Mai intai trebuie sa te autentifici.
Cod sursa(job #3360956)
| Utilizator | Data | 17 iulie 2026 17:48:37 | |
|---|---|---|---|
| Problema | Algoritmul lui Dijkstra | Scor | 100 |
| Compilator | cpp-64 | Status | done |
| Runda | Arhiva educationala | Marime | 1.08 kb |
#include <fstream>
#include <bits/stdc++.h>
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int n, m, i, j, x, y, c, dist[50005];
bool viz[50005];
struct nodd
{
int nod, cost;
};
struct cmp
{
bool operator()(const nodd&a, const nodd&b)
{
return a.cost>b.cost;
}
};
priority_queue <nodd, vector <nodd>, cmp> q;
vector <nodd> v[50005];
int main()
{
fin>>n>>m;
for(i=1; i<=m; i++)
{
fin>>x>>y>>c;
v[x].push_back({y, c});
}
for(i=2; i<=n; i++)
dist[i]=1e9;
q.push({1, 0});
while(!q.empty())
{
nodd x=q.top();
q.pop();
if(!viz[x.nod])
for(auto i: v[x.nod])
if(dist[i.nod]>dist[x.nod]+i.cost)
{
dist[i.nod]=dist[x.nod]+i.cost;
q.push({i.nod, dist[i.nod]});
}
viz[x.nod]=1;
}
for(i=2; i<=n; i++)
if(dist[i]==1e9)
fout<<0<<" ";
else
fout<<dist[i]<<" ";
return 0;
}
