Pagini recente » Monitorul de evaluare | Autentificare | Istoria paginii runda/cerculdeinfo-lectia8-kmp.z.manacher | pixel_cup | Cod sursa (job #1291239)
#include <iostream>
#include <fstream>
#include <vector>
#define NMax 50005
#define inf 100000000
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int n,m;
vector <pair<int,int> > G[NMax];
int d[NMax],viz[NMax];
void read()
{
int i,x,y,cost;
fin>>n>>m;
for(i=1;i<=m;i++)
{
fin>>x>>y>>cost;
G[x].push_back(make_pair(y,cost));
}
}
void dijkstra()
{
for(int i=2;i<=n;i++)
d[i]=inf;
for(int i=2;i<=n;i++)
{
int Min=inf, nod;
int j;
for(j=1;j<=n;j++)
if(Min>d[j]&& viz[j]==0)
{
Min=d[j];
nod=j;
}
viz[nod]=1;
for(unsigned int j=0;j<G[nod].size();j++)
{
int vecin=G[nod][j].first;
int Cost=G[nod][j].second;
d[vecin]=min(d[vecin],d[nod]+Cost);
}
}
}
int main()
{
read();
dijkstra();
int i;
for(i=2;i<=n;i++)
if(d[i]==inf) fout<<0<<" ";
else fout<<d[i]<<" ";
fout<<"\n";
return 0;
}