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