Pagini recente » Profil NicuCJ | Profil ikogames | Clasament Grigore Moisil 2011, clasa a 9-a | Istoria paginii utilizator/unibuc_manghiuc_burcea_petrasco | Cod sursa (job #3205364)
#include <bits/stdc++.h>
#define INF 1 << 30
#define NMAX 50001
using namespace std;
ifstream f ("dijkstra.in");
ofstream g ("dijkstra.out");
int n, m;
vector< pair<int, long long> > vecini[NMAX];
vector<long long> cost;
queue<int> q;
void initCost(){
cost = vector<long long>(n + 1, INF);
}
void bf(int nod){
cost[nod] = 0;
q.push(nod);
while(!q.empty()){
int k = q.front();
q.pop();
for(auto vecin : vecini[k])
if(cost[vecin.first] > cost[k] + vecin.second){
cost[vecin.first] = cost[k] + vecin.second;
q.push(vecin.first);
}
}
}
int main()
{
int x, y, c;
f >> n >> m;
for(int i = 1; i <= m; i ++){
f >> x >> y >> c;
vecini[x].push_back(make_pair(y, c));
}
initCost();
bf(1);
for(int i = 2; i <= n; i ++)
if(cost[i] == INF) cost[i] = 0;
for(int i = 2; i <= n; i ++)
g << cost[i] << " ";
return 0;
}