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Cod sursa(job #698226)
#include<iostream>
#include<fstream>
using namespace std;
int main ()
{
int i, j, k, n, t[100][100], m, el[100][4], c[100];
fstream f, g;
f.open ("ubuntzei.in", ios::in);
f>>n>>m;
f>>k;
for (i=1; i<=k; i++)
f>>c[i];
for (i=1; i<=m; i++)
f>>el[i][1]>>el[i][2]>>el[i][3];
for (i=1; i<=m; i++)
{
t[el[i][1]][el[i][2]]=el[i][3];
t[el[i][2]][el[i][1]]=el[i][3];
}
for (i=1; i<=n; i++)
for (j=1; j<=n; j++)
{
if ((i!=j)&&(t[i][j]==0)) t[i][j]=1000;
}
for (k=1; k<=n; k++)
for (i=1; i<=n; i++)
for (j=1; j<=n; j++)
if ((t[i][k]!=0)&&(t[k][j]!=0)&&(t[i][k]+t[k][j]<t[i][j]))
t[i][j]=t[i][k]+t[k][j];
/*for (i=1; i<=n; i++)
{
for (j=1; j<=n; j++)
cout<<t[i][j]<<' ';
cout<<endl;
}*/
g.open ("ubuntzei.out", ios::out);
g<<t[1][n];
}