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Cod sursa(job #709142)
#include<fstream>
using namespace std;
ofstream out("dusman.out");
int x[1001],a[1001][1001],uz[1001],n,m,k;
void back( int );
void citire();
void afis();
int main()
{
citire();
back(1);
return 0;
}
void afis()
{
for(int i=1;i<=n;i++)
out<<x[i]<<" ";
}
void citire()
{
ifstream in("dusman.in");
in>>n>>k>>m;
int i,j;
for(;m;--m)
{
in>>i>>j;
a[i][j]=a[j][i]=1;
}
}
void back(int kk)
{
for(int i=1;i<=n&&k;i++)
if(!uz[i])
{
x[kk]=i;
uz[i]=1;
if(a[x[kk]][x[kk-1]]==0)
if(kk==n)
{
--k;
if(k==0)
afis();
}
else
back(kk+1);
uz[i]=0;
}
}