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#include <fstream>
#include <algorithm>
using namespace std;
ifstream f("combinari.in");
ofstream g("combinari.out");
int n,k,c[20];
void back(int);
int main()
{
f>>n>>k;
back(1);
return 0;
}
void back(int i)
{
int j;
if(i==k+1)
{
for(j=1;j<=k;j++)
g<<c[j]<<' ';
g<<'\n';
return;
}
for(j=c[i-1]+1;j<=n-k+i;j++)
{
c[i]=j;
back(i+1);
}
}