmin, INF, sizeof(Dmin));
memset(InQueue, false, sizeof(InQueue));
Dmin[1] = 0;
Q.push(1);
InQueue[1] = true;
while (!Q.empty()) {
int nod = Q.front();
Q.pop();
InQueue[nod] = false;
for (vector< pair<int, int> >::iterator it = G[nod].begin(); it != G[nod].end(); ++it)
if (Dmin[nod] + it->second < Dmin[it->first]) {
Dmin[it->first] = Dmin[nod] + it->second;
if (!InQueue[it->first]) {
Q.push(it->first);
InQueue[it->first] = true;
}
}
}
}
void WriteData() {
ofstream fout(FILEOUT);
for (int i = 2; i <= N; ++i)
fout << (Dmin[i] < INF ? Dmin[i] : 0) << " ";
}
int main() {
ReadData();
Solve();
WriteData();
}