Pagini recente » Cod sursa (job #392742) | Monitorul de evaluare | Cod sursa (job #705499) | Cod sursa (job #381780) | Cod sursa (job #381493)
Cod sursa(job #381493)
#include<iostream>
#include<fstream>
using namespace std;
int a[100][100],n,i,infinit=1000000,s[100],x,y,m,j,cost,start,d[100],prec[100],min;
void citire()
{
ifstream f("dijkstra.in");
f>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=n;j++)
a[i][j]=infinit;
for(i=1;i<=m;i++)
{
f>>x>>y>>cost;
a[x][y]=cost;
}
f.close();
}
void initializare()
{
s[start]=1;
for(i=1;i<=n;i++)
if (a[start][i]!=infinit)
d[i]=a[start][i];
else d[i]=infinit;
}
void dijkstra()
{int gasit,min,k;
do{
gasit=0;
min=infinit;
for(i=1;i<=n;i++)
if (s[i]==0&&d[i]<min)
{
min=d[i];
k=i;
gasit=1;
}
s[k]=1;
for(i=1;i<=n;i++)
if (d[i]>d[k]+a[k][i])
{
prec[i]=k;
d[i]=d[k]+a[k][i];
}
}
while (gasit==1);
}
void afisare()
{
ofstream g("dijkstra.out");
for(i=2;i<=n;i++)
g<<d[i]<<" ";
g.close();
}
int main()
{
citire();
start=1;
initializare();
dijkstra();
afisare();
return 0;
}