Pagini recente » Cod sursa (job #1580745) | Cod sursa (job #1517792) | Cod sursa (job #2309852) | Cod sursa (job #2052800) | Cod sursa (job #1415719)
#include <fstream>
#include <cstring>
#include <vector>
#include <set>
#define DIM 50100
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
int N,M;
vector < pair<int,int> > v[DIM];
set <pair <int,int > > T;
int D[DIM];
int main(){
fin>>N>>M;
while(M--){
int x,y,cost;
fin>>x>>y>>cost;
v[x].push_back(make_pair(y,cost));
}
memset(D,0x3f3f3f3f,sizeof(D));
D[1]=0;
T.insert(make_pair(0,1));
while(T.size()>0){
int val=(*T.begin()).first;
int x=(*T.begin()).second;
T.erase(*T.begin());
for(std::vector < pair <int,int> >::iterator it=v[x].begin();it!=v[x].end();it++)
if(D[it->first]>val+it->second){
D[it->first]=val+it->second;
T.insert(make_pair(D[it->first],it->first));
}
}
for(int i=2;i<=N;i++)
if(D[i]==0x3f3f3f3f)
fout<<"0 ";
else
fout<<D[i]<<" ";
fin.close();fout.close();
return 0;
}