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Cod sursa(job #935002)
#include <fstream>
#include <iostream>
#include <vector>
#include <climits>
using namespace std;
struct intpair{int x, y;};
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
vector<pair<int, int> > g[50005];
vector<pair<int, int> >:: iterator it;
intpair a[50005];
int n,m;
int getpozmin(){
int i,mn=INT_MAX,p=1;
for(i=2;i<=n;i++){
if(a[i].x<=mn && a[i].y==0){
mn=a[i].x;
p=i;
}
}
a[p].y=1;
if(mn==INT_MAX)
return 0;
return p;
}
int main()
{
int i,poz=1;
a[1].x=0;
fin>>n>>m;
for(i=2;i<=n;i++){
a[i].x=INT_MAX;
}
for(i=1;i<=m;i++){
int x, y, c;
fin>>x>>y>>c;
g[x].push_back(make_pair(y,c));
}
do{
for(it=g[poz].begin();it!=g[poz].end();it++){
if(it->second+a[poz].x < a[it->first].x){
a[it->first].x=it->second+a[poz].x;
}
}
}while(poz=getpozmin());
for(i=2;i<=n;i++){
fout<<a[i].x<<' ';
}
fin.close();
fout.close();
return 0;
}