Pagini recente » Cod sursa (job #310333) | Cod sursa (job #3165141) | Cod sursa (job #2387110) | Cod sursa (job #2615389) | Cod sursa (job #2459319)
#include <fstream>
#include <vector>
#include <climits>
#include <queue>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int n,m,i,j,x,y,c,d[50005],Min,poz;
bool viz[50005];
struct arc{
int v,c;
};
vector <arc> g[50005];
struct cmp{
bool operator()(const int& a, const int& b)const{
return d[a]>d[b];
}
};
priority_queue <int, vector <int>, cmp> h;
int main(){
fin>>n>>m;
for(i=1;i<=m;i++){
fin>>x>>y>>c;
g[x].push_back({y,c});
}
for(i=2;i<=n;i++)
d[i]=INT_MAX;
h.push(1);
while(!h.empty()){
if(viz[h.top()]){
h.pop();
continue;
}
int nod=h.top();
h.pop();
viz[nod]=1;
for(i=0;i<g[nod].size();i++){
int nou=g[nod][i].v;
int cost=g[nod][i].c;
if(d[nou]>d[nod]+cost){
d[nou]=d[nod]+cost;
h.push(nou);
viz[nou]=0;
}
}
}
for(i=2;i<=n;i++)
if(d[i]==INT_MAX)
fout<<0<<' ';
else
fout<<d[i]<<' ';
return 0;
}