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Cod sursa(job #237170)
#include <stdio.h>
#include <stdlib.h>
int a[1005][1005],uz[1005],sol[1005];
int n,k,m;
void print ()
{
int i;
for (i=1; i<=n; ++i)
printf ("%d ",sol[i]);
exit (0);
}
void back (int val)
{
int i;
if (val==n+1)
{
--k;
if (k==0)
print ();
}
else
for (i=1; i<=n; ++i)
if (!uz[i] && !a[sol[val-1]][i])
{
sol[val]=i;
uz[i]=1;
back (val+1);
uz[i]=0;
}
}
int main ()
{
freopen ("dusman.in","r",stdin);
freopen ("dusman.out","w",stdout);
int i,x,y;
scanf ("%d%d%d",&n,&k,&m);
for (i=1; i<=m; ++i)
{
scanf ("%d%d",&x,&y);
a[x][y]=1;
a[y][x]=1;
}
back (1);
return 0;
}