Cod sursa(job #2202355)

Utilizator TheGeneralArion Dan TheGeneral Data 8 mai 2018 16:02:50
Problema Algoritmul lui Dijkstra Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.77 kb
#include <bits/stdc++.h>
#define N 100005
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int n,m;
vector <pair<int,int> > v[N];
queue <int> q;
int viz[N];
int dist[N];

void bfs(int s){
    q.push(s);
    viz[s]=1;
    dist[s]=0;
    int x;
    while(!q.empty()){
        x=q.front();
        for(auto i:v[x]){
            if(viz[i.first]==0){
                q.push(i.first);
                viz[i.first]=1;
                dist[i.first]=dist[x]+i.second;
            }
        }
        q.pop();
    }
}
int x,y,c;
int a,b;
int main(){
fin>>n>>m;
for(int i=1;i<=m;i++)
{
    fin>>a>>b>>c;
    v[a].push_back({b,c});
    v[b].push_back({a,c});
}
bfs(1);
for(int i=2;i<=n;i++)
    fout<<dist[i]<<" ";
return 0;
}