Pagini recente » Cod sursa (job #3160543) | Cod sursa (job #36163) | Cod sursa (job #3201753) | Cod sursa (job #2427729) | Cod sursa (job #2430907)
#include <bits/stdc++.h>
#define MAX 50005
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
typedef pair <short,int> pairINT;
int n,Dist[MAX];
bool Used[MAX];
vector <pairINT> Nod[MAX];
priority_queue <pairINT, vector <pairINT>, greater <pairINT>> pQ;
void read();
void dijkastra();
void ans();
int main(){
read();
dijkastra();
ans();
return 0;
}
void dijkastra(){
int i,x,cost;
Used[1]=1;
pQ.push(make_pair(0,1));
while(!pQ.empty()){
cost=pQ.top().first;
x=pQ.top().second;
pQ.pop();
if(Dist[x]<cost)
continue;
for(auto it:Nod[x]){
if(!Used[it.second] || cost+it.first<Dist[it.second]){
Used[it.second]=1;
Dist[it.second]=cost+it.first;
pQ.push(make_pair(Dist[it.second],it.second));
}
}
}
}
void read(){
int i,m,x,y,cost;
fin>>n>>m;
for(i=0;i<m;++i){
fin>>x>>y>>cost;
Nod[x].push_back(make_pair(cost,y));
Nod[y].push_back(make_pair(cost,x));
}
}
void ans(){
int i;
for(i=2;i<=n;++i)
fout<<Dist[i]<<' ';
}