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Cod sursa(job #505888)
#include<cstdio>
#include<queue>
#define INF 0x3f3f3f3f
#define Nmx 50001
using namespace std;
int n,m,C[Nmx],viz[Nmx];
queue <int> q;
struct nod
{
int inf;
int cost;
nod *urm;
};
nod *G[Nmx];
void add(int x,int y,int c)
{
nod *aux=new nod;
aux->inf=y;
aux->cost=c;
aux->urm=G[x];
G[x]=aux;
}
void citire()
{
int x,y,c;
scanf("%d%d",&n,&m);
for(int i=1;i<=m;++i)
{
scanf("%d%d%d",&x,&y,&c);
add(x,y,c);
}
}
void solve()
{
for(int i=1;i<=n;++i)
C[i]=INF;
q.push(1);
C[1]=0;
while(!q.empty())
{
int x=q.front();
q.pop();
viz[x]=0;
for(nod *p=G[x];p;p=p->urm)
if(C[x]+p->cost<C[p->inf])
{
C[p->inf]=C[x]+p->cost;
if(!viz[p->inf])
{
q.push(p->inf);
viz[p->inf]=1;
}
}
}
}
void afisare()
{
for(int i=2;i<=n;++i)
if(C[i]==INF)
printf("0 ");
else printf("%d ",C[i]);
printf("\n");
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
citire();
solve();
afisare();
return 0;
}