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#include <fstream>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n, k;
int rez[25];
void afis()
{
for(int i = 1; i <= k; i++)
g << rez[i] << " ";
g << "\n";
}
void backTrack(int ind, int nr)
{
if(nr == k)
afis();
else
{
for(int i = ind + 1; i <= n; i++)
{
rez[nr + 1] = i;
backTrack(i, nr + 1);
rez[nr + 1] = 0;
}
}
}
int main()
{
f >> n >> k;
backTrack(0, 0);
return 0;
}