Pagini recente » Cod sursa (job #225993) | Cod sursa (job #53373) | Cod sursa (job #2891560) | Cod sursa (job #2850702) | Cod sursa (job #780956)
Cod sursa(job #780956)
#include<fstream>
#include<vector>
#include<bitset>
#include<queue>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
struct pereche{int n,c;};
vector <pereche> a[50001];
int d[50001];
bitset<50001> apar;
void dijkstra(int nod)
{
int i , curent;
queue<int> q;
q.push(nod);
apar[nod]=1;
while(!q.empty())
{
nod=q.front();
q.pop();
apar[nod]=0;
for(i=0; i<a[nod].size();i++)
{
curent=a[nod][i].n;
if(d[curent]==0 || d[curent]>d[nod]+a[nod][i].c)
{
d[curent]=d[nod]+a[nod][i].c;
if(apar[curent]==0)
{
q.push(curent);
apar[curent]=1;
}
}
}
}
}
int main()
{
int n , m;
f>>n>>m;
int i , q;
pereche z;
for(i=1; i<=m; i++)
{
f>>q>>z.n>>z.c;
a[q].push_back(z);
}
dijkstra(1);
for(i=2; i<=n; i++) g<<d[i]<<" ";
}