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#include <fstream>
using namespace std;
int v[20];
ifstream fin("combinari.in");
ofstream fout("combinari.out");
void back_tracking(int n, int poz, int k)
{
int i;
if(poz == k + 1)
{
for(i = 1; i <= k; i++)
{
fout << v[i] << " ";
}
fout << endl;
return;
}
for(i = 1; i <= n; i++)
{
if(i > v[poz-1])
{
v[poz] = i;
back_tracking(n, poz + 1, k);
}
}
return;
}
int main()
{
int n, poz = 1, k;
fin >> n >> k;
back_tracking(n, poz, k);
return 0;
}