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#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n;
int x[20];
bool s[20];
void Back(int k);
void Write(int k);
int main()
{
fin >> n;
Back(1);
fin.close();
fout.close();
return 0;
}
void Back(int k)
{
if ( k > n )
return;
for (int i = x[k-1] + 1; i <= n; ++i )
{
x[k]= i;
Write(k);
Back(k + 1);
}
}
void Write(int k)
{
for ( int i = 1; i <= k; ++i )
fout << x[i] <<' ';
fout << '\n';
}