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#include <fstream>
using namespace std;
ifstream in("combinari.in");
ofstream out("combinari.out");
int s[20],n,k;
void citire(){
in>>n>>k;
}
void generare(){
for(int i=1;i<=k;i++)
s[i]=i;
}
void combinari(int x){
int i;
if(x==k){
for(i=1;i<=k;i++)
out<<s[i]<<" ";
out<<'\n';
}
else{
for(i=s[x]+1;i<=n;i++){
s[x+1]=i;
combinari(x+1);
}
}
}
int main()
{
citire();
generare();
combinari(0);
return 0;
}