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Cod sursa(job #896614)
#include<fstream>
#include<iostream>
#define nr 3000
using namespace std;
long maxi=100000;
int a[nr][nr],mini,d[nr],c,k;
int i,n,m,t[nr],poz,j,s[nr],ci[nr];
int main()
{ifstream f("ubuntzei.in");
ofstream g("ubuntzei.out");
f>>n>>m;
f>>k;
for(i=1;i<=k;i++)
f>>ci[i];
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
if(i==j) a[i][j]=a[j][i]=0;
else a[i][j]=a[j][i]=maxi;
while(f>>i>>j>>c)
a[i][j]=a[j][i]=c;
s[1]=1;
d[1]=a[1][1];
for(i=2;i<=n;i++)
{d[i]=a[1][i];
if(d[i]<maxi) t[i]=1;}
for(i=1;i<n;i++)
{mini=maxi;
for(j=1;j<=n;j++)
if(s[j]==0)
if(d[j]<mini)
{mini=d[j];
poz=j;}
s[poz]=1;
for(j=1;j<=n;j++)
if(s[j]==0)
if(d[j]>d[poz]+a[poz][j])
{d[j]=d[poz]+a[poz][j];
t[j]=poz;}}
g<<d[n];}