Pagini recente » Cod sursa (job #1260325) | Cod sursa (job #469851) | Cod sursa (job #619068) | Cod sursa (job #1513460) | Cod sursa (job #2365178)
#include <fstream>
#define NMAX 50005
#include <vector>
#include <queue>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
struct graf{int nod,val;};
int uz[NMAX];
int pre[NMAX];
int cmin[NMAX];
int h[NMAX];
int sol[NMAX];
vector <graf> g[NMAX];
struct cmp
{ bool operator()(int x, int y) {return cmin[x]>cmin[y];}
};
priority_queue <int , vector< int >, cmp> q;
int n,p,s,f,m;
void citire();
void rezolvare(int x);
int main()
{
citire();
rezolvare(1);
return 0;
}
void citire()
{
int i,j;
int a,b,c;
fin>>n>>m;
/*fin>>n>>s>>f;
for(i=1;i<=n;i++)
{
fin>>h[i];
}
*/
graf k;
for(i=1;i<=m;i++)
{
fin>>a>>b>>c;
k.val=c;
k.nod=b;
g[a].push_back(k);
/*for(j=1;j<=a;j++)
{
fin>>c;
if(h[i]>h[c])
{
k.val=h[i]/h[c];
}
else
k.val=h[c]/h[i];
k.nod=c;
g[i].push_back(k);
}
*/
}
}
void rezolvare(int x)
{
int i,a,minim;
uz[x]=1;
for(i=1;i<=n;i++)
{
cmin[i]=5000000;
}
cmin[x]=0;
q.push(x);
while(!q.empty())
{
a=q.top();
q.pop();
uz[a]=1;
for(i=0;i<g[a].size();i++)
{
if(cmin[g[a][i].nod]>cmin[a]+g[a][i].val)
{cmin[g[a][i].nod]=cmin[a]+g[a][i].val;
pre[g[a][i].nod]=a;
if(uz[g[a][i].nod]==0)
{
uz[g[a][i].nod]=1;
q.push(g[a][i].nod);
}
}
}
}
/*if(p==1)
fout<<cmin[f];
else
{
i=0;
sol[i]=f;
while(pre[f]!=0)
{
f=pre[f];
sol[++i]=f;
}
fout<<i+1<<'\n';
for(;i>=0;i--)
{
fout<<sol[i]<<' ';
}
}
*/
for(i=2;i<=n;i++)
if(cmin[i]!=5000000)
{fout<<cmin[i]<<' ';
}
else
fout<<0<<' ';
}