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Cod sursa(job #633476)
#include <fstream>
#include <vector>
using namespace std;
std::ifstream fin ("dijkstra.in");
std::ofstream fout ("dijkstra.out");
vector <int> nod_x,nod_y,cost;
int lungimea[50001],i,n,m;
short sem;
int main () {
fin>>n>>m;
int x,y,c;
for (i=0; i<m; i++)
{
fin>>x>>y>>c;
nod_x.push_back(x);
nod_y.push_back(y);
cost.push_back(c);
}
for (i=0; i<=n; i++)
lungimea[i]=-1;
lungimea[1]=0;
while(!sem)
{
sem=1;
for (i=0; i<m; i++)
{
if (lungimea[nod_x[i]]>-1 && (lungimea[nod_y[i]]==-1 || lungimea[nod_y[i]] > lungimea[nod_x[i]]+cost[i]))
{
lungimea[nod_y[i]]=lungimea[nod_x[i]]+cost[i];
sem=0;
}
}
}
for (i=2; i<=n; i++)
if (lungimea[i]==-1)
// nu exista drum
fout << "0 ";
else
fout << lungimea[i]<<" ";
return 0;
}