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Cod sursa(job #675526)
#include<fstream>
#define INF 0x3f3f3f
using namespace std;
ofstream out("dijkstra.out");
int a[1400][1400],uz[1400],T[1400],d[1400],n,m;
void citire();
int dijkstra(int start);
int main()
{
citire();
dijkstra(1);
for(int i=2;i<=n;i++)
out<<d[i]<<" ";
return 0;
}
void citire()
{
ifstream in("dijkstra.in");
in>>n>>m;
int i,j,c;
for(;m;m--)
{
in>>i>>j>>c;
a[i][j]=c;
}
for(int i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(i!=j&&a[i][j]==0)
a[i][j]=INF;
}
int dijkstra(int start)
{
int i,j,k,poz;
for(i=1;i<=n;i++)
{
d[i]=a[start][i];
T[i]=start;
uz[i]=0;
}
uz[start]=1;
T[start]=0;
for(i=1;i<n;i++)
{
int minim=INF;
for(j=1;j<=n;j++)
if(d[j]<minim&&uz[j]==0)
{
minim=d[j];
poz=j;
}
uz[poz]=1;
for(k=1;k<=n;k++)
if(d[k]>d[poz]+a[poz][k])
{
d[k]=d[poz]+a[poz][k];
T[k]=poz;
}
}
return 1;
}