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Cod sursa(job #655982)
#include <cstdio>
#include <vector>
#include <queue>
#include <algorithm>
#define N 50005
using namespace std;
struct nod{
int y,d;
};
vector <nod> G[N];
queue <int> C;
int n,m;
int viz[N],dist[N];
void read()
{
int x;
nod t;
scanf("%d %d",&n,&m);
for (int i=1;i<=m;i++)
{
scanf("%d %d %d",&x,&t.y,&t.d);
G[x].push_back(t);
}
}
void init()
{
for (int i=2;i<=n;i++)
dist[i]=1010;
}
void dijkstra(int nod)
{
//if (nod>n)
// return;
if (dist[nod]!=1010)
for (int i=0;i<G[nod].size();i++)
// if (!viz[G[nod][i].y])
{
int a=G[nod][i].y;
int b=G[nod][i].d;
if (dist[a]>dist[nod]+b)
{
dist[a]=dist[nod]+b;
C.push(a);
}
//dist[G[nod][i].y]=min(dist[G[nod][i].y],dist[nod]+G[nod][i].d);
}
viz[nod]=1;
C.pop();
if (C.empty())
return;
int nodd=C.front();
dijkstra(nodd);
}
void print()
{
for (int i=2;i<=n;i++)
if (dist[i]!=1010)
printf("%d ",dist[i]);
else
printf("0 ");
}
int main()
{
freopen("dijkstra.in","r",stdin);
freopen("dijkstra.out","w",stdout);
read();
init();
C.push(1);
dijkstra(1);
print();
return 0;
}