Pagini recente » Cod sursa (job #1950117) | Cod sursa (job #2835636) | Cod sursa (job #1136702) | Cod sursa (job #1143698) | Cod sursa (job #3030854)
#include <bits/stdc++.h>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
typedef pair<int,int> pr;
int dist[50005],viz[50005],i,j,n,m,a,b,cost,nod,vecin;
vector <pr> v[50005];
priority_queue <pr, vector<pr>, greater<pr>> pq;
int main()
{
fin>>n>>m;
for(i=1;i<=m;i++){
fin>>a>>b>>cost;
v[a].push_back({b,cost});
}
for(i=1;i<=n;i++){
dist[i] = 1000000000;
}
dist[1] = 0;
pq.push({0,1});
while(!pq.empty()){
nod = pq.top().second;
pq.pop();
if(!viz[nod]){
for(i=0;i<v[nod].size();i++){
vecin = v[nod][i].first;
cost = v[nod][i].second;
if(dist[vecin] > dist[nod] + cost){
dist[vecin] = dist[nod] + cost;
pq.push({dist[vecin],vecin});
}
}
viz[nod] = 1;
}
}
for(i=2;i<=n;i++){
fout << dist[i] << " ";
}
return 0;
}