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Cod sursa(job #468174)
#include <fstream>
#include <queue>
#define INF 99999
using namespace std;
ifstream in("dijkstra.in");
ofstream out("dijkstra.out");
queue<int> Q;
vector<int> V[50000];
vector<int> C[50000];
int D[50000];
bool Uz[50000];
int main()
{
int N,M,x,y,c,i;
in>>N>>M;
while(M--)
{
in>>x>>y>>c;
V[x].push_back(y);
C[x].push_back(c);
}
for(i=2;i<=N;i++) D[i] = INF;
//dijkstra
Q.push(1);
while(!Q.empty())
{
x = Q.front();
Q.pop();
Uz[x] = 1;
for(i=0;i<V[x].size();i++)
{
y = V[x][i];
c = C[x][i];
if(D[x]+c<D[y])
{
D[y] = D[x] + c;
if(Uz[x])
Q.push(y);
}
}
}
for(i=2;i<=N;i++)
if(D[i]==INF)
out<<"0 ";
else out<<D[i]<<' ';
return 0;
}