Pagini recente » Cod sursa (job #283362) | Cod sursa (job #2536866) | Cod sursa (job #1009690) | Cod sursa (job #1698299) | Cod sursa (job #1163200)
#include <fstream>
#include <vector>
#include <utility>
#include <queue>
#define NMAX 100005
#define INF 999999999
#define pb push_back
#define mp make_pair
#define d first
#define nd second
using namespace std;
typedef pair<int,int> Pair;
FILE* f=freopen("dijkstra.in","r",stdin);
FILE* o=freopen("dijkstra.out","w",stdout);
int n,m;
vector<Pair> G[NMAX];
int dist[NMAX];
void Dijkstra(int x)
{
for(int i=2;i<=n;++i)
{
dist[i]=INF;
}
priority_queue<Pair, vector<Pair>, greater<Pair> > q;
q.push(mp(0,1));
while(!q.empty())
{
while(q.top().d!=dist[q.top().nd])
q.pop();
Pair nod=q.top();
q.pop();
for(int i=0;i<G[nod.nd].size();++i)
{
Pair ind=G[nod.nd][i];
if(dist[ind.nd]>dist[nod.nd]+ind.d) {
dist[ind.nd]=dist[nod.nd]+ind.d;
q.push(mp(dist[ind.nd],ind.nd));
}
}
}
}
int main()
{
scanf("%d%d",&n,&m);
for(int i=0;i<m;++i)
{
int x,y,d;
scanf("%d%d%d",&x,&y,&d);
G[x].pb(mp(d,y));
}
Dijkstra(1);
for(int i=2;i<=n;++i)
printf("%d ",dist[i]);
return 0;
}