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Cod sursa(job #283177)
#include <stdio.h>
#define dim 50100
struct nod
{
int nr, c;
nod *urm;
};
int n, m, d[dim], inq[dim];
nod *prim[dim];
void add(nod *&p, int nr, int c)
{
nod *n1=new nod;
n1->nr=nr;
n1->c=c;
n1->urm=p;
p=n1;
}
void bellmanford()
{
int c[dim], st, dr, nd, i;
nod *cur;
for (i=1; i<=n; i++) d[i]=1<<30, inq[i]=0;
c[0]=1;
d[1]=0;
inq[1]=1;
st=dr=0;
while (st<=dr)
{
nd=c[st];
st++;
cur=prim[nd];
while (cur)
{
if (d[cur->nr]>d[nd]+cur->c)
{
d[cur->nr]=d[nd]+cur->c;
if (!inq[cur->nr])
{
c[++dr]=cur->nr;
inq[cur->nr]=1;
}
}
cur=cur->urm;
}
}
}
int main()
{
int a, b, c, i;
freopen("dijkstra.in", "r", stdin);
freopen("dijkstra.out", "w", stdout);
scanf("%d %d\n", &n, &m);
for (i=1; i<=m; i++)
{
scanf("%d %d %d\n", &a, &b, &c);
add(prim[a], b, c);
}
bellmanford();
for (i=2; i<=n; i++) printf("%d ", d[i]);
return 0;
}