Pagini recente » Cod sursa (job #1419771) | Cod sursa (job #2536595) | Cod sursa (job #1522996) | Cod sursa (job #263290) | Cod sursa (job #888100)
Cod sursa(job #888100)
#include <iostream>
#include<fstream>
using namespace std;
const int inf=1<<30;
struct graf
{
int nod,cost;
graf *next;
};
int verif[50001],d[50001],n,m;
graf *a[50001];
void add(int unde,int ce,int cost)
{
graf *q=new graf;
q->cost=cost;
q->nod=ce;
q->next=a[unde];
a[unde]=q;
}
void citire()
{
int i,x,y,z;
ifstream f("dijkstra.in");
f>>n>>m;
for(i=1;i<=m;i++)
{
f>>x>>y>>z;
add(x,y,z);
}
}
void dijkstra(int inceput)
{
int i,j,min,qmin=0;
for(i=1;i<=n;i++)
if(i!=inceput)
d[i]=inf;
for(i=1;i<=n;i++)
{
min=inf;
for(j=1;j<=n;j++)
if(min>d[j]&&verif[j]==0)
{
qmin=j;
min=d[j];
}
verif[qmin]=1;
graf*t=a[qmin];
while(t)
{
if(d[t->nod]>d[qmin]+t->cost)
d[t->nod]=d[qmin]+t->cost;
t=t->next;
}
}
}
int main()
{
citire();
dijkstra(1);
ofstream g("dijkstra.out");
for(int i=2;i<=n;i++)
if(d[i]!=inf)
g<<d[i]<<" ";
else
g<<"0 ";
return 0;
}