Pagini recente » Cod sursa (job #2087006) | Cod sursa (job #2154869) | Cod sursa (job #2541454) | Cod sursa (job #3204767) | Cod sursa (job #3159570)
#include <iostream>
#include <fstream>
#include <queue>
#include <climits>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int const Vmax = 50001;
priority_queue<pair<int, int>> Q;
vector<pair<int, int>> v[Vmax];
vector<int> dist(Vmax, INT_MAX);
void bfs(int distanta, int nod){
dist[nod] = distanta;
Q.push({dist[nod], nod});
while(!Q.empty()){
int vec = Q.top().second;
int distanta_vec = -Q.top().first;
if(distanta_vec < dist[vec])
continue;
Q.pop();
for(auto i : v[vec]){
if(dist[i.second] > dist[vec] + i.first){
dist[i.second] = dist[vec] + i.first;
Q.push({-dist[i.second], i.second});
}
}
}
}
int main()
{
int n, m, z;
fin>>n>>m;
while(m--){
int x, y;
fin>>x>>y>>z;
v[x].push_back({z, y});
}
bfs(0, 1);
for(int i=2;i<=n;i++)
fout<<dist[i]<<" ";
return 0;
}