Cod sursa(job #3251539)

Utilizator dorucioroslanCioroslan Doru dorucioroslan Data 26 octombrie 2024 10:52:53
Problema Algoritmul lui Dijkstra Scor 0
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.99 kb
#include <bits/stdc++.h>
#include <vector>

#define skibidiDaydreams 500005
using namespace std;
ifstream fin("a.in");
ofstream fout("a.out");
vector <pair <int, int>> v[skibidiDaydreams];
int n,m,x,y,c;
set <pair < int,int>> s;
bool viz[skibidiDaydreams];
int dist[skibidiDaydreams];
int inf=38742349827;


int main()
{ fin>>n>>m;
    for(int i=1; i<=m; i++){
        fin>>x>>y>>c; v[x].push_back({y,c});
    }
    dist[1]=0;
    for(int i=2; i<=n; i++) dist[i] = inf;
    s.insert({0,1});
    while(!s.empty()){
        int nod = s.begin()->second;
        s.erase(s.begin());
        for(auto ed: v[nod]){
            if(dist[ed.first]>dist[nod]+ed.second){
                s.erase({dist[ed.first], ed.first});
                dist[ed.first]=dist[nod]+ed.second;
                s.insert({dist[ed.first],ed.first});
            }
        }
    }
    for(int i=2; i<=n; i++){
        if(dist[i]==inf) fout<<"0 ";
        else fout<<dist[i]<<" ";
    }
    return 0;

}