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Cod sursa(job #699845)
#include<fstream>
#include<vector>
#include<queue>
#define pb push_back
#define DIM 50003
#define INF 0x3f3f3f3f
using namespace std;
ifstream in("dijkstra.in");
ofstream out("dijkstra.out");
int N, M, Dist[DIM];
vector< pair< int, int > > G[DIM];
queue< int > Q;
bool InQueue[DIM];
void Solve()
{
Dist[1] = 0;
Q.push(1);
InQueue[1] = true;
while( !Q.empty() )
{
int x = Q.front();
Q.pop();
InQueue[x] = false;
for(vector< pair< int, int > > ::iterator it = G[x].begin(); it != G[x].end(); ++it )
if( Dist[x] + it -> second < Dist[it -> first] ) {
Dist[it -> first] = Dist[x] + it -> second;
if( InQueue[it -> first] == 0 )
InQueue[it -> first] = true, Q.push(it -> first);
}
}
}
int main()
{
int i, x, y, c;
in >> N >> M;
for(i = 1; i <= M; i++)
{
in >> x >> y >> c;
G[x].pb(make_pair(y,c));
}
for(i = 1; i <= N; i++)
Dist[i] = INF;
Solve();
for(i = 2; i <= N; i++)
if( Dist[i] < INF )
out << Dist[i] << " ";
else out << "0 " ;
return 0;
}