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Cod sursa(job #736006)
#include <fstream>
#include <bitset>
#include <cstdlib>
using namespace std;
const int N=1005;
bitset<N> bad[N];
int sol[N],n,k;
bool use[N];
ifstream in("dusman.in");
ofstream out("dusman.out");
void print()
{
for (int i=1;i<=n;i++)
out<<sol[i]<<" ";
out<<"\n";
}
void check()
{
--k;
if (!k)
{
print();
exit(0);
}
}
void bkt(int p)
{
if (p==n+1)
{
check();
return;
}
for (int i=1;i<=n;i++)
if (!use[i] && !bad[sol[p-1]][i])
{
use[i]=true;
sol[p]=i;
bkt(p+1);
use[i]=false;
}
}
int main()
{
int m,x,y;
in>>n>>k>>m;
while (m--)
{
in>>x>>y;
bad[x][y]=bad[y][x]=true;
}
bkt(1);
return 0;
}