Pagini recente » Cod sursa (job #178267) | Cod sursa (job #1423810) | Cod sursa (job #889308) | Cod sursa (job #202715) | Cod sursa (job #1004419)
#include <fstream>
#include <vector>
#define NMax 50005
#define oo 1<<30
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int N,M,D[NMax],S[NMax];
vector <pair <int, int> > G[NMax];
void Read()
{
fin>>N>>M;
for(int i=1;i<=M;i++)
{
int x,y,c;
fin>>x>>y>>c;
G[x].push_back(make_pair(y,c));
}
}
void Dijkstra()
{
int i,j;
for(i=2;i<=N;i++)
D[i]=oo;
for(i=1;i<=N;i++)
{
int Min=oo,P;
for(j=1;j<=N;j++)
if(!S[j]&&D[j]<Min)
{
Min=D[j];
P=j;
}
S[P]=1;
for(j=0;j<G[P].size();j++)
{
int Vecin=G[P][j].first,Cost=G[P][j].second;
if(D[Vecin]>D[P]+Cost)
D[Vecin]=D[P]+Cost;
}
}
}
void Print()
{
for(int i=2;i<=N;i++)
{
if(D[i]==oo)
D[i]=0;
fout<<D[i]<<" ";
}
fout<<"\n";
}
int main()
{
Read();
Dijkstra();
Print();
return 0;
}