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#include <fstream>
using namespace std;
int n, v[20];
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int tipar (int k)
{
int i=0;
for (i=1;i<=k;i++) {
fout<<v[i]<<" ";
}
fout<<"\n";
}
void back (int k)
{
int i=0;
for (i=v[k-1]+1;i<=n;i++) {
v[k]=i;
tipar(k);
if (k<n)
back(k+1);
}
}
int main () {
fin>>n;
back(1);
return 0;
}