Pagini recente » Cod sursa (job #392542) | Cod sursa (job #2360717) | Cod sursa (job #1173728) | Cod sursa (job #122924) | Cod sursa (job #3313932)
#include<fstream>
#include<vector>
#include<queue>
#include<bitset>
using namespace std;
ifstream cin("dijkstra.in");
ofstream cout("dijkstra.out");
typedef pair<unsigned short,int> P;
vector<P> a[50001];
priority_queue<P,vector<P>,greater<P>> p;
bitset<50001> e;
int d[50001];
int main()
{
unsigned short n;
int m;
for(cin>>n>>m;m--;) {
int i,j,k;
cin>>i>>j>>k,a[i].push_back({j,k});
}
for(int i=2;i<=n;d[i++]=2e9);
for(p.push({0,1});!p.empty();p.pop()) {
int i=p.top().second;
e[i]=1;
for(auto j:a[i])
if(d[j.first]>d[i]+j.second&&(d[j.first]=d[i]+j.second,!e[j.first]))
p.push({d[j.first],j.first});
}
for(int i=2;i<=n;cout<<(d[i]==2e9?0:d[i])<<' ',++i);
return 0;
}