Pagini recente » Cod sursa (job #3203143) | Rezultatele filtrării | Cod sursa (job #1045733) | Cod sursa (job #1395906) | Cod sursa (job #2460701)
#include <bits/stdc++.h>
#define pii pair <int,int>
#define INF 0x3f3f3f3f
using namespace std;
ifstream fin("dijkstra.in");
ofstream fout("dijkstra.out");
struct str{
int nod,cost;
bool operator < (const str&other) const
{
return cost>other.cost;
}
};
int n,m,drum[50005];
vector <pii> v[50005];
priority_queue <str> q;
void dijkstra()
{
while(!q.empty())
{
int nod=q.top().nod;
int cost=q.top().cost;
q.pop();
for(auto it=v[nod].begin();it<v[nod].end();it++)
{
int nxt=(*it).first;
int cst=(*it).second;
if(drum[nxt]>drum[nod]+cst)
{
drum[nxt]=drum[nod]+cst;
q.push({nxt,drum[nxt]});
}
}
}
}
int main()
{
fin>>n>>m;
memset(drum,INF,sizeof(drum));
for(int i=1;i<=n;i++)
{
int x,y,z;
fin>>x>>y>>z;
v[x].push_back({y,z});
}
drum[1]=0;
q.push({1,0});
dijkstra();
for(int i=2;i<=n;i++)
{
if(drum[i]==INF)
fout<<0<<" ";
else
fout<<drum[i]<<" ";
}
return 0;
}