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Cod sursa(job #501418)
#include<fstream>
#include<cmath>
#include<vector>
#include<queue>
#define dmax 1510
#define inf 999999
#define EPS 1e-15
using namespace std;
int n,m;
vector<int> a[dmax], c[dmax];
double d[dmax];
int nrdr[dmax];
queue<int> q;
void citire()
{
int i,x,y,z;
ifstream fin("dmin.in");
fin>>n>>m;
for (i=1; i<=m; i++)
{
fin>>x>>y>>z;
a[x].push_back(y); c[x].push_back(z);
a[y].push_back(x); c[y].push_back(z);
}
fin.close();
}
void solve()
{
int i,elem;
double log1,log2,log3;
for (i=2; i<=n; i++)
d[i]=inf;
d[1]=0; nrdr[1]=1;
q.push(1);
while (q.size())
{
elem=q.front();
for (i=0; i<a[elem].size(); i++)
{
log1=d[a[elem][i]];
log2=d[elem];
log3=log ((double)c[elem][i]);
/*if (d[a[elem][i]] > d[elem] * c[elem][i])*/
if (log1 - (log2 + log3) > EPS)
{
/*d[a[elem][i]] = d[elem] * c[elem][i];*/
d[a[elem][i]] = log2 + log3;
nrdr[a[elem][i]] = nrdr[elem];
q.push(a[elem][i]);
} else
/*if (d[a[elem][i]] == d[elem] * c[elem][i])*/
if (abs(log1 - (log2 + log3)) <= EPS)
nrdr[a[elem][i]] += nrdr[elem];
}
q.pop();
}
}
void afisare()
{
int i;
ofstream fout("dmin.out");
for (i=2; i<=n; i++)
fout<<nrdr[i]<<" ";
fout.close();
}
int main()
{
citire();
solve();
afisare();
return 0;
}