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Cod sursa(job #702633)
#include<iostream>
#include<fstream>
using namespace std;
const int inf=2000;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
long n,m,a[5000][5000],t[50000];
void citire()
{
f>>n>>m;
for(int i=1;i<=n;i++)
for(int j=1;j<=n;j++)
if(i!=j)
a[i][j]=inf;
long x,y,c;
while(f>>x>>y>>c)
a[x][y]=c;
}
void dijkstra()
{
int min,pos,ok=0;
while(!ok)
{
min=inf;
for(int i=2;i<=n;i++)
if(a[1][i]<min&&!t[i])
{
min=a[1][i];
pos=i;
}
t[pos]=1;
if(min!=inf)
for(int i=2;i<=n;i++)
if(!t[i]&&a[1][i]>a[1][pos]+a[pos][i])
a[1][i]=a[1][pos]+a[pos][i];
else;
else
ok=1;
}
}
int main()
{
citire();
dijkstra();
for(int i=2;i<=n;i++)
if(a[1][i]==inf)
g<<"0 ";
else
g<<a[1][i]<<" ";
}