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#include <iostream>
#include <fstream>
using namespace std;
fstream f ("combinari.in");///fisieru ii submultimi
ofstream g ("combinari.out");
int x[1000],n,p;
void afis(int k)
{
for(int i=1;i<=k;i++)
g<<x[i]<<' ';
g<<"\n";
}
void back(int k)
{
for(int i=x[k-1]+1;i<=n;i++)
{
x[k] = i;
if(k==p)
afis(k);
back(k+1);
}
}
int main()
{
x[0] = 0;
f>>n>>p;
back(1);
return 0;
}