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#include <fstream>
using namespace std;
int stiva[19], n, k;
ofstream fout("combinari.out");
void afiseaza()
{
for(int i=1; i<=k; ++i)
fout << stiva[i] << ' ';
fout << '\n';
}
void backtrack(int j)
{
for(int i=stiva[j-1]+1; i<=n; i++)
{
stiva[j] = i;
if(j==k)
afiseaza();
else
backtrack(j+1);
}
}
int main()
{
ifstream fin("combinari.in");
fin >> n >> k;
backtrack(1);
return 0;
}