Pagini recente » Cod sursa (job #2129694) | Cod sursa (job #1367430) | Cod sursa (job #1144721) | Cod sursa (job #1556459) | Cod sursa (job #699833)
Cod sursa(job #699833)
#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 viz[DIM];
void Solve(){
viz[1] = 1;
Q.push(1);
while( !Q.empty() )
{
int x = Q.front();
Q.pop();
viz[x] = 0;
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( !viz[it -> first] )
viz[it -> first] = 1, 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 = 2; i <= N; i++)
Dist[i] = INF;
Solve();
for(i = 2; i <= N; i++)
out << Dist[i] << " ";
return 0;
}