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#include<fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int x[20],n,m;
void afis(int p)
{
int i;
for(i=1; i<=p; i++)
fout<<x[i]<<" ";
fout<<'\n';
}
void bk(int p)
{
int i;
for(i=x[p-1]+1; i<=n; i++)
{
x[p]=i;
afis(p);
bk(p+1);
}
}
int main()
{
fin>>n;
bk(1);
fin.close();
fout.close();
return 0;
}