Pagini recente » Istoria paginii runda/simulare-cartita-52b/clasament | Cod sursa (job #2094104) | Cod sursa (job #1684409) | Cod sursa (job #341008) | Cod sursa (job #2812238)
#include <iostream>
#include <fstream>
#include <queue>
#include <vector>
#include<climits>
using namespace std;
ifstream f ("dijkstra.in");
ofstream g ("dijkstra.out");
int n,m,x,y,c;
vector<pair<int,int>>adiacenta[50001];
int costuri[50001];
priority_queue<pair<int,int>, vector<pair<int,int>>, greater<pair<int,int>>> q;
void citire()
{
f >> n >> m;
for(int i = 1;i<=m;i++)
{
f >> x >> y >> c;
adiacenta[x].push_back({y,c});
}
for(int i = 1;i<=n;i++)
costuri[i] = INT_MAX;
}
void alg()
{
costuri[1] = 1;
q.push({1,1});
while(!q.empty())
{
int nod = q.top().second;
int cost = q.top().first;
q.pop();
for(auto x:adiacenta[nod])
{
if(costuri[x.first]>costuri[x.second]+cost)
{
costuri[x.first]=costuri[x.second]+cost;
q.push({costuri[x.first],x.first});
}
}
}
}
void afisare()
{
for(int i = 2;i<=n;i++)
g << costuri[i]-1<< " ";
}
int main()
{
citire();
alg();
afisare();
}