Nu aveti permisiuni pentru a descarca fisierul grader_test1.in
Cod sursa(job #2571592)
Utilizator | Data | 5 martie 2020 08:39:21 | |
---|---|---|---|
Problema | Algoritmul lui Dijkstra | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva educationala | Marime | 1.38 kb |
#include<iostream>
#include<fstream>
#include<queue>
#include<vector>
using namespace std;
ifstream fin("in.in");
ofstream fout("out.out");
const int oo = (1 << 30);
int n,m;
int d[1000];
int ap[1000];
vector< pair <int,int> >g[1000];
//priority_queue<int,vector<int>,comparare>pq;
struct comparare
{
bool operator()(int x,int y)
{
return d[x]>d[y];
}
};
priority_queue< int, vector<int> ,comparare > pq;
void dij(int k)
{
for(int i=1;i<=n;i++)
{
d[i]=oo;
}
d[k]=0;
pq.push(k);
ap[k]=1;
while(pq.empty()==0)
{
int nod=pq.top();
pq.pop();
ap[nod]=0;
for(int i=0;i<g[nod].size();i++)
{
int vecin=g[nod][i].first;
int cost=g[nod][i].second;
if(d[nod]+cost<d[vecin])
{
d[vecin]=d[nod]+cost;
if(ap[vecin]==0)
{
pq.push(vecin);
ap[vecin]=1;
}
}
}
}
}
int main ()
{
fin>>n>>m;
for(int i=1;i<=m;i++)
{
int x,y,c;
fin>>x>>y>>c;
g[x].push_back(make_pair(y,c));
}
dij(1);
for(int i=2;i<=n;i++)
{
if(d[i]!=oo)
{
fout<<d[i]<<" ";
}
}
fin.close();
fout.close();
return 0;
}