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#include <fstream>
using namespace std;
int n,k,v[20],v2[20];
ifstream f("combinari.in");
ofstream g("combinari.out");
void bkt(int poz,int last)
{
if(poz==k+1)
{
for(int i=1;i<=k;i++)
{
g<<v2[i]<<" ";
}
g<<'\n';
}
else
{
for(int i=last;i<=n;i++)
{
if(!v[i])
{
v[i]=1;
v2[poz]=i;
bkt(poz+1,i+1);
v2[poz]=0;
v[i]=0;
}
}
}
}
int main()
{
f>>n>>k;
bkt(1,1);
return 0;
}