Pagini recente » Cod sursa (job #2475835) | Cod sursa (job #185580) | Cod sursa (job #1933) | Cod sursa (job #2521538) | Cod sursa (job #3216344)
#include <fstream>
#include <vector>
#include <queue>
#define INF 1000000001
using namespace std;
ifstream cin("dijkstra.in");
ofstream cout("dijkstra.out");
long long d[50001];
bool inCoada[50001];
vector <int> C[50001],G[50001];
int n,p,m;
struct cmp{
bool operator()(int x,int y)
{
return d[x]>d[y];
}
};
void dijkstra(int start)
{
priority_queue <int, vector<int>,cmp> Q;
Q.push(start);
d[start]=0;
inCoada[start]=1;
while(!Q.empty())
{
int x=Q.top();
inCoada[x]=0;
Q.pop();
for(unsigned int i=0;i<G[x].size();++i)
{
int j=G[x][i];
if(d[j]>d[x]+C[x][i])
{
d[j]=d[x]+C[x][i];
if(!inCoada[j])
{
inCoada[j]=1;
Q.push(j);
}
}
}
}
}
int main()
{
cin>>n>>m;
for(int i=1;i<=m;++i)
{
int x,y,c;
cin>>x>>y>>c;
G[x].push_back(y);
C[x].push_back(c);
}
for(int i=1;i<=n;++i)
d[i]=INF;
dijkstra(1);
for(int i=2;i<=n;++i)
if(d[i]==INF) cout<<"0 ";
else cout<<d[i]<<' ';
return 0;
}