Pagini recente » Cod sursa (job #1688697) | Cod sursa (job #487473) | Cod sursa (job #275308) | Cod sursa (job #222804) | Cod sursa (job #1566481)
#include <iostream>
#include <fstream>
#include <queue>
#include <vector>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int n , m, a[1000000];
vector <int> v[10000];
vector <int> c[10000];
queue <int> q;
void dijkstra(int nod)
{
for(int i=1;i<=n;i++)
a[i]=999999999;
q.push(nod);
a[1]=0;
while(!q.empty())
{
nod=q.front();
for(int i=0;i<v[nod].size();i++)
if(a[v[nod][i]]>a[nod]+c[nod][i])
{
a[v[nod][i]]=a[nod]+c[nod][i];
q.push(v[nod][i]);
}
q.pop();
}
}
int main()
{
int x,y,cost;
fin >> n >> m;
for( int i=1; i<=m; i++ )
{
fin>>x>>y>>cost;
v[x].push_back(y);
c[x].push_back(cost);
}
dijkstra(1);
for(int i=2;i<=n;i++)
{
if(a[i]==999999999)
fout<<0<<' ';
else
fout<<a[i]<<' ';
}
}