Cod sursa(job #271968)

Utilizator andrabAndra B andrab Data 6 martie 2009 10:35:09
Problema Algoritmul lui Dijkstra Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.81 kb
#include<fstream.h>
#define inf 50000

ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");


int n,m,t[inf],v[inf],d[inf],a[inf][inf];

void citire()
{int i,j,x,y,c;
 fin>>n>>m;
 for(i=1;i<=n;i++)
 for(j=i+1;j<=n;j++)
 a[i][j]=inf;
 for(i=1;i<=m;i++)
 {fin>>x>>y>>c;
  a[x][y]=c;
  }

 for(i=1;i<=n;i++)
 {d[i]=a[1][i];
  if(d[i]<inf) t[i]=1;
  }
 }



void afisare()
{int i;
 for(i=2;i<=n;i++)
 if(d[i]<inf)
 fout<<d[i]<<" ";
 }

int main()
{int i,j,min,imin=0;
 citire();
 for(i=1;i<n;i++)
 {min=inf;
  for(j=1;j<=n;j++)
  if(v[j]==0 && d[j]<min)
  {min=d[j];
   imin=j;
   }
  v[imin]=1;
 for(j=1;j<=n;j++)
 if(v[j]==0 && d[j]>d[imin]+a[imin][j])
  {d[j]=d[imin]+a[imin][j];
   v[j]=1;
   t[j]=imin;
   }
 }
 afisare();
 fin.close();
 fout.close();
 return 0;
 }