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Cod sursa(job #252461)
#include <stdio.h>
int v[1001], used[1001], n,x[1001][1001],a,b,p,m,s[1001];
void bkt(int k)
{ int i;
if (p==0) return;
else
if(k>n)
{
for(i=1;i<=n;++i)
{
s[i]=v[i];
}
p--;
//if (p==0) return;
}
else
{
for(i=1;i<=n;++i)
{
if(!used[i] && !x[v[k-1]][i])
{
v[k]=i;
used[i]=1;
bkt(k+1);
used[i]=0;
}
}
}
}
int main()
{
int i;
freopen("dusman.in", "r", stdin);
scanf("%d %d %d", &n,&p,&m);
for (i=1;i<=m;++i)
{
scanf("%d %d",&a,&b);
x[a][b]=1;
x[b][a]=1;
}
//p--;
bkt(1);
freopen("dusman.out", "w", stdout);
for(i = 1; i <= n; ++i)
{
printf("%d ", s[i]);
}
printf("\n");
return 0;
}