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Cod sursa(job #474018)
//100% working
#include<fstream>
#include <vector>
#include <queue>
#define NMAX 50005
#define INF 0x3f3f3f3f
using namespace std;
vector<int> G[NMAX],C[NMAX];
int d[NMAX];
queue<int> Q;
int N;
bool is[NMAX];
void init()
{
int i;
for(i = 1; i <= N; i ++)
d[i] = INF;
d[1]=0;
Q.push(1);
is[1]=1;
}
void citire()
{
int M;
ifstream fin("dijkstra.in");
fin>>N>>M;
int x,y,c;
for(int i=1;i<=M;i++)
{
fin>>x>>y>>c;
G[x].push_back(y);
C[x].push_back(c);
}
fin.close();
}
void afisare()
{
ofstream fout("dijkstra.out");
for(int i=2;i<=N;i++)
if(d[i]==INF) fout<<"0 ";
else
fout<<d[i]<<" ";
fout<<"\n";
fout.close();
}
void bell()
{
int x;
unsigned int i;
while(!Q.empty())
{
x=Q.front();
Q.pop();
is[x]= false;
for(i=0;i< G[x].size();i++)
{
if(d[x]+C[x][i]<d[G[x][i]])
{
d[G[x][i]]=d[x]+C[x][i];
if(is[G[x][i]] == false)
{
Q.push(G[x][i]);
is[G[x][i]]= true;
}
}
}
}
}
int main(int argc,char *argv[])
{
init();
citire();
bell();
afisare();
}