Cod sursa(job #3350635)

Utilizator Bogdan_RuscanuRuscanu Stefan Bogdan Bogdan_Ruscanu Data 11 aprilie 2026 14:46:06
Problema Algoritmul lui Dijkstra Scor 90
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.05 kb
#include <fstream>
#include <vector>
#include <set>
const int NMAX=50005;

using namespace std;

ifstream cin("dijkstra.in");
ofstream cout("dijkstra.out");

int ans[NMAX];
vector<pair<int,int>> adjNod[NMAX];

void bfs(int n)
{
    set<pair<int,int>> toUpdate;
    for(int i=1;i<=n;i++) ans[i]=1e9;
    toUpdate.insert({0,1});
    ans[1]=0;
    while(!toUpdate.empty())
    {
        pair<int,int> nod=*toUpdate.begin();
        toUpdate.erase(toUpdate.begin());
        for(auto i:adjNod[nod.second])
        {
            if(nod.first+i.second<ans[i.first])
            {
                ans[i.first]=nod.first+i.second;
                toUpdate.insert({ans[i.first],i.first});
            }
        }
    }
}

int main()
{
    int n,m;
    cin>>n>>m;
    for(int i=1;i<=m;i++)
    {
        int nod1,nod2,dist;
        cin>>nod1>>nod2>>dist;
        adjNod[nod1].push_back({nod2,dist});
    }
    bfs(n);
    for(int i=2;i<=n;i++)
    {
        if(ans[i]==1e9) ans[i]=0;
        cout<<ans[i]<<" ";
    }
    return 0;
}