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Cod sursa(job #616262)
#include<fstream>
#include<queue>
#include<vector>
#define inf 0x3f3f3f
using namespace std;
struct dijk
{
int nod,cost;
};
int i,j,n,m,p1,p2,p3;
vector<dijk> a[50001];
queue<int>q;
vector<int> d(50001,inf);
void dijkstra(int x)
{
int i;
q.push(x);
d[1]=0;
while(!q.empty())
{
x=q.front();
for(i=0;i<a[x].size();++i)
if(d[a[x][i].nod]>d[x]+a[x][i].cost)
d[a[x][i].nod]=d[x]+a[x][i].cost,q.push(a[x][i].nod);
q.pop();
}
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
scanf("%d%d",&n,&m);
for(i=1;i<=m;i++)
{
scanf("%d%d%d",&p1,&p2,&p3);
a[p1].push_back((dijk){p2,p3});
a[p2].push_back((dijk){p1,p3});
}
dijkstra(1);
for(i=2;i<=n;i++)
if(d[i]==inf)
printf("0 ");
else
printf("%d ",d[i]);
return 0;
}