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Cod sursa(job #885492)
#include<fstream>
#include<iostream>
using namespace std;
const int maxn = 50001;
const int inf = 1 << 30;
ifstream f("dijkstra.in");
ofstream g("dijkstra.out");
struct graf
{
int nod, cost;
graf *next;
};
int n, m;
graf *a[maxn];
int d[maxn], q[maxn];
void add(int unde, int ce, int cost)
{
graf *q = new graf;
q->nod = ce;
q->cost = cost;
q->next = a[unde];
a[unde] = q;
}
void read()
{
f>>n>>m;
int x, y, z;
for ( int i = 1; i <= m; ++i )
{
f>>x>>y>>z;
add(x, y, z);
}
}
void dijkstra()
{
for ( int i = 2; i <= n; ++i )
d[i] = inf;
int min, pmin = 0;
for ( int i = 1; i <= n; i++ )
{
min = inf;
for ( int j = 1; j <= n; ++j )
if ( d[j] < min && q[j]==0 )
min = d[j], pmin = j;
q[pmin] = 1;
graf *t = a[pmin];
while ( t )
{
if ( d[ t->nod ] > d[pmin] + t->cost )
d[ t->nod ] = d[pmin] + t->cost;
t = t->next;
}
}
}
int main()
{
read();
dijkstra();
for ( int i = 2; i <= n; ++i )
if(d[i]!=inf)
g<<d[i]<<" ";
return 0;
}