Pagini recente » Istoria paginii runda/gfdgsfdgsd | Monitorul de evaluare | Clasament preonisim2008 | Istoria paginii runda/wellcodesimulareoni2 | Cod sursa (job #2363640)
#include <bits/stdc++.h>
using namespace std;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
vector < pair <int,int> > v[50001];
int a,b,c,n,d[50001],viz[50001],m;
struct cmp
{
bool operator() (int x,int y) {return (d[x]>d[y]);};
};
priority_queue <int,vector <int>,cmp> q;
void dijkstra(int x)
{
int vecin,cost,nod;
for(int i=1;i<=n;i++)
d[i]=1100000000;
d[x]=0;
q.push(x);
while(!q.empty())
{
nod=q.top();
q.pop();
//viz[nod]=0;
for(int i=0;i<v[nod].size();i++)
{
vecin=v[nod][i].first;
cost=v[nod][i].second;
if(cost+d[nod]<d[vecin])
{d[vecin]=cost+d[nod];
if(viz[vecin]==0)
{
viz[vecin]=1;
q.push(vecin);
}
}
}
}
}
int main()
{
f>>n>>m;
for(int i=1;i<=m;i++)
{
f>>a>>b>>c;
v[a].push_back({b,c});
}
dijkstra(1);
for(int i=2;i<=n;i++)
if(d[i]!=1100000000)
g<<d[i]<<" ";
else
g<<0<<" ";
return 0;
}