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Cod sursa(job #559930)
using namespace std;
#include<iostream>
#include<fstream>
#include<vector>
#include<queue>
struct nod{
int lg,c;
};
#define nmax 50010
#define pb push_back
#define oo 0x3f3f3f3f
vector<nod> G[nmax];
queue<int> q;
int N,M;
int isinq[nmax],dp[nmax];
ofstream fout("dijkstra.out");
void solve()
{ int i,u;
for(i=0;i<=N;i++)
{
isinq[i]=0;
dp[i]=oo;
}
q.push(1);
dp[1]=0;
isinq[1]=1;
vector<nod>::iterator it;
while(!q.empty())
{
u=q.front();
q.pop();
isinq[u]=0;
for(it=G[u].begin();it<G[u].end();it++)
{
if(dp[it->lg]>dp[u]+it->c)
{
dp[it->lg]=dp[u]+it->c;
if(!isinq[it->lg])
{
q.push(it->lg);
isinq[it->lg]=1;
}
}
}
}
for(i=2;i<=N;i++)
{ if(dp[i]==oo) dp[i]=0;
fout<<dp[i]<<" ";
}
fout<<"\n";
}
void cit()
{
ifstream fin("dijkstra.in");
int i,j,x,y,c;
fin>>N>>M;
for(i=1;i<=M;i++)
{
fin>>x>>y>>c;
G[x].pb((nod){y,c});
}
fin.close();
}
int main()
{
cit();
solve();
fout.close();
return 0;
}