Pagini recente » Cod sursa (job #1458105) | Cod sursa (job #1433670) | Cod sursa (job #2967889) | Cod sursa (job #2365778) | Cod sursa (job #2417860)
#include <fstream>
#include <vector>
#include <queue>
#define INF 20001
using namespace std;
ifstream in("dijkstra.in");
ofstream out("dijkstra.out");
vector<int> d;;
struct mycomp
{
bool operator() (int &a, int &b)
{
return d[a] > d[b];
}
};
int main()
{
int n, m;
in >> n >> m;
d.assign(n+1,INF);
d[1] = 0;
vector<int> v[n+1];
vector<vector<int>> l(n+1,vector<int>(n+1));
for(int i = 0; i < m; i++)
{
int x, y, c;
in >> x >> y >> c;
l[x][y] = c;
v[x].push_back(y);
}
vector<bool> vis(n+1,false);
priority_queue<int,vector<int>,mycomp> pq;
pq.push(1);
while(!pq.empty())
{
int nod = pq.top();
pq.pop();
for(auto it: v[nod])
if(!vis[it])
{
d[it] = min(d[it],d[nod]+l[nod][it]);
pq.push(it);
}
vis[nod] = true;
}
for(int i = 2; i <= n; i++) out << (d[i] == INF ? 0 : d[i]) << ' ';
return 0;
}