Pagini recente » Cod sursa (job #1619670) | Cod sursa (job #1119926) | Cod sursa (job #3161166) | Cod sursa (job #1787120) | Cod sursa (job #1465033)
#include <iostream>
#include <fstream>
#include <utility>
#include <set>
#include <vector>
#include <queue>
#define NMAX 50001
#define INF 20000
#define nod second
#define cost first
using namespace std;
vector<int> G[NMAX],C[NMAX];
//set<pair<int,int> > heap;
int n,m,q,y,c,d[NMAX],x,val;
void dijakstra()
{
priority_queue< pair<int,int> > T;
int nods,costs;
T.push(make_pair(0,1));
while(!T.empty())
{
val = T.top().cost;
x = T.top().nod;
T.pop();
for(int i=0;i<G[x].size();i++)
{
if(d[G[x][i]]> val + C[x][i])
{
d[G[x][i]]= val + C[x][i];
T.push(make_pair(d[G[x][i]],G[x][i]));
}
}
}
}
int main()
{
ifstream in("dijkstra.in");
ofstream out("dijkstra.out");
in >> n >> m;
//cout << n;
for(int i=0;i<m;i++)
{
in >> q >> y >> c;
G[q].push_back(y);
C[q].push_back(c);
}
for(int i=2;i<=n;i++)
d[i] = INF;
dijakstra();
for(int i=2;i<=n;i++)
{
if(d[i]==INF)
out << 0 << " ";
else
out << d[i] << " ";
}
return 0;
}