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#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout ("submultimi.out");
int n,sol[101];
void afis(int k)
{
for (int i=1; i<=k; i++)
fout<<sol[i]<<' ';
fout<<'\n';
}
void back(int k)
{
int i;
if (k<=n)
{
for (i=sol[k-1]+1; i<=n; i++)
{
sol[k]=i;
afis(k);
back(k+1);
}
}
}
int main()
{fin>>n;
back(1);
return 0;
}