Pagini recente » Cod sursa (job #1986178) | Cod sursa (job #1907937) | Cod sursa (job #2106341) | Cod sursa (job #2909209) | Cod sursa (job #3310199)
#include <fstream>
#include <vector>
#include <set>
using namespace std;
ifstream cin("dijkstra.in");
ofstream cout("dijkstra.out");
const int inf=1e9;
int n,m,i,x,y,cost,nod,d[50005],vec;
vector<pair<int,int>> v[50005];
set<pair<int,int>> s;
int main()
{
cin>>n>>m;
for(i=1;i<=n;i++) d[i]=inf;
for(i=1;i<=m;i++)
{
cin>>x>>y>>cost;
v[x].push_back({y,cost});
}
d[1]=0;
s.insert({0,1});
while(!s.empty())
{
nod=s.begin()->second;
s.erase(s.begin());
for(i=0;i<v[nod].size();i++)
{
vec=v[nod][i].first;
cost=v[nod][i].second;
if(d[nod]+cost<d[vec])
{
s.erase({d[vec],vec});
d[vec]=d[nod]+cost;
s.insert({d[vec],vec});
}
}
}
for(i=2;i<=n;i++)
{
if(d[i]!=inf) cout<<d[i]<<' ';
}
return 0;
}