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#include<fstream>
using namespace std;
int n,nr=-1;
int st[22];
ifstream fin("submultimi.in");
ifstream fout("submultimi.out");
void back()
{
int i;
for(i=1;i<=st[0];i++)
fout << st[i];
if(st[0])
fout << '\n';
for(i=st[st[0]]+1;i<=n;i++)
{
st[++st[0]]=i;
back();
st[st[0]]=0;
st[0]--;
}
}
int main()
{
///ifstream fin("submultimi.in");
///ifstream fout("submultimi.out");
fin >> n;
back();
return 0;
}