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#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int N;
int sol[20];
void show(int lim)
{
for (int i = 1; i <= lim; ++i)
fout << sol[i] << ' ';
fout << '\n';
}
void Back(int pos)
{
//if (pos > 1)
// show(pos - 1);
for (int i = sol[pos - 1] + 1; i <= N; ++i)
{
sol[pos] = i;
show(pos);
if (pos < N)
Back(pos + 1);
}
}
int main()
{
fin >> N;
Back(1);
fin.close();
fout.close();
return 0;
}